2wd tire size...what size effects the truck in what way?

npor · 10-01-2007, 12:28 AM

okay...yeah, another 2wd post

i searched, but didn't find anything. i gotsome error most of the time.

anyway, since i've got a 2.2L, i know it's not the most powerful motor in the world, and i was wondering what tire size would affect the truck in the aspect of power/speed

how much slower would each tire make the truck?

i guess going from 28-32" tires...

if anybody can understand that post, it's kinda hazy. haha.

JMew03 · 10-01-2007, 12:45 AM

well the bigger the tire the slower the truck is going to be

npor · 10-01-2007, 12:50 AM

Quote: Originally Posted by JMew03

well the bigger the tire the slower the truck is going to be

of course.
but i mean like...
"
28" tire - not noticible
29" tire - barely noticible"

ect ect..if anybody knows, because i sure as hell don't.

it's also good material for future 2wd lifters

JMew03 · 10-01-2007, 12:55 AM

depends what gears you have..

crazy91s10 · 10-01-2007, 01:10 AM

no matter what... if you go with a bigger tire than stock you'll notice a difference.. esp with a 2.2

it all depends on what gears you have like jmew said...

most likely if you go with a 30" tire or bigger you'll def need to regear if you want your gas mileage back. ask bobbys10man, jmew, or muddubber about using bigger tires and dif gears on a 2wd

npor · 10-01-2007, 01:22 AM

Quote: Originally Posted by crazy91s10

no matter what... if you go with a bigger tire than stock you'll notice a difference.. esp with a 2.2

it all depends on what gears you have like jmew said...

most likely if you go with a 30" tire or bigger you'll def need to regear if you want your gas mileage back. ask bobbys10man, jmew, or muddubber about using bigger tires and dif gears on a 2wd

dang..i was wanting to fit 31"s too...

i hope one of them chime in

bobbys10man · 10-01-2007, 01:31 AM

I do have 31" tires with 3.73 gears (stock) use your RPO codes in your glove box to see what gears you have. My truck will run just fine with the stock gears going down the interstate as long as your on flat road or going down hill and there is not a strong wind LOL... So what I am saying if your mostly in town and every once in a great while you drive on the interstate then you will be fine with stock gears, if you drive on the interstate a lot then you are going to notice it being pretty slow... I can drive 70 but as soon as I hit a head wind or any kind of hill I am doing good to keep it at 60... As far as gas milage, it is not great and not horrible either... I have a 16 gallon tank and I fill up as soon as the low fuel light comes on and I can get about 275-315 miles per tank...

crazy91s10 · 10-01-2007, 01:59 AM

and there ya have it...

Rinkrat456 · 10-01-2007, 04:27 AM

A 4wd truck should be just as conscious about gears and tire size as a 2wd. The main factor in this thread is his 2.2L.

If you want 30's or 31's, swap in a set of 4.56's. The tu-tu likes to rev and doesn't deal well with a load placed on it (lack of torque) so you'll need all the torque multiplication you can get at the tires. Running 4.56's with a 2.2L 4 cylinder is the same as running a Vortec 4.3 V6 with a 2.45 ring and pinion gear.

Same amount of torque to the wheels.

crazy91s10 · 10-01-2007, 06:12 PM

Quote: Originally Posted by Rinkrat456

Running 4.56's with a 2.2L 4 cylinder is the same as running a Vortec 4.3 V6 with a 2.45 ring and pinion gear. Same amount of torque to the wheels.

wow... the 2.2s really lack that much torque

. remind me never to buy a 2.2

GeorgesBlazah · 10-01-2007, 06:14 PM

25mpg in my 2.2 woo!

Rinkrat456 · 10-01-2007, 06:52 PM

Quote: Originally Posted by GeorgesBlazah

25mpg in my 2.2 woo!

My sis gets that with her 4.8L V8 ZR5. Wohoo!

zaathur151 · 10-01-2007, 08:11 PM

shit the new corvette z06 hurd they get 22+ on the highway with that 427 7.0L motor they have

Rinkrat456 · 10-01-2007, 08:59 PM

Quote: Originally Posted by zaathur151

shit the new corvette z06 hurd they get 22+ on the highway with that 427 7.0L motor they have

You can thank the 6th gear .50:1 for that. Otherwise as a daily driver, reports have been coming in with the fuel economy read out stuck at 15mpg with the LS7.

npor · 10-01-2007, 09:56 PM

Quote: Originally Posted by Rinkrat456

You can thank the 6th gear .50:1 for that. Otherwise as a daily driver, reports have been coming in with the fuel economy read out stuck at 15mpg with the LS7.

our 06' C6 gets around 15MPG with the LS6, 6spd auto tranny *thumbs down*

anyway, back on topic.

i've got stock gears...as far as i know anyway, i'm sure nobody has messed with them. just how hard is it to change out a set of rear gears?

crazy91s10 · 10-01-2007, 10:02 PM

Quote: Originally Posted by npor

our 06' C6 gets around 15MPG with the LS6, 6spd auto tranny *thumbs down*

anyway, back on topic.

i've got stock gears...as far as i know anyway, i'm sure nobody has messed with them. just how hard is it to change out a set of rear gears?

