T56 on 2.8i
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From: surrey b.c. canada
Car: 89 Iroc
Engine: lb9
Transmission: wc t-5
Axle/Gears: 10 bolt 3.08 posi
its a complete waste fo time to do, if you want a standard sell the t-56 and buy a t-5, the 2.8l doesn't make enough torque to use the 6th gear
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From: Denmark
Car: 2x Camaro 2.8i '87/89
Engine: 2.8i MPFi
Transmission: TH700R4
...
Kretos: True, a stock V6 won't be able to have any torque. But my V6 wont be stock for much longer, have already bought for 3k worth of tuning and expect about 450+hp.
Doward: I don't have one at hand, Sorry, But I'm Buying a T56 if it's possible to mount
Doward: I don't have one at hand, Sorry, But I'm Buying a T56 if it's possible to mount
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From: Mays Landing NJ
Car: 2018 Camaro SS
Engine: LT1 w/Paxton 1500SL
Originally posted by kretos
if you don't mind me asking, how do expect to get that much horsepower out of a 2.8 ltr
if you don't mind me asking, how do expect to get that much horsepower out of a 2.8 ltr
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From: Gainesville, FL
Car: 1988 Chevy Camaro Hardtop
Engine: Turbocharged/Intercooled 3.1
Transmission: World Class T5 5 Speed
Sure it would - If I had $3k, I'd build a boosted, 8.6:1 aluminum headed T61 3.1 V6 
Course, I don't have $3k right now.
I will say you'll be able to buy about 220rwhp for under $3k here soon. (damn rain! Tuning is ALMOST done. Going to do more dataloggin' now!)

Course, I don't have $3k right now.
I will say you'll be able to buy about 220rwhp for under $3k here soon. (damn rain! Tuning is ALMOST done. Going to do more dataloggin' now!)
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Joined: Jan 2004
Posts: 14
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From: Denmark
Car: 2x Camaro 2.8i '87/89
Engine: 2.8i MPFi
Transmission: TH700R4
most of the 3k$ is just the Turbo's and Intercooler...
AEM ECM, other pistons, misc. gaskets, injectors, gearbox has to be bought (just mentioning the most difficult and expensive things)
AEM ECM has to be bought before I can show any results, at all.
And it's second in line, first i want something that will make the wheels spin again, cause my 700r4 has burnt 3-4 gear...
AEM ECM, other pistons, misc. gaskets, injectors, gearbox has to be bought (just mentioning the most difficult and expensive things)
AEM ECM has to be bought before I can show any results, at all.
And it's second in line, first i want something that will make the wheels spin again, cause my 700r4 has burnt 3-4 gear...
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Joined: May 2003
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From: Johnstown, PA.
Car: Chevy Cobalt & Camaro
Engine: 2.2 DOHC/3.1
Transmission: Not so slushy slush box/Slush Box
Axle/Gears: Stock 3.23
I know if I would spend about 5k-6k i could get my 3.4lt up to about 500 to 600hp. There is this engine shop that can get the 3.4 to as much as 300hp just on building it and if I got it boosted I am sure I could reach 500 to 600hp
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From: Staunton,illinois
Car: 1966 impala , 1998 sebring vert,1978 buick regal turbo, 1991 chevy silverado 3/4ton 4x4 lifted
Engine: 283, 2.5,3.8 turbo 350
Transmission: powerglide,auto overdrive, th350,4L80
Re: ...
Originally posted by CamaroDudeDK
Kretos: True, a stock V6 won't be able to have any torque. But my V6 wont be stock for much longer, have already bought for 3k worth of tuning and expect about 450+hp.
Doward: I don't have one at hand, Sorry, But I'm Buying a T56 if it's possible to mount
Kretos: True, a stock V6 won't be able to have any torque. But my V6 wont be stock for much longer, have already bought for 3k worth of tuning and expect about 450+hp.
Doward: I don't have one at hand, Sorry, But I'm Buying a T56 if it's possible to mount
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From: Shelby Twp., MI
Car: 84 Z28 / 91 Trans Am
Engine: LS1 / 5.0 TPI
Transmission: T56 / 700R4
Axle/Gears: 4.09 / 2.73
yes you can bolt a t56 to a 60 degree v6. tremec makes an aftermarket gm trans that bolts to the t5 bellhousing. also it comes with the deeper gear ratios, first gear is 2.97 instead of the 2.66. the comment about not having enough torque to turn it is bs unless you plan on keeping the stock rearend gears on a NA car you put a 4.56 or 4.10 in and the trans would work great.
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From: Shelby Twp., MI
Car: 84 Z28 / 91 Trans Am
Engine: LS1 / 5.0 TPI
Transmission: T56 / 700R4
Axle/Gears: 4.09 / 2.73
i have a v8 3rd gen and i also have v6 3rd gen i love them both. but you can make 450 hp reliably in a v6 with a turbo if you know what your doing 300 naturally aspirated. the 500 or 600 it won't be reliable anymore. v8 sound, sure it's better but porsche's sound good for a 6. the v6 setup properly handles better than a v8.
Last edited by TechSmurf; Oct 9, 2004 at 10:39 PM.
