56mmTB ONLY FOR 1998-2003

[J.DUNN]

I have been reading some of the postings where a 56mm throttle body you can purchase from the junkyard for a 2.3l quad 4 eng. Is this a direct bolt on or with minor modifications? Can you still use factory air intake with this mod? What cars can I get this from?Somebody want to a how to?

[Zq-8_dawg]

Quote: Originally Posted by J.DUNN

I have been reading some of the postings where a 56mm throttle body you can purchase from the junkyard for a 2.3l quad 4 eng. Is this a direct bolt on or with minor modifications? Can you still use factory air intake with this mod? What cars can I get this from?Somebody want to a how to?

What I did was I looked on car-part.com for a 93 grand am throttle body with the 2.3L auto tranny. Then I went to the junk yard and picked it up, took it apart and cleaned it up. The 2.3l TB is missing one spot for the FPR vac line, however you can tap it into the other small line with a Rubber Vac line connector, or leave it unplugged for a 10PSI Increase in the fuel system, which is what I did. You will also need 1 small 10mm by 1" long bolt or you could drill it out and have 3 bolts holding the TB on. The removal of the current TB is straight forward and will require a 10mm socket or wrench, and a pair of needle nose pliers to remove the vac lines. Then the 56MM TB just installs like the old one. just make sure to attach the Throttle cable on before you try to bolt it back up, it makes it alot easier to hook up. Use 2-3 of the TB bolts that you took off the stock TB depending if you drilled out the hole or not.
You will also use the stock throttle cable bracket.

One thing to look out for is that if you have cruise control make sure that the 2.3L TB has the nub for the cruise cable.

[Zq-8_dawg]

here are the cruise control cable adjustment instructions


1. With a small flat-bladed tool, carefully pry up on the cruise control cable adjuster to the unlocked position. The toggle lever is natural in color in order to provide a visual aid.

2. Adjust the length of the cruise control cable until there is a clearance of 0.0-1.0 mm (0.0-0.04 in) between the cruise control cable and the accelerator cable throttle lever cams.

3. Carefully squeeze the cruise control cable adjuster down to the locked position.

[J.DUNN]

what are the factory size of the 2.2L throttle body

[Zq-8_dawg]

The stock TB is a 52mm

[Stinky]

Quote: Originally Posted by Zq-8_dawg

What I did was I looked on car-part.com for a 93 grand am throttle body with the 2.3L auto tranny. Then I went to the junk yard and picked it up, took it apart and cleaned it up. The 2.3l TB is missing one spot for the FPR vac line, however you can tap it into the other small line with a Rubber Vac line connector, or leave it unplugged for a 10PSI Increase in the fuel system, which is what I did. You will also need 1 small 10mm by 1" long bolt or you could drill it out and have 3 bolts holding the TB on. The removal of the current TB is straight forward and will require a 10mm socket or wrench, and a pair of needle nose pliers to remove the vac lines. Then the 56MM TB just installs like the old one. just make sure to attach the Throttle cable on before you try to bolt it back up, it makes it alot easier to hook up. Use 2-3 of the TB bolts that you took off the stock TB depending if you drilled out the hole or not.
You will also use the stock throttle cable bracket.

One thing to look out for is that if you have cruise control make sure that the 2.3L TB has the nub for the cruise cable.

You get a increase of pressure at idle but not at w.o.t. High vaccum at idle=low fuel pressure,low vaccum at w.o.t=higher pressure.You are basicly just wasting fuel an probably hampering performance.That is why it was attatched in the first place,it is a rising rate pressure regulator

[abish]

Quote: Originally Posted by Stinky

You get a increase of pressure at idle but not at w.o.t. High vaccum at idle=low fuel pressure,low vaccum at w.o.t=higher pressure.You are basicly just wasting fuel an probably hampering performance.That is why it was attatched in the first place,it is a rising rate pressure regulator

what if we took the 2.3 quad tb and bored it out to like 60 would that be too much air i only have pacesetter header 40 series flow highflow cat and backyard intake.

[Zq-8_dawg]

Quote: Originally Posted by abish

what if we took the 2.3 quad tb and bored it out to like 60 would that be too much air i only have pacesetter header 40 series flow highflow cat and backyard intake.

Honestly unless you get a decent intake, and or port and polish the head, I wouldn't worry about getting it bored out any further. The engine in the stock form can only flow so much.

[chevync]

What kind of horse power would a person get with this mod?

[Zq-8_dawg]

Quote: Originally Posted by chevync

What kind of horse power would a person get with this mod?

Gains will vary with other mods. I would say maybe 3-5 HP at the most to the wheels.

[cleanwhitenoma]

hey zq-8, am i right to assume you got the auto tranny throttle body cuz you have an auto, and that i should get the manual tranny tb?

[Zq-8_dawg]

I had a manual tranny, and I used the TB off of a automatic.

[gregsgreenmachine]

My junkyard buddy said that in some years, the auto's TB is bigger than the 5-speed's. That's why I went with the auto's tb.

[mikersdime]

Quote: Originally Posted by gregsgreenmachine

My junkyard buddy said that in some years, the auto's TB is bigger than the 5-speed's. That's why I went with the auto's tb.