if you plan to go with a conventional gm gear like 3.73, 4.10, and i think 4.56 then it'd be easier to just find a complete rear with those gears from a junkyard s10... although im not sure how common 4.56s really are in stock s-series trucks.

if you go with a somewhat uncommon gearing then you'll have to purchase a gear set. if you end up purchasing a gear set then it'd probably be in your best interest to have a professional set them up for you. rink can elaborate on that but its a very tedious procedure that doesnt allow for error. it also involves some special tools to measure backlash etc..

npor · 10-01-2007, 10:09 PM

Quote: Originally Posted by crazy91s10

if you plan to go with a conventional gm gear like 3.73, 4.10, and i think 4.56 then it'd be easier to just find a complete rear with those gears from a junkyard s10... although im not sure how common 4.56s really are in stock s-series trucks.

if you go with a somewhat uncommon gearing then you'll have to purchase a gear set. if you end up purchasing a gear set then it'd probably be in your best interest to have a professional set them up for you. rink can elaborate on that but its a very tedious procedure that doesnt allow for error. it also involves some special tools to measure backlash etc..

so, swapping the entire axle would be a better bet.

that sounds alot easier than opening that transfercase up, and sticking my hands inside. haha.

4.56's...what numbers would i be looking for in the glovebox? i'm sure it's in a thread somewhere around here, so i'll search in a second. ha.
also, when i do purchase the entire axle, 1 what all would i need to get with the axle? any other parts from the truck, and would it be a bad idea to put the axle in with everything else still being stock? would i see any...bad things by putting the axle in there just like my truck is now?

or any improvements?

bobbys10man · 10-01-2007, 11:12 PM

Quote: Originally Posted by npor

so, swapping the entire axle would be a better bet.

that sounds alot easier than opening that transfercase up, and sticking my hands inside. haha.

4.56's...what numbers would i be looking for in the glovebox? i'm sure it's in a thread somewhere around here, so i'll search in a second. ha.
also, when i do purchase the entire axle, 1 what all would i need to get with the axle? any other parts from the truck, and would it be a bad idea to put the axle in with everything else still being stock? would i see any...bad things by putting the axle in there just like my truck is now?

or any improvements?

there is no transfer case in your truck thats only for four wheel frive trucks... all you would need is just the rear end... I think G80 code in the glove box is a "posi" rear end

npor · 10-01-2007, 11:33 PM

Quote: Originally Posted by bobbys10man

there is no transfer case in your truck thats only for four wheel frive trucks... all you would need is just the rear end... I think G80 code in the glove box is a "posi" rear end

errr...not transfercase....

yeah...didn't mean transfercase...

uhhh...

thanks

crazy91s10 · 10-01-2007, 11:37 PM

Quote: Originally Posted by bobbys10man

there is no transfer case in your truck thats only for four wheel frive trucks... all you would need is just the rear end... I think G80 code in the glove box is a "posi" rear end

yes to what bobby said... just to add to what he said. the "g80" code will accompany the actual gear ratio code. look around for gm gear codes... i'm too lazy to copy/paste them into here. an example of what you'll see on the glove box sticker: "GU6 G80" which translates to: 3.42 posi

and as to using 4.56 gears... its gunna be tough to find them in a junkyard s10. like i said before, i'm not even sure how common that gear ration is in a stock truck and i've never actually come across a 4.56 rear in any junkyard that i've been to. most common ratios that you will find in a junkyard will be 3.08, 3.42, 3.73, and 4.10. any lower (numerically higher) and you'll most likely end up having to purchase a new gearset and have them installed in your existing rear axle.

and to answer your other question... it will not hurt anything by putting different gears in your truck. whether you swap out the entire axle or you have new gears installed there will be no adverse affects. only minor thing that may change is your speedo reeding will be off. depending on what gears you choose and what size tire you run, your speedo will either be reading too slow or two fast or may not be off at all. just depends on the tire/gear combo you use. if your truck is a second gen i believe a dealer can recalibrate your speedo if necessary. if its a firstgen then you'll just have to know how much the speedo is off and drive accordingly.

Rinkrat456 · 10-01-2007, 11:49 PM

I mean this in the most respectful way possible, if anyone on here asks what all is involved with a gear change, they're better off taking it to the shop. I do the same thing with my welding. I can spot weld all day long but when it comes to strength and structural welds I know my limitations and have no problem taking my welding projects to a professional. Same goes with a gear change.

Call around your area looking for a driveline shop, or more specifically a clutch, U-joint, driveshaft type of shop, and ask them what it would cost for you to bring the entire rear axle assembly to them to have the gears changed. Order the ring and pinion set, along with the master intallation kit THROUGH THE SHOP, so labor will be cheaper. Nothing pisses a place off more than you bringing aftermarket gears and the install kit to the place just to have it done. If you're looking to save money, read up on how it's done, and do it yourself on a spare junkyard axle that you can practice with. No, it wont save you money the first go-around. But you'll have a great foundation of knowledge for doing gear changes later on.

1st time though, have a shop do it for you and watch the laborer while he works. Ask questions, be specific, write down everything. The first time I had my 3.42's swapped out for 4.10's, I paid right around $400 or so for the 7.625". Next time around after that axle took a shit, I did it myself again on a different "new" rear, swapping out the 3.08's for 3.73's, same truck. No common S-truck came out with 4.56's. There were a few in the olden days when the Isuzu Hombre came out with the diesel 2.2, but that was the 7.5" many years ago, only offered in Mexico. I think there is one more exception in 1st gens that I'm forgetting, but the gist of it is, the 4.56's are so rare your best bet is to go straight to the top with 4.56's and have a shop do it for you. If you're looking for a G80 Eaton Gov-Lok, send me a PM, I have one in decent condition with only 36k miles on the 7.625".

You can find 4.10's pretty easily in extended cab 2.2L trucks, but you're still limited to a 31" tire, and even then you'll feel the drag. Like I said earlier, a 2.2L does not do well against a load like a V6 will. The tu-tu was made solely to impress the Greeny's looking for a fuel efficient daily driver truck.

npor · 10-02-2007, 04:17 PM

Quote: Originally Posted by Rinkrat456

I mean this in the most respectful way possible, if anyone on here asks what all is involved with a gear change, they're better off taking it to the shop. I do the same thing with my welding. I can spot weld all day long but when it comes to strength and structural welds I know my limitations and have no problem taking my welding projects to a professional. Same goes with a gear change.

Call around your area looking for a driveline shop, or more specifically a clutch, U-joint, driveshaft type of shop, and ask them what it would cost for you to bring the entire rear axle assembly to them to have the gears changed. Order the ring and pinion set, along with the master intallation kit THROUGH THE SHOP, so labor will be cheaper. Nothing pisses a place off more than you bringing aftermarket gears and the install kit to the place just to have it done. If you're looking to save money, read up on how it's done, and do it yourself on a spare junkyard axle that you can practice with. No, it wont save you money the first go-around. But you'll have a great foundation of knowledge for doing gear changes later on.

1st time though, have a shop do it for you and watch the laborer while he works. Ask questions, be specific, write down everything. The first time I had my 3.42's swapped out for 4.10's, I paid right around $400 or so for the 7.625". Next time around after that axle took a shit, I did it myself again on a different "new" rear, swapping out the 3.08's for 3.73's, same truck. No common S-truck came out with 4.56's. There were a few in the olden days when the Isuzu Hombre came out with the diesel 2.2, but that was the 7.5" many years ago, only offered in Mexico. I think there is one more exception in 1st gens that I'm forgetting, but the gist of it is, the 4.56's are so rare your best bet is to go straight to the top with 4.56's and have a shop do it for you. If you're looking for a G80 Eaton Gov-Lok, send me a PM, I have one in decent condition with only 36k miles on the 7.625".

You can find 4.10's pretty easily in extended cab 2.2L trucks, but you're still limited to a 31" tire, and even then you'll feel the drag. Like I said earlier, a 2.2L does not do well against a load like a V6 will. The tu-tu was made solely to impress the Greeny's looking for a fuel efficient daily driver truck.

oh yes, there was no way i was going to complete this on my own.

i've taken a simple obx LSD apart for a 90-93 accord and reassembeled it using a writeup on honda-tech, but that's as far as i've been. and it performed very nicely afterwards

i haven't searched much...because i'm not sure as to what i'd be searching for, but i'm still in the learning stage right now, i want to learn as much as i can before i do anything to this truck. you said you've got an G80 Eaton Gov-Lok, and you said it was on a 7.625" what is this 7.625?

like i said, if theres a thread where this is covered please direct me towards it, i'm all for learning

crazy91s10 · 10-02-2007, 05:21 PM

the 7.625" rears started showing up in the last few years of firstgen production and they continued to use them in the s10s till the production of the s10 was ended.

the earlier 7.5" rear showed up only in the firstgens and they stopped using them somewhere in the very late 80s or very early 90s. not exactly sure when they stopped using the 7.5" rears... all i know is that my 93 came with a 7.625 rear in it.

so basically depends what year your truck is

Rinkrat456 · 10-02-2007, 07:14 PM

It's the rear end in your truck. The 7.625" measurement is the diameter of the ring gear. The strength of a rear end is not directly proportional to the diameter of the ring gear, but the larger it is, the stronger the rear will be.

npor · 10-03-2007, 12:00 AM

sweet

now onto wheels...i want that wide stance aswell.

i read on another thread, that with a 4" backspacing, the tire will stick out roughly 1 inch.

what was not covered in that thread, was the 2wd/4wd thing.

is that on a 2wd, or a 4wd?

basically what i'm looking at is a 2"BL thats coming in the near future, but i'm still unclear on what type of a tire i'll be able to fit under my 2wd sonoma.

xxx/xx/xx
back onto the wheels, i want something along the lines of this

i'm assuming i should just keep it at 15" wheels, but what should they be? 15xwhat?

npor · 10-04-2007, 01:35 AM

bump for an answer?

i searched, but i must of been searching with the wrong key words...nothings come up that has helped me very much

Rinkrat456 · 10-04-2007, 02:26 AM

On a 2wd Sonoma, a 2" body lift allows 30x9.50R15's all the way around with slight rubbing of the frame. Rims with 4" of backspacing on a 2wd, keep it stock. If possible, use your rims with 1.25-1.5" bolt on billet aluminum spacers. The cost of the spacers will be less than the cost of new rims by half, and will actually allow you to run up to a 31x10.50R15 with the same amount of rubbing as a 30x9.50 without spacers. Still given a 2" body lift.

2" body lift.
Stock rims.
30x9.50 with slight rubbing of the frame

2" body lift
Stock rims
Bolt on 1.25-1.5" spacers
31x10.50R15

With a 2.2L, I'd stick to 4.10 gears and 30x9.50's if this is your daily, 4.56's if this is an off-road truck.

npor · 10-04-2007, 04:34 PM

now...when you're talking about the rubbing, i'm assuming "full lock" is the correct terminology, (when i've turned my wheel all the way to the left/right, or my suspension has maxed itself out?) i'll rub my frame at full lock?

also, i highly doubt i'll be changing the gears any time soon, i just went and checked in my glovebox and i saw a GT4, which according to the information that i found when i searched, means i've got 3.73 gears.

so, as of now, i think my plan is to go with

2"body lift
stock rims
30x9.50
bolt on 1.25-1.5" spacers

and all of that is on the stock 3.73 gears, on my DD.

i know the 4.10's multiply torque more than the 3.73's do, but would it be a smart idea to run that setup on 3.73 gears?

bobbys10man · 10-04-2007, 05:39 PM

I run a 5" lift with 31x10.5's with no spacers with a 2.2 and 3.73 gears and its my daily... I have not had any problems really... Its a little slow on the interstate though

npor · 10-04-2007, 05:56 PM

and the 5" suspension lift puts more strain on the motor..am i correct?

if that's the case, then i'm guessing that the setup i've put together (With help from you guys, haha) will work with minimal problems (as far as MPH, and acceleration)

bobbys10man · 10-05-2007, 07:14 AM

I'd say the tire size puts the strain on the motor more than the lift height...

melon16 · 10-05-2007, 07:21 AM

wow theres someone else on the forum at 6 in the morning haha---anyways I am running tires 5" taller than stock with roughly 4 inches of lift with a v6

i also had the stock tires with just the lift and my city mpg was the same until i put the tires on---hwy mpg dropped maybe 1mpg.

my tires however dropped me from about 18-19mpg down to 15. really not a huge difference but i'd bet that the 2.2 would struggle a lot more and thus have a bigger drop in mpg.....

just slap them on and see what happens! (gas is expensive--you might as well use it haha)

10-01-2007, 12:28 AM	#1
npor Registered User Age: 20 Join Date: Aug 2007 Posts: 264 Location: User is: OffLine	2wd tire size...what size effects the truck in what way? okay...yeah, another 2wd post i searched, but didn't find anything. i gotsome error most of the time. anyway, since i've got a 2.2L, i know it's not the most powerful motor in the world, and i was wondering what tire size would affect the truck in the aspect of power/speed how much slower would each tire make the truck? i guess going from 28-32" tires... if anybody can understand that post, it's kinda hazy. haha.
	[Reply w/Quote]

10-01-2007, 12:45 AM	#2
JMew03 bodydropped on 22s! Age: 25 Join Date: Aug 2003 Posts: 10,214 Location: DFW, TX User is: OffLine	Re: 2wd tire size...what size effects the truck in what way? well the bigger the tire the slower the truck is going to be
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10-01-2007, 12:50 AM	#3
npor Registered User Age: 20 Join Date: Aug 2007 Posts: 264 Location: User is: OffLine	Re: 2wd tire size...what size effects the truck in what way? Quote: Originally Posted by JMew03 well the bigger the tire the slower the truck is going to be of course. but i mean like... " 28" tire - not noticible 29" tire - barely noticible" ect ect..if anybody knows, because i sure as hell don't. it's also good material for future 2wd lifters
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10-01-2007, 12:55 AM	#4
JMew03 bodydropped on 22s! Age: 25 Join Date: Aug 2003 Posts: 10,214 Location: DFW, TX User is: OffLine	Re: 2wd tire size...what size effects the truck in what way? depends what gears you have..
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10-01-2007, 01:10 AM	#5
crazy91s10 Registered Asshole Age: 24 Join Date: Oct 2004 Posts: 4,102 Location: Moscow, PA / Mansfield, PA User is: OffLine	Re: 2wd tire size...what size effects the truck in what way? no matter what... if you go with a bigger tire than stock you'll notice a difference.. esp with a 2.2 it all depends on what gears you have like jmew said... most likely if you go with a 30" tire or bigger you'll def need to regear if you want your gas mileage back. ask bobbys10man, jmew, or muddubber about using bigger tires and dif gears on a 2wd
	[Reply w/Quote]

10-01-2007, 01:22 AM	#6
npor Registered User Age: 20 Join Date: Aug 2007 Posts: 264 Location: User is: OffLine	Re: 2wd tire size...what size effects the truck in what way? Quote: Originally Posted by crazy91s10 no matter what... if you go with a bigger tire than stock you'll notice a difference.. esp with a 2.2 it all depends on what gears you have like jmew said... most likely if you go with a 30" tire or bigger you'll def need to regear if you want your gas mileage back. ask bobbys10man, jmew, or muddubber about using bigger tires and dif gears on a 2wd dang..i was wanting to fit 31"s too... i hope one of them chime in
	[Reply w/Quote]

10-01-2007, 01:31 AM	#7
bobbys10man Registered Dreamer Age: 26 Join Date: Nov 2005 Posts: 546 Location: Lafayette, IN User is: OffLine	Re: 2wd tire size...what size effects the truck in what way? I do have 31" tires with 3.73 gears (stock) use your RPO codes in your glove box to see what gears you have. My truck will run just fine with the stock gears going down the interstate as long as your on flat road or going down hill and there is not a strong wind LOL... So what I am saying if your mostly in town and every once in a great while you drive on the interstate then you will be fine with stock gears, if you drive on the interstate a lot then you are going to notice it being pretty slow... I can drive 70 but as soon as I hit a head wind or any kind of hill I am doing good to keep it at 60... As far as gas milage, it is not great and not horrible either... I have a 16 gallon tank and I fill up as soon as the low fuel light comes on and I can get about 275-315 miles per tank...
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10-01-2007, 01:59 AM	#8
crazy91s10 Registered Asshole Age: 24 Join Date: Oct 2004 Posts: 4,102 Location: Moscow, PA / Mansfield, PA User is: OffLine	Re: 2wd tire size...what size effects the truck in what way? and there ya have it...
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10-01-2007, 04:27 AM	#9
Rinkrat456 Lifted Member Join Date: Sep 2006 Posts: 986 Location: Woodbury, MN User is: OffLine	Re: 2wd tire size...what size effects the truck in what way? A 4wd truck should be just as conscious about gears and tire size as a 2wd. The main factor in this thread is his 2.2L. If you want 30's or 31's, swap in a set of 4.56's. The tu-tu likes to rev and doesn't deal well with a load placed on it (lack of torque) so you'll need all the torque multiplication you can get at the tires. Running 4.56's with a 2.2L 4 cylinder is the same as running a Vortec 4.3 V6 with a 2.45 ring and pinion gear. Same amount of torque to the wheels.
	[Reply w/Quote]

10-01-2007, 06:12 PM	#10
crazy91s10 Registered Asshole Age: 24 Join Date: Oct 2004 Posts: 4,102 Location: Moscow, PA / Mansfield, PA User is: OffLine	Re: 2wd tire size...what size effects the truck in what way? Quote: Originally Posted by Rinkrat456 Running 4.56's with a 2.2L 4 cylinder is the same as running a Vortec 4.3 V6 with a 2.45 ring and pinion gear. Same amount of torque to the wheels. wow... the 2.2s really lack that much torque. remind me never to buy a 2.2
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10-01-2007, 06:14 PM	#11
GeorgesBlazah Slap my meat on your pita Age: 24 Join Date: Sep 2004 Posts: 7,501 Location: south jersey User is: OffLine	Re: 2wd tire size...what size effects the truck in what way? 25mpg in my 2.2 woo!
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10-01-2007, 06:52 PM	#12
Rinkrat456 Lifted Member Join Date: Sep 2006 Posts: 986 Location: Woodbury, MN User is: OffLine	Re: 2wd tire size...what size effects the truck in what way? Quote: Originally Posted by GeorgesBlazah 25mpg in my 2.2 woo! My sis gets that with her 4.8L V8 ZR5. Wohoo!
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10-01-2007, 08:11 PM	#13
zaathur151 KCSSERIES Age: 21 Join Date: Jan 2005 Posts: 1,563 Location: Odessa Mo. User is: OffLine	Re: 2wd tire size...what size effects the truck in what way? shit the new corvette z06 hurd they get 22+ on the highway with that 427 7.0L motor they have
	[Reply w/Quote]

10-01-2007, 08:59 PM	#14
Rinkrat456 Lifted Member Join Date: Sep 2006 Posts: 986 Location: Woodbury, MN User is: OffLine	Re: 2wd tire size...what size effects the truck in what way? Quote: Originally Posted by zaathur151 shit the new corvette z06 hurd they get 22+ on the highway with that 427 7.0L motor they have You can thank the 6th gear .50:1 for that. Otherwise as a daily driver, reports have been coming in with the fuel economy read out stuck at 15mpg with the LS7.
	[Reply w/Quote]

10-01-2007, 09:56 PM	#15
npor Registered User Age: 20 Join Date: Aug 2007 Posts: 264 Location: User is: OffLine	Re: 2wd tire size...what size effects the truck in what way? Quote: Originally Posted by Rinkrat456 You can thank the 6th gear .50:1 for that. Otherwise as a daily driver, reports have been coming in with the fuel economy read out stuck at 15mpg with the LS7. our 06' C6 gets around 15MPG with the LS6, 6spd auto tranny thumbs down anyway, back on topic. i've got stock gears...as far as i know anyway, i'm sure nobody has messed with them. just how hard is it to change out a set of rear gears?
	[Reply w/Quote]

10-01-2007, 10:02 PM	#16
crazy91s10 Registered Asshole Age: 24 Join Date: Oct 2004 Posts: 4,102 Location: Moscow, PA / Mansfield, PA User is: OffLine	Re: 2wd tire size...what size effects the truck in what way? Quote: Originally Posted by npor our 06' C6 gets around 15MPG with the LS6, 6spd auto tranny thumbs down anyway, back on topic. i've got stock gears...as far as i know anyway, i'm sure nobody has messed with them. just how hard is it to change out a set of rear gears? if you plan to go with a conventional gm gear like 3.73, 4.10, and i think 4.56 then it'd be easier to just find a complete rear with those gears from a junkyard s10... although im not sure how common 4.56s really are in stock s-series trucks. if you go with a somewhat uncommon gearing then you'll have to purchase a gear set. if you end up purchasing a gear set then it'd probably be in your best interest to have a professional set them up for you. rink can elaborate on that but its a very tedious procedure that doesnt allow for error. it also involves some special tools to measure backlash etc..
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10-01-2007, 10:09 PM	#17
npor Registered User Age: 20 Join Date: Aug 2007 Posts: 264 Location: User is: OffLine	Re: 2wd tire size...what size effects the truck in what way? Quote: Originally Posted by crazy91s10 if you plan to go with a conventional gm gear like 3.73, 4.10, and i think 4.56 then it'd be easier to just find a complete rear with those gears from a junkyard s10... although im not sure how common 4.56s really are in stock s-series trucks. if you go with a somewhat uncommon gearing then you'll have to purchase a gear set. if you end up purchasing a gear set then it'd probably be in your best interest to have a professional set them up for you. rink can elaborate on that but its a very tedious procedure that doesnt allow for error. it also involves some special tools to measure backlash etc.. so, swapping the entire axle would be a better bet. that sounds alot easier than opening that transfercase up, and sticking my hands inside. haha. 4.56's...what numbers would i be looking for in the glovebox? i'm sure it's in a thread somewhere around here, so i'll search in a second. ha. also, when i do purchase the entire axle, 1 what all would i need to get with the axle? any other parts from the truck, and would it be a bad idea to put the axle in with everything else still being stock? would i see any...bad things by putting the axle in there just like my truck is now? or any improvements?
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10-01-2007, 11:12 PM	#18
bobbys10man Registered Dreamer Age: 26 Join Date: Nov 2005 Posts: 546 Location: Lafayette, IN User is: OffLine	Re: 2wd tire size...what size effects the truck in what way? Quote: Originally Posted by npor so, swapping the entire axle would be a better bet. that sounds alot easier than opening that transfercase up, and sticking my hands inside. haha. 4.56's...what numbers would i be looking for in the glovebox? i'm sure it's in a thread somewhere around here, so i'll search in a second. ha. also, when i do purchase the entire axle, 1 what all would i need to get with the axle? any other parts from the truck, and would it be a bad idea to put the axle in with everything else still being stock? would i see any...bad things by putting the axle in there just like my truck is now? or any improvements? there is no transfer case in your truck thats only for four wheel frive trucks... all you would need is just the rear end... I think G80 code in the glove box is a "posi" rear end
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10-01-2007, 11:33 PM	#19
npor Registered User Age: 20 Join Date: Aug 2007 Posts: 264 Location: User is: OffLine	Re: 2wd tire size...what size effects the truck in what way? Quote: Originally Posted by bobbys10man there is no transfer case in your truck thats only for four wheel frive trucks... all you would need is just the rear end... I think G80 code in the glove box is a "posi" rear end errr...not transfercase.... yeah...didn't mean transfercase... uhhh... thanks
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10-01-2007, 11:37 PM	#20
crazy91s10 Registered Asshole Age: 24 Join Date: Oct 2004 Posts: 4,102 Location: Moscow, PA / Mansfield, PA User is: OffLine	Re: 2wd tire size...what size effects the truck in what way? Quote: Originally Posted by bobbys10man there is no transfer case in your truck thats only for four wheel frive trucks... all you would need is just the rear end... I think G80 code in the glove box is a "posi" rear end yes to what bobby said... just to add to what he said. the "g80" code will accompany the actual gear ratio code. look around for gm gear codes... i'm too lazy to copy/paste them into here. an example of what you'll see on the glove box sticker: "GU6 G80" which translates to: 3.42 posi and as to using 4.56 gears... its gunna be tough to find them in a junkyard s10. like i said before, i'm not even sure how common that gear ration is in a stock truck and i've never actually come across a 4.56 rear in any junkyard that i've been to. most common ratios that you will find in a junkyard will be 3.08, 3.42, 3.73, and 4.10. any lower (numerically higher) and you'll most likely end up having to purchase a new gearset and have them installed in your existing rear axle. and to answer your other question... it will not hurt anything by putting different gears in your truck. whether you swap out the entire axle or you have new gears installed there will be no adverse affects. only minor thing that may change is your speedo reeding will be off. depending on what gears you choose and what size tire you run, your speedo will either be reading too slow or two fast or may not be off at all. just depends on the tire/gear combo you use. if your truck is a second gen i believe a dealer can recalibrate your speedo if necessary. if its a firstgen then you'll just have to know how much the speedo is off and drive accordingly. Last edited by crazy91s10 : 10-01-2007 at 11:42 PM.
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10-01-2007, 11:49 PM	#21
Rinkrat456 Lifted Member Join Date: Sep 2006 Posts: 986 Location: Woodbury, MN User is: OffLine	Re: 2wd tire size...what size effects the truck in what way? I mean this in the most respectful way possible, if anyone on here asks what all is involved with a gear change, they're better off taking it to the shop. I do the same thing with my welding. I can spot weld all day long but when it comes to strength and structural welds I know my limitations and have no problem taking my welding projects to a professional. Same goes with a gear change. Call around your area looking for a driveline shop, or more specifically a clutch, U-joint, driveshaft type of shop, and ask them what it would cost for you to bring the entire rear axle assembly to them to have the gears changed. Order the ring and pinion set, along with the master intallation kit THROUGH THE SHOP, so labor will be cheaper. Nothing pisses a place off more than you bringing aftermarket gears and the install kit to the place just to have it done. If you're looking to save money, read up on how it's done, and do it yourself on a spare junkyard axle that you can practice with. No, it wont save you money the first go-around. But you'll have a great foundation of knowledge for doing gear changes later on. 1st time though, have a shop do it for you and watch the laborer while he works. Ask questions, be specific, write down everything. The first time I had my 3.42's swapped out for 4.10's, I paid right around $400 or so for the 7.625". Next time around after that axle took a shit, I did it myself again on a different "new" rear, swapping out the 3.08's for 3.73's, same truck. No common S-truck came out with 4.56's. There were a few in the olden days when the Isuzu Hombre came out with the diesel 2.2, but that was the 7.5" many years ago, only offered in Mexico. I think there is one more exception in 1st gens that I'm forgetting, but the gist of it is, the 4.56's are so rare your best bet is to go straight to the top with 4.56's and have a shop do it for you. If you're looking for a G80 Eaton Gov-Lok, send me a PM, I have one in decent condition with only 36k miles on the 7.625". You can find 4.10's pretty easily in extended cab 2.2L trucks, but you're still limited to a 31" tire, and even then you'll feel the drag. Like I said earlier, a 2.2L does not do well against a load like a V6 will. The tu-tu was made solely to impress the Greeny's looking for a fuel efficient daily driver truck. Last edited by Rinkrat456 : 10-01-2007 at 11:52 PM.
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10-02-2007, 04:17 PM	#22
npor Registered User Age: 20 Join Date: Aug 2007 Posts: 264 Location: User is: OffLine	Re: 2wd tire size...what size effects the truck in what way? Quote: Originally Posted by Rinkrat456 I mean this in the most respectful way possible, if anyone on here asks what all is involved with a gear change, they're better off taking it to the shop. I do the same thing with my welding. I can spot weld all day long but when it comes to strength and structural welds I know my limitations and have no problem taking my welding projects to a professional. Same goes with a gear change. Call around your area looking for a driveline shop, or more specifically a clutch, U-joint, driveshaft type of shop, and ask them what it would cost for you to bring the entire rear axle assembly to them to have the gears changed. Order the ring and pinion set, along with the master intallation kit THROUGH THE SHOP, so labor will be cheaper. Nothing pisses a place off more than you bringing aftermarket gears and the install kit to the place just to have it done. If you're looking to save money, read up on how it's done, and do it yourself on a spare junkyard axle that you can practice with. No, it wont save you money the first go-around. But you'll have a great foundation of knowledge for doing gear changes later on. 1st time though, have a shop do it for you and watch the laborer while he works. Ask questions, be specific, write down everything. The first time I had my 3.42's swapped out for 4.10's, I paid right around $400 or so for the 7.625". Next time around after that axle took a shit, I did it myself again on a different "new" rear, swapping out the 3.08's for 3.73's, same truck. No common S-truck came out with 4.56's. There were a few in the olden days when the Isuzu Hombre came out with the diesel 2.2, but that was the 7.5" many years ago, only offered in Mexico. I think there is one more exception in 1st gens that I'm forgetting, but the gist of it is, the 4.56's are so rare your best bet is to go straight to the top with 4.56's and have a shop do it for you. If you're looking for a G80 Eaton Gov-Lok, send me a PM, I have one in decent condition with only 36k miles on the 7.625". You can find 4.10's pretty easily in extended cab 2.2L trucks, but you're still limited to a 31" tire, and even then you'll feel the drag. Like I said earlier, a 2.2L does not do well against a load like a V6 will. The tu-tu was made solely to impress the Greeny's looking for a fuel efficient daily driver truck. oh yes, there was no way i was going to complete this on my own. i've taken a simple obx LSD apart for a 90-93 accord and reassembeled it using a writeup on honda-tech, but that's as far as i've been. and it performed very nicely afterwards i haven't searched much...because i'm not sure as to what i'd be searching for, but i'm still in the learning stage right now, i want to learn as much as i can before i do anything to this truck. you said you've got an G80 Eaton Gov-Lok, and you said it was on a 7.625" what is this 7.625? like i said, if theres a thread where this is covered please direct me towards it, i'm all for learning
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10-02-2007, 05:21 PM	#23