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From: Tucson, AZ, USA
Car: '99 Trans Am, '86 Camaro
Engine: LS1, Scrap
Transmission: T56, T5
Axle/Gears: 3.42 Stock ZT, 3.42 Open
I can see right now we're going to have a problem here... which I find truly disheartening. Keep it clean, folks.
I for one am anxiously anticipating someone beating me to the T56 swap... I'm already doing enough pioneering.
I for one am anxiously anticipating someone beating me to the T56 swap... I'm already doing enough pioneering.
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Joined: Apr 2004
Posts: 3,067
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From: Staunton,illinois
Car: 1966 impala , 1998 sebring vert,1978 buick regal turbo, 1991 chevy silverado 3/4ton 4x4 lifted
Engine: 283, 2.5,3.8 turbo 350
Transmission: powerglide,auto overdrive, th350,4L80
i also have a v6 third gen if everyone would look under my name its listed there with the rest of my vehicles im not trying to bash anyone with a v6 on here....
i was just stateing that i didnt think it was possible for someone to get 400 hp out of 2.8 as easily as everyone thinks it is.....
i was just stateing that i didnt think it was possible for someone to get 400 hp out of 2.8 as easily as everyone thinks it is.....
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From: Tucson, AZ, USA
Car: '99 Trans Am, '86 Camaro
Engine: LS1, Scrap
Transmission: T56, T5
Axle/Gears: 3.42 Stock ZT, 3.42 Open
As long as he's replacing his rods and pistons, things should go okay... I've got a distinct lack of faith in the stock rods, tho, having torn down a few rod-chunking 2.8s... le ick.
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From: Staunton,illinois
Car: 1966 impala , 1998 sebring vert,1978 buick regal turbo, 1991 chevy silverado 3/4ton 4x4 lifted
Engine: 283, 2.5,3.8 turbo 350
Transmission: powerglide,auto overdrive, th350,4L80
Originally posted by TechSmurf
As long as he's replacing his rods and pistons, things should go okay... I've got a distinct lack of faith in the stock rods, tho, having torn down a few rod-chunking 2.8s... le ick.
As long as he's replacing his rods and pistons, things should go okay... I've got a distinct lack of faith in the stock rods, tho, having torn down a few rod-chunking 2.8s... le ick.
i know they arent the best engines in the world but when we took the 2.8 out of my brothers car it had 160,000 + miles on it and still ran fine ...LOL of course we were putting a built v8 in it ....but the 2.8 still ran but wasnt in the best shape in the world ....
but yeah he is going to need to put some good money into the internals to keep it together for sure ....
At the rist of getting this thread close, I do want to say my opinion. I am building a 350 with T56 right now and I do like v8's. There is something to be said about american muscle.
At the same time my daily driver is an acura and I have nothing against people with honda's. Performance is performance and will always be. What I hate is neons, wings, and misc. crap.
Having said that. It is always cool to see people trying to achieve hp in other ways than brute force (i.e. more and bigger cylinders). Japanese use turbos (and so do a lot of faster 3rd gens), they also red line engines at as much as 9,000 rpm.
There are two ways to be faster: build more hp, or lighten the car. Now if you can get the same hp with a lighter v6, instead of a v8, I see absolutely nothing wrong with that. And as 6speed already pointed out, v6's handle better because front is not as heavy.
Good luck camarodude. But just to make people take you a little more seriously, sounds like 3k is not nearly enough what you will spend on that engine.
Keep us posted.
At the same time my daily driver is an acura and I have nothing against people with honda's. Performance is performance and will always be. What I hate is neons, wings, and misc. crap.
Having said that. It is always cool to see people trying to achieve hp in other ways than brute force (i.e. more and bigger cylinders). Japanese use turbos (and so do a lot of faster 3rd gens), they also red line engines at as much as 9,000 rpm.
There are two ways to be faster: build more hp, or lighten the car. Now if you can get the same hp with a lighter v6, instead of a v8, I see absolutely nothing wrong with that. And as 6speed already pointed out, v6's handle better because front is not as heavy.
Good luck camarodude. But just to make people take you a little more seriously, sounds like 3k is not nearly enough what you will spend on that engine.
Keep us posted.
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Posts: 8,113
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From: NWOhioToledoArea
Car: 86-FireBird
Engine: -MPFI
Transmission: T5
Axle/Gears: 3:42
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From: NWOhioToledoArea
Car: 86-FireBird
Engine: -MPFI
Transmission: T5
Axle/Gears: 3:42
A bone stock 2.8 can easily take advantage of a t56 when it come to highway speeds. The MPG on the long haul would make it a near 30MPG car.
Ohh and 3rg gens are not muscle cars yet. They are sports cars. And sport cars come with a variety of engines.
maybe in another 20 years you can call them muscle.
Ohh and 3rg gens are not muscle cars yet. They are sports cars. And sport cars come with a variety of engines.
maybe in another 20 years you can call them muscle.
Having owned a 2.8, and now having a T56 against my LT1, I can almost guarentee that there is not enough power in 6th gear unless you really up the gearing. My car barely moves in 6th, and stock cammed LS1s barely moves at all. BTW, I am making 320 ft lbs at 2300RPM. If you throw a T-56 in a 2.8, you won't be going anywhere.
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From: Staunton,illinois
Car: 1966 impala , 1998 sebring vert,1978 buick regal turbo, 1991 chevy silverado 3/4ton 4x4 lifted
Engine: 283, 2.5,3.8 turbo 350
Transmission: powerglide,auto overdrive, th350,4L80
Originally posted by nothingssafe
Having owned a 2.8, and now having a T56 against my LT1, I can almost guarentee that there is not enough power in 6th gear unless you really up the gearing. My car barely moves in 6th, and stock cammed LS1s barely moves at all. BTW, I am making 320 ft lbs at 2300RPM. If you throw a T-56 in a 2.8, you won't be going anywhere.
Having owned a 2.8, and now having a T56 against my LT1, I can almost guarentee that there is not enough power in 6th gear unless you really up the gearing. My car barely moves in 6th, and stock cammed LS1s barely moves at all. BTW, I am making 320 ft lbs at 2300RPM. If you throw a T-56 in a 2.8, you won't be going anywhere.
it is fun to ride in and drive ...LOL
but i dont know if the v6 has enough grunt even built up ....to be able make a t-56 worth it ....
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From: Shelby Twp., MI
Car: 84 Z28 / 91 Trans Am
Engine: LS1 / 5.0 TPI
Transmission: T56 / 700R4
Axle/Gears: 4.09 / 2.73
like i said before use 4.10 or lower rear end gears and the deeper geared t56 with 2.97 1st not 2.66 and .62 not .50 6th gear.
the stock rods are probably not the problem. they will handle power but you need to put good bolts in them and make sure your oiling system and tuning are adequete.
the stock rods are probably not the problem. they will handle power but you need to put good bolts in them and make sure your oiling system and tuning are adequete.
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Joined: Jan 2004
Posts: 14
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From: Denmark
Car: 2x Camaro 2.8i '87/89
Engine: 2.8i MPFi
Transmission: TH700R4
The upgrade
I had only bought 2 Garret M24 turbo's and a intercooler(off a Nissan Skyline R34 GT-R), WHICH costed about 3000$ in mint condition. Now i have a AEM EM15 ECU laying her beside me too. but the "too buy" list is way longer..
Amongst other:
444+ cc Fuel Injectors
Camshaft (custom if needed)
Fuel pump
Pistons
Rods
clutch
rear
Custom valvesprings and other pushrods
and wireing for the AEM ECU which is should have been at top of list
And now I can add a T56 to the list
Then there is suspension and bracking system.
And most things will be installed as i buy them and when i have the time, for testing of effect.
The fact that I live in Denmark does make it a lot harder to get the things. But I have plenty of time for this project
If it's possible to get 350+ hp out of a 4 cylinder '87 GM engine (european market), I know it's possible to make at least 450+ hp with a 2.8l if made probber, not that it's a fair compair a 2.0L with the 2.8L! And if it breaks, I'll just reinforce the weak point. Money is my only worry
I'm definently not doing this for the Gas Milage, and i doesn't expect it to get better, Milage isn't why i want a T56.
I'm not at all expecting this to be an easy project, I've never stated that!
I'm open for suggestions, to make it work better... But no, I'm not putting in a V8 and I'm gonna make sure the 6. gear will be usable at V-Max. but in the begining it might just work as a "overdrive" gear
Amongst other:
444+ cc Fuel Injectors
Camshaft (custom if needed)
Fuel pump
Pistons
Rods
clutch
rear
Custom valvesprings and other pushrods
and wireing for the AEM ECU which is should have been at top of list

And now I can add a T56 to the list
Then there is suspension and bracking system.
And most things will be installed as i buy them and when i have the time, for testing of effect.
The fact that I live in Denmark does make it a lot harder to get the things. But I have plenty of time for this project
If it's possible to get 350+ hp out of a 4 cylinder '87 GM engine (european market), I know it's possible to make at least 450+ hp with a 2.8l if made probber, not that it's a fair compair a 2.0L with the 2.8L! And if it breaks, I'll just reinforce the weak point. Money is my only worry
I'm definently not doing this for the Gas Milage, and i doesn't expect it to get better, Milage isn't why i want a T56.
I'm not at all expecting this to be an easy project, I've never stated that!
I'm open for suggestions, to make it work better... But no, I'm not putting in a V8 and I'm gonna make sure the 6. gear will be usable at V-Max. but in the begining it might just work as a "overdrive" gear
Originally posted by 6SPEED84Z28
yes you can bolt a t56 to a 60 degree v6. tremec makes an aftermarket gm trans that bolts to the t5 bellhousing. also it comes with the deeper gear ratios, first gear is 2.97 instead of the 2.66. the comment about not having enough torque to turn it is bs unless you plan on keeping the stock rearend gears on a NA car you put a 4.56 or 4.10 in and the trans would work great.
yes you can bolt a t56 to a 60 degree v6. tremec makes an aftermarket gm trans that bolts to the t5 bellhousing. also it comes with the deeper gear ratios, first gear is 2.97 instead of the 2.66. the comment about not having enough torque to turