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Old 10-28-2009, 04:59 PM   #1
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Question Cummins 4BT into a 2003 4x4 S10?

Hello everyone, I have been pondering the idea of converting my 4.3 S10 into a 4BT S10. For transmissions i coulld use a turbo 400 or a 700R4 but i would prefer a 5 speed.Also I am not sure if i could beef up the IFS suspension enough to hold up an 800 pound engine. That brings me to my next point, a SFA swap. What are my axle options? a Dana 44, and could a 44 hold up to 105+ HP and 265+ lbs of torque? Any information will help. Thanks


P.S. I wasnt sure what section to put this in so if a moderator thinks its in the wrong spot feel free to move it
Old 10-28-2009, 06:04 PM   #2
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Re: Cummins 4BT into a 2003 4x4 S10?

Also I am very mechanicly inclined and i have acess to a full auto shop with lifts and about every tool you could ever need. Any thoughts or opinions are welcome
Old 10-28-2009, 06:59 PM   #3
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Re: Cummins 4BT into a 2003 4x4 S10?

UPDATE:Looked at ebay and found a good loking 4bta and it comes with an Allison 545. I know those have been around forever but are they any good? here is the link

http://rover.ebay.com/ar/1/711-53200...4&toolid=10001 http://cgi.ebay.com/CUMMINS-3-9-TURBO-DIESEL-ENGINE-WITH-ALLISON-TRANS_W0QQitemZ170398312602QQcmdZViewItemQQptZBI_H eavy_Equipment_Parts?hash=item27ac87e89a
http://rover.ebay.com/ar/1/711-53200...4&toolid=10001

Last edited by Ruffcorn : 10-28-2009 at 07:01 PM. Reason: spelled a few words wrong
Old 10-28-2009, 07:20 PM   #4
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Re: Cummins 4BT into a 2003 4x4 S10?

also i found a 205 32 spline divorced transfer case to go with it but now my question is am i going to have enough room for all of this, plus a 545 weighs some 400 pounds
Old 10-28-2009, 10:52 PM   #5
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Re: Cummins 4BT into a 2003 4x4 S10?

i work in a hot rod diesel shop that deals primarily with cummins, ive heard from both my boss, and from my grandpa (from oklahoma) that swapping a 4bt cummins into an s10 is pretty popular for parts of the country where you have a lot of distance between towns, i guess 50 mpg is not uncommon of a 4bt in a light truck like an s10

were actually in the process of swapping a 6bt mechanical 12 valve into a ford f350, lots of handmade pipes and plumbing to do, but its just about done, looks pretty cool too

good luck with your swap, and make a project thread about it, should be cool to see
Old 10-29-2009, 04:31 AM   #6
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Re: Cummins 4BT into a 2003 4x4 S10?

Wish I could help on the diesel end of things, but I can't, never even seen a 4BT in person, but good luck on that.

As for the suspension though, piece of cake either way, depending on how much of a lift you want. Because of the torsion beam front suspension, it's pretty easy to get up to 2" of lift, which should more than compensate for the extra weight. You will want to get some stiffer or adjustable shocks because with the extra weight the front end might pogo a little bit with that much weight.

The other option for the front suspension would be coil-overs. With that much weight the only things you'd really need do would be to get 450-550lb/in springs and possibly re-inforce the upper shock mount bracket a tiny bit. Ride height would be adjustable and depending on the coil-over you got, i'm sure just about any ammount of lift the arms support, you could get the right height coil-over for.

As for the front differential, I'm not sure what if anything the syclone and typhoon guys do, but those use the same front diff as the 4x4's and they take some serious power and beatings.

If you did decide to go with a SFA, 265ft/lbs should be a piece of cake for just about any axle to take. Dana44's are pretty good, but a bit pricey for the performance in my opinion. A ford 8.8 or a an 8.5" 10-bolt out of a full size truck would be much cheaper and more than handle the power this engine has.
Old 10-29-2009, 02:05 PM   #7
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Re: Cummins 4BT into a 2003 4x4 S10?

also, the dana 60's are about the same price as the GM 10 bolts, both in the rearend itself and the parts for it... and theyre pretty stout too, much stronger than a 10 bolt

but only 100 HP and 265 TQ is not really much at all, the 4.3 made more power and the same torque in stock form... so thats nothing the stock driveline cant handle
Old 10-29-2009, 02:51 PM   #8
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Re: Cummins 4BT into a 2003 4x4 S10?

epic build, *subsribed*
i really want to stuff a diesel into my s10, also i know cummins makes 4cyl ISB's although ive never seen one.
Old 10-29-2009, 06:18 PM   #9
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Re: Cummins 4BT into a 2003 4x4 S10?