I didn't know the Grand Am's came with 5-speeds =\

[nox]

yup, my buddy had a manual 93 grand am

[Zq-8_dawg]

Quote: Originally Posted by creeper1982

I was just wondering if anyone had some pictures of this install? or some pics of it after it is installed?

Quote: Originally Posted by JPowell

Any pics of the throttle body install?

Sorry guys I don't have any pics of the install, but it is a pretty straight forward process, you remove your current TB and replace it with the 56mm TB which looks identical to the one already on the truck.

[mikersdime]

You're also gonna want to get a T-adapter for the second vac-line or you will be running rich.

[creeper1982]

Where can I get The T-adaptor?Autozone? Also what kind of gains could I expect from this. and what are you guys using to clean the tb up with? Thanks

[mikersdime]

I cleaned it with paint thinner because I couldn't get my hands on carburator cleaner and I was in a rush. Your best bet is to use carburator or fuel injector cleaner and the Vac line adapter you can get at Pep Boys, Auto Zone, and most other stores like that. The 56mm TB was a much more noticeable gain than a CAI or Flowmaster

[What?]

Does it have to be '93 TB or somethin like 93 - 95 TB?

[AeroBeak]

I have a '96 s10 and I was just curious as to if the 56mm throttle body will work on my truck. From what I've read, I don't see any reason as to why it wouldn't, but I'd just like to have another opinion before I go get one and put it on. Thanks.

[Stinky]

Quote: Originally Posted by AeroBeak

I have a '96 s10 and I was just curious as to if the 56mm throttle body will work on my truck. From what I've read, I don't see any reason as to why it wouldn't, but I'd just like to have another opinion before I go get one and put it on. Thanks.

It won't work because on 94-97 the throttlebody is part of the upper intake manifold.The only one who makes a replacement is RSM.Its a 59mm.Its the bottom one in the pic with the 2 manifolds

[2.2_s10]

Just did this mod on a 2000 s10 and I have to say that is the best mod ever, (well, other then a turbo) I think it gives you about the same amount of ponies as a header. I can feal it in the higher rpms. As for the install, I made my own gasket, even though I don't think you will need it, but I put one on there any way, bolted up very easy, the only hard part that I had was rigging up the throttle cable, (probably because I pulled it out of a 89 pontiac grand am DOHC quad 4). I give it 5 horsepower according to the butt dyno, lol.

[mikersdime]

Yea I spent a good 20 minutes cutting out a gasket, and ended up not needing it =\

[jrossty]

Ok, so could someone post what GM engines I could get a 56mm throttle body out of? I know a 2.3L 4cylinder will work, but was wondering if the cavalier's were running the same as our 2.2 trucks? (I have a 99' 2.2)

[luxxxury]

Hey I just found one of these TB's from a 89 grand am quad 4 on an autopart search site but it says its not for HO engine. Is this the same as you guys are getting or do I need the one for the HO version of the engine..... Its 50 bucks including shipping....

I got it from www.partrequest.com

[Stinky]

Yup,same thing.Both the Quad 4 and H.O. Quad 4 use the same size throttlebody.

[16g-95gsx]

So I've read through this thread, and it sounds like a decent junkyard mod for decently cheap in comparison to most aftermarket mods. Could someone post a list of vehicles I can get this throttle body out of? There are a good number of junkyards around me, so if I could find one of these locally for cheap I think it might be worthwhile. I'm looking for mods for a friends truck, to help him out, so I'm trying to research everything as of now.

[pewter00]

you can just i'm shure get them out of old quad 4's, i think a bretta would have this right??? also, i should be getting a tb from a 94 grand am tomm for free(i got my seats outta it also) and i'll take some coparison pics and instal pics.

[luxxxury]

Alright I got my Throttle body in from a 89 Grand am but I have no clue how im suppose to hook up the throttle cable... Im wondering if im missing a plastic peice on the new TB like we have on our stock TB to hold the throttle cable in place.....


Anyone have any ideas??

I got a pic of the TB here http://www.cardomain.com/memberpage/353376/5

[mikersdime]

You are missing the plastic piece.

Try using the stock one, it is a better hold anyway.

[luxxxury]

OK that makes sense but how do you take the plastic peice off the original TB? I looked at it and i don't see any screws or anything holding it, does it just pop off or something?

Also I did sorta get the throttle cable hooked up so there was tension and when i started the truck it was idling around 500-600 Rpms almost wanting to stall.... Im no mechanic or anything but i was just wondering what could cause that. All the vaccum hoses were installed.... Could the Air pressure sensor or TPS be bad on the TB?

Thanks

[ablues10]

hmmmmm... so i can do this on my 98? is it a problem if i have a 5 speed?
i wisk someone had pics cause im not too sure which vac line u r talkin about.

[mikersdime]

Yes you can do it with a 98. Tranny doesn't matter.

When you put the new TB on, you'll notice that there are two small vac lines of the same size, and only one plug. Simply T them together.

[sneaks2000]

Or you could get the 58mm tb from http://stsperformance.net

[mikersdime]

Yea but that is $330 + shipping as opposed to $50 for the 56mm...

[J.DUNN]

Here are the replacement part #s for 56mm from NAPA # 2-19072 for TPS and #3-1757 for Idle air control. Just in case anyone needs.

[growth]

[ Hey Zq-8! How did you hook up the throttle cable? I got a tb from a 93 Grand Am w/ auto like you said but my throttle cable will not hook up! And I'm not talking about the cruse control cable. Zq-8_dawg]Sorry guys I don't have any pics of the install, but it is a pretty straight forward process, you remove your current TB and replace it with the 56mm TB which looks identical to the one already on the truck.[/quote]

[Light-em_up]

is there any reason why we can't just bore out the stock one?

[JMew03]

easier to just go to a junk yard and get this one...

[erronisme]

Quote: Originally Posted by Light-em_up

is there any reason why we can't just bore out the stock one?

thats what i did...

got one at a junk yard and had a machine shop bore it out, made a new butterfly for it... then off i went

They can get bored out to 57mm but I went with 56mm for the safety of it all.

[Point]

ok i just did the mod and i am happy with the results. i had the tb spacer befor and had to take it off. tb alone added more hp than the spacer alone. downside is my cruse control cable wouldnt hook up right i have to work on that. it seems my gas peddal is about an inch closer to me in the cab also. got my tb at a lokal you pull it lot for 15 bucks. cant beat that with a stick.

zq8 dawg....how did you hook up your cruse? im wondering if i am the only one haveing this problem.

[sdime98]

interesting mod..point "pointed it out" to me...may have to try this out myself...good job guys..

[tstrenuous10]

Quote: Originally Posted by Point

i had the tb spacer befor and had to take it off. tb alone added more hp than the spacer alone. downside is my cruse control cable wouldnt hook up right i have to work on that. it seems my gas peddal is about an inch closer to me in the cab also. got my tb at a lokal you pull it lot for 15 bucks. cant beat that with a stick.

zq8 dawg....how did you hook up your cruse? im wondering if i am the only one haveing this problem.

all these instals and still no one has taken pics for those of us who dont know whats going on here.....maybe if i bought it i would know...n e ways....

im just wondering if you HAD to remove the TB spacer or you just took it of becasue it didnt do anything. i got the KN and SPACER right now on the stock TB right now and im really looking for a junkyard to get this 58mm tb. does anyone else know if its possible to keep the spacer with the new tb...im thinking it is just because its not longer its just a bigger opening.

does it really make the whistle sound? if so is it like the KN intake and just comes on when you get on it or is it all the time?

[Point]

the spacer will not work because of how the throttle linkage on the new tb is set up. i didnt have my camera with me at the time of purchase and install but i have a friend that will be doing this soon and ill try and take some pics.

tStReNuOuS10......go to the junk yard and see if the clerks can help you find out what the quad four looks like...thats the hardest part.

[rantz and raves]

Quote: Originally Posted by Zq-8_dawg

here are the cruise control cable adjustment instructions


1. With a small flat-bladed tool, carefully pry up on the cruise control cable adjuster to the unlocked position. The toggle lever is natural in color in order to provide a visual aid.

2. Adjust the length of the cruise control cable until there is a clearance of 0.0-1.0 mm (0.0-0.04 in) between the cruise control cable and the accelerator cable throttle lever cams.

3. Carefully squeeze the cruise control cable adjuster down to the locked position.

i was told that when i took the stock radio out of my 98 2.2 'noma that the cruise control wouldn't work and when i did it the cruise control didnt' work... but now that i think about it, i never used cruise control EVER.... so do i still need to hook up this wire for this mod?

[97s-dime4.3]

Quote: Originally Posted by rantz and raves

i was told that when i took the stock radio out of my 98 2.2 'noma that the cruise control wouldn't work and when i did it the cruise control didnt' work... but now that i think about it, i never used cruise control EVER.... so do i still need to hook up this wire for this mod?

What up rantz, No not if you don't plan on useing cruise no need to go through all that.

[rantz and raves]

Quote: Originally Posted by 97s-dime4.3

What up rantz, No not if you don't plan on useing cruise no need to go through all that.

thanks jayton, but unfortunately my master cylinder just went out today on my way home and now my brake pedal is like almost all the way to the floor... so that sucks A LOT... so yea it's fun to try and drive faster and all, but not if you cant stop...

[2.2L Sonoma]

Since this IS the throttle body STICKY im not going to start another one of the TB threads...but i have a question...are there any similarities between the TB off a late model cavalier 2.4 DOHC motor? I was looking at my buddies in his 99 cavalier and it looked similar to mine...does anyone know the specs on that TB? as in size, hookup, etc?

Thanks,
A.J.

[Stinky]

Quote: Originally Posted by 2.2L Sonoma

Since this IS the throttle body STICKY im not going to start another one of the TB threads...but i have a question...are there any similarities between the TB off a late model cavalier 2.4 DOHC motor? I was looking at my buddies in his 99 cavalier and it looked similar to mine...does anyone know the specs on that TB? as in size, hookup, etc?

Thanks,
A.J.

The 2.4 uses one that is the same size as the 2.2 i believe.