crazy91s10 Registered Asshole Age: 24 Join Date: Oct 2004 Posts: 4,102 Location: Moscow, PA / Mansfield, PA User is: OffLine	Re: 2wd tire size...what size effects the truck in what way? the 7.625" rears started showing up in the last few years of firstgen production and they continued to use them in the s10s till the production of the s10 was ended. the earlier 7.5" rear showed up only in the firstgens and they stopped using them somewhere in the very late 80s or very early 90s. not exactly sure when they stopped using the 7.5" rears... all i know is that my 93 came with a 7.625 rear in it. so basically depends what year your truck is
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10-02-2007, 07:14 PM	#24
Rinkrat456 Lifted Member Join Date: Sep 2006 Posts: 986 Location: Woodbury, MN User is: OffLine	Re: 2wd tire size...what size effects the truck in what way? It's the rear end in your truck. The 7.625" measurement is the diameter of the ring gear. The strength of a rear end is not directly proportional to the diameter of the ring gear, but the larger it is, the stronger the rear will be.
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10-03-2007, 12:00 AM	#25
npor Registered User Age: 20 Join Date: Aug 2007 Posts: 264 Location: User is: OffLine	Re: 2wd tire size...what size effects the truck in what way? sweet now onto wheels...i want that wide stance aswell. i read on another thread, that with a 4" backspacing, the tire will stick out roughly 1 inch. what was not covered in that thread, was the 2wd/4wd thing. is that on a 2wd, or a 4wd? basically what i'm looking at is a 2"BL thats coming in the near future, but i'm still unclear on what type of a tire i'll be able to fit under my 2wd sonoma. xxx/xx/xx back onto the wheels, i want something along the lines of this i'm assuming i should just keep it at 15" wheels, but what should they be? 15xwhat?
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10-04-2007, 01:35 AM	#26
npor Registered User Age: 20 Join Date: Aug 2007 Posts: 264 Location: User is: OffLine	Re: 2wd tire size...what size effects the truck in what way? bump for an answer? i searched, but i must of been searching with the wrong key words...nothings come up that has helped me very much
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10-04-2007, 02:26 AM	#27
Rinkrat456 Lifted Member Join Date: Sep 2006 Posts: 986 Location: Woodbury, MN User is: OffLine	Re: 2wd tire size...what size effects the truck in what way? On a 2wd Sonoma, a 2" body lift allows 30x9.50R15's all the way around with slight rubbing of the frame. Rims with 4" of backspacing on a 2wd, keep it stock. If possible, use your rims with 1.25-1.5" bolt on billet aluminum spacers. The cost of the spacers will be less than the cost of new rims by half, and will actually allow you to run up to a 31x10.50R15 with the same amount of rubbing as a 30x9.50 without spacers. Still given a 2" body lift. 2" body lift. Stock rims. 30x9.50 with slight rubbing of the frame 2" body lift Stock rims Bolt on 1.25-1.5" spacers 31x10.50R15 With a 2.2L, I'd stick to 4.10 gears and 30x9.50's if this is your daily, 4.56's if this is an off-road truck.
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10-04-2007, 04:34 PM	#28
npor Registered User Age: 20 Join Date: Aug 2007 Posts: 264 Location: User is: OffLine	Re: 2wd tire size...what size effects the truck in what way? now...when you're talking about the rubbing, i'm assuming "full lock" is the correct terminology, (when i've turned my wheel all the way to the left/right, or my suspension has maxed itself out?) i'll rub my frame at full lock? also, i highly doubt i'll be changing the gears any time soon, i just went and checked in my glovebox and i saw a GT4, which according to the information that i found when i searched, means i've got 3.73 gears. so, as of now, i think my plan is to go with 2"body lift stock rims 30x9.50 bolt on 1.25-1.5" spacers and all of that is on the stock 3.73 gears, on my DD. i know the 4.10's multiply torque more than the 3.73's do, but would it be a smart idea to run that setup on 3.73 gears?
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10-04-2007, 05:39 PM	#29
bobbys10man Registered Dreamer Age: 26 Join Date: Nov 2005 Posts: 546 Location: Lafayette, IN User is: OffLine	Re: 2wd tire size...what size effects the truck in what way? I run a 5" lift with 31x10.5's with no spacers with a 2.2 and 3.73 gears and its my daily... I have not had any problems really... Its a little slow on the interstate though
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10-04-2007, 05:56 PM	#30
npor Registered User Age: 20 Join Date: Aug 2007 Posts: 264 Location: User is: OffLine	Re: 2wd tire size...what size effects the truck in what way? and the 5" suspension lift puts more strain on the motor..am i correct? if that's the case, then i'm guessing that the setup i've put together (With help from you guys, haha) will work with minimal problems (as far as MPH, and acceleration) Last edited by npor : 10-04-2007 at 05:57 PM.
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10-05-2007, 07:14 AM	#31
bobbys10man Registered Dreamer Age: 26 Join Date: Nov 2005 Posts: 546 Location: Lafayette, IN User is: OffLine	Re: 2wd tire size...what size effects the truck in what way? I'd say the tire size puts the strain on the motor more than the lift height...
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10-05-2007, 07:21 AM	#32
melon16 Tucking 37"s what?!?! Age: 23 Join Date: Jun 2006 Posts: 356 Location: Hamilton, Ontario (Canada) User is: OffLine	Re: 2wd tire size...what size effects the truck in what way? wow theres someone else on the forum at 6 in the morning haha---anyways I am running tires 5" taller than stock with roughly 4 inches of lift with a v6 i also had the stock tires with just the lift and my city mpg was the same until i put the tires on---hwy mpg dropped maybe 1mpg. my tires however dropped me from about 18-19mpg down to 15. really not a huge difference but i'd bet that the 2.2 would struggle a lot more and thus have a bigger drop in mpg..... just slap them on and see what happens! (gas is expensive--you might as well use it haha)
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