Thanks everyone for the information so far. I have decided to do this in phases scince my s10 is my only means of transportation and i have to make it to school and work so i can fund my beast. So with winter approaching it very well could get put on hold until the summer when i can work full time and i wont need my truck every day.

So during the winter phase i am going to start figuring out what my parts list will be also i will be starting to get a few things found, (transmission, motor mounts, ect.. ect...) My dad has said the best place to start is to get a rough estimate of how much all my parts are going to cost but with me being only 16 this is the only thing i have to spend my money on

The local diesel shop says that when i am ready they can find me a 4BTA that is read to run for a decent price so i have that aspect pretty much covered.

To make things even better our new heated building is almost finished so maybe i can get some engine and tranny work done during the winter months.

I am very excited to get cracking away at my Cummins beast!!!
Old 10-29-2009, 06:24 PM   #10
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Re: Cummins 4BT into a 2003 4x4 S10?

Quote: Originally Posted by Ruffcorn
My dad has said the best place to start is to get a rough estimate of how much all my parts are going to cost but with me being only 16 this is the only thing i have to spend my money on
the general rule of thumb around here is... figure out what everything is going to cost, and then double it, thats about what youll end up paying when everything is finished
Old 10-29-2009, 06:30 PM   #11
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Re: Cummins 4BT into a 2003 4x4 S10?

Quote: Originally Posted by Maverick2664
the general rule of thumb around here is... figure out what everything is going to cost, and then double it, thats about what youll end up paying when everything is finished
Yeah the old man has told me that. I think he first told me that when me and a couple friends swaped a mechanical 12 valve in to a 72 hiboy. Good stuff

Whats everyone's opinions on running an Allison 545 with a divorced NP 205 transfer case?
Old 10-29-2009, 06:36 PM   #12
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Re: Cummins 4BT into a 2003 4x4 S10?

i dont know about specific models or anything, but i do know that allisons in general are an extremely well built tranny, theyre damn near bulletproof, at least the ones behind the new duramax's are... in the last 2 years ive been at this shop, weve only had 1 maybe 2 allisons in for repair, and i dont remember it being anything catastrophic
Old 10-29-2009, 06:48 PM   #13
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Re: Cummins 4BT into a 2003 4x4 S10?

Yeah from what the Tranny shops have told me an allison 545 can be adapted to fit on about any diesel up to an 8.2 detroit so if i but that engine i dont think i will ever be needing a new tranny
Also Allison 545's have been aroung for ages so they have to be good stuff

I really would like to use a divorced np 205 transfer case but i dont think there will be enough room for that huge ass tranny and then a 6 inch conecting shaft and then another 8 inches of transfer case.

Last edited by Ruffcorn : 10-29-2009 at 06:49 PM.
Old 10-29-2009, 08:24 PM   #14
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Re: Cummins 4BT into a 2003 4x4 S10?

Quote: Originally Posted by Ruffcorn
Yeah from what the Tranny shops have told me an allison 545 can be adapted to fit on about any diesel up to an 8.2 detroit so if i but that engine i dont think i will ever be needing a new tranny
Also Allison 545's have been aroung for ages so they have to be good stuff

I really would like to use a divorced np 205 transfer case but i dont think there will be enough room for that huge ass tranny and then a 6 inch conecting shaft and then another 8 inches of transfer case.
You could do it... Your driveshaft might only be about 2 ft long though...
Old 10-30-2009, 03:43 AM   #15
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Re: Cummins 4BT into a 2003 4x4 S10?

It would depend on what length wheelbase S10 you're putting it in. A 2DR blazer, nope, not at all. An extended cab long bed, yup, no problem.
Old 10-31-2009, 06:02 PM   #16
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Re: Cummins 4BT into a 2003 4x4 S10?

Quote: Originally Posted by ArtosDracon
It would depend on what length wheelbase S10 you're putting it in. A 2DR blazer, nope, not at all. An extended cab long bed, yup, no problem.

Well i have an extended cab shortbox. i think it could work
Old 11-01-2009, 01:50 PM   #17
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Re: Cummins 4BT into a 2003 4x4 S10?

subscribed!!!

ive got a 49 ford f1 on an s10 chassis and iwant to do this swap in that frame...and had the same conserns for weight in front....maybe some heavy duty airbags?!?! good luck and keep us posted
Old 11-08-2009, 09:35 PM   #18
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Re: Cummins 4BT into a 2003 4x4 S10?

Well work has been a bit delayed due to the late harvest around the area. ive just started to get together some odds and ends of the swap. i have spent quite a bit of time with my truck sitting on the lift, measuring and making some mock ups of things so far so good i guess.


As for my engine i have decided to go with a 4bta and some form of 5 speed. the allison didnt look posible due to the immense weight and length of the tranny and divorced transfer case.

I will try and keep all of you updated on my work, until then

Trevor Ruffcorn
Old 11-09-2009, 02:53 AM   #19
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Re: Cummins 4BT into a 2003 4x4 S10?

That is the only major downside to the allison transmisions, they're heavy as hell.
Old 11-09-2009, 12:02 PM   #20
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Re: Cummins 4BT into a 2003 4x4 S10?

it would seem that a GM 6.2/6.5T swap would be
MUCH easier, less expensive, more powerful,
smoother running, and sound better.
not to mention probably lighter as well.
Old 11-09-2009, 12:17 PM   #21
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Re: Cummins 4BT into a 2003 4x4 S10?

Can't wait to see the outcome. GM should have offered a diesel in the s10's. Diesel FTW!
Old 11-09-2009, 12:21 PM   #22
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Re: Cummins 4BT into a 2003 4x4 S10?

Quote: Originally Posted by deathphoenix99
Can't wait to see the outcome. GM should have offered a diesel in the s10's. Diesel FTW!
i'm pretty sure they do in brazil
Old 11-09-2009, 12:54 PM   #23
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Re: Cummins 4BT into a 2003 4x4 S10?

Quote: Originally Posted by jeffs99dime
i'm pretty sure they do in brazil

Let me rephrase my statement, I mean make a diesel S10, other than the 80's with the 2.2, for USA. Hell, I wish they'd just make more diesel vehicles available to us. The only ones they offer are in Full-size heavy duty applications. Be nice to see some small applications, been better to have gotten one in an S10. Like a 3 liter 6 cylinder diesel would be nice.
Old 11-09-2009, 04:12 PM   #24
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Re: Cummins 4BT into a 2003 4x4 S10?

Quote: Originally Posted by deathphoenix99
Let me rephrase my statement, I mean make a diesel S10, other than the 80's with the 2.2, for USA. Hell, I wish they'd just make more diesel vehicles available to us. The only ones they offer are in Full-size heavy duty applications. Be nice to see some small applications, been better to have gotten one in an S10. Like a 3 liter 6 cylinder diesel would be nice.

i agree
Old 11-09-2009, 11:15 PM   #25
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Re: Cummins 4BT into a 2003 4x4 S10?

Quote: Originally Posted by Crew Cab Sonoma
it would seem that a GM 6.2/6.5T swap would be
MUCH easier, less expensive, more powerful,
smoother running, and sound better.
not to mention probably lighter as well.

well thank you for your opionion. DieselS10 has alrady doen a 6.5 swap and i wanted to do something nobody has done before and plus i am a big cummins fan
Old 11-09-2009, 11:18 PM   #26
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Re: Cummins 4BT into a 2003 4x4 S10?

Quote: Originally Posted by deathphoenix99
Can't wait to see the outcome. GM should have offered a diesel in the s10's. Diesel FTW!

Im pretty excited myself haha it would of been nice to see a powerful small diesel in an s10. Being a chevy fan myself, if dodge had put a 4bt in a dakota i would own one
Old 11-10-2009, 07:19 PM   #27
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Re: Cummins 4BT into a 2003 4x4 S10?

Quote: Originally Posted by Ruffcorn
well thank you for your opionion. DieselS10 has alrady doen a 6.5 swap and i wanted to do something nobody has done before and plus i am a big cummins fan
well, ok... just remember:


"different" is is overrated...

BTW, did you win that engine?
Old 11-11-2009, 06:27 PM   #28
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Re: Cummins 4BT into a 2003 4x4 S10?

lol well i didnt win that engine, the shipping was rediculous. On a positive note there is a frito lay distributer about an hour north of my house and they have several 4BTA powered vans that they are going to be replacing shortly.

So when i get the engine i am going to take it to the local Diesel Specialties and have it looked over and tuned up. After i get payed for the fall harvest i will be making some realy head way in aquiring all the parts that im going to need

Thanks,
Trevor Ruffcorn
Old 11-11-2009, 10:14 PM   #29
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Re: Cummins 4BT into a 2003 4x4 S10?

Subscribes!

I was going between the 6.5 and a 4bt and just ran across a good deal on the 6.5 1st. The 6.5 is lighter as mentioned earlier and it does, IMO, sound better, but the power potential and durability of the 4bt is leaps a bounds ahead of the 6.5.

I wouldn't worry about the IFS from a power stand point, but you are probably going to need to put a solid axle in the front just to get some room, you know how tall those motors are. Even a 350 requires a custom oil pan to clear the differential in a 4wd S10. A Dana 44 front should be ample unless you plan on running very large tires and/or tweaking the engine. I don't think the IFS will get along with the weight either.

I can't wait to see this thing coming along.
Old 11-13-2009, 11:19 AM   #30
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Re: Cummins 4BT into a 2003 4x4 S10?

BTW, some of the newer AM General built "6500's"
have been beefed up with several block and other
structural improvements, and are rated at 230-250 hp
and up tp 550 tq....
Old 11-13-2009, 11:43 AM   #31
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Re: Cummins 4BT into a 2003 4x4 S10?

http://www.thedieselpage.com/features/AMGsnew65.htm
Old 11-13-2009, 11:56 AM   #32
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Re: Cummins 4BT into a 2003 4x4 S10?

interesting article.
Old 11-13-2009, 08:15 PM   #33
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Re: Cummins 4BT into a 2003 4x4 S10?

Quote: Originally Posted by DieselS10
Subscribes!

I was going between the 6.5 and a 4bt and just ran across a good deal on the 6.5 1st. The 6.5 is lighter as mentioned earlier and it does, IMO, sound better, but the power potential and durability of the 4bt is leaps a bounds ahead of the 6.5.

I wouldn't worry about the IFS from a power stand point, but you are probably going to need to put a solid axle in the front just to get some room, you know how tall those motors are. Even a 350 requires a custom oil pan to clear the differential in a 4wd S10. A Dana 44 front should be ample unless you plan on running very large tires and/or tweaking the engine. I don't think the IFS will get along with the weight either.

I can't wait to see this thing coming along.

What do you think about front coil springs to cope with the weight increase?

If i could bet a gould deal on a 6.5 i may consider it, but its Cummins until then!

i was planning on running 33 inch bfg all terrains for tires.


The news just keeps getting better! Harvest is done and im going to get payed for that in a couple days, and as fall tillage gets moving im going to have more money to play with and more to burn!!!! hahaha

Thanks,
Trevor Ruffcorn
Old 11-13-2009, 08:18 PM   #34
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Re: Cummins 4BT into a 2003 4x4 S10?

Quote: Originally Posted by Crew Cab Sonoma
BTW, some of the newer AM General built "6500's"
have been beefed up with several block and other
structural improvements, and are rated at 230-250 hp
and up tp 550 tq....
I checked the page and that is one sexy engine!

I wonder what one of those beasts would cost?
Old 11-14-2009, 10:26 AM   #35
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Re: Cummins 4BT into a 2003 4x4 S10?

that is a nice looking engine
Old 11-18-2009, 01:48 AM   #36
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Re: Cummins 4BT into a 2003 4x4 S10?

I read about that engine just after it came out and it looks very promising and expensive. I would just about bet that I got my D-max/Ally for about a 1/4 of what that version of the 6.5 costs new.
Old 11-18-2009, 01:49 AM   #37
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Re: Cummins 4BT into a 2003 4x4 S10?

Quote: Originally Posted by Ruffcorn
What do you think about front coil springs to cope with the weight increase?
With the IFS or a SFA?
Old 11-18-2009, 01:14 PM   #38
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Re: Cummins 4BT into a 2003 4x4 S10?

Quote: Originally Posted by DieselS10
I read about that engine just after it came out and it looks very promising and expensive. I would just about bet that I got my D-max/Ally for about a 1/4 of what that version of the 6.5 costs new.
will probably take a while, but they will likely
eventually become available in military
surplus Hummers...
Old 11-19-2009, 10:10 PM   #39
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Re: Cummins 4BT into a 2003 4x4 S10?

Quote: Originally Posted by DieselS10
With the IFS or a SFA?
IFS
Old 11-20-2009, 12:30 AM   #40
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Re: Cummins 4BT into a 2003 4x4 S10?

With the torsion bars or are you talking about redesigning the IFS to just use a coil spring?

Either way, I wouldn't want to put that much weight on the S10 IFS, but I might be underestimating it's load handling ability.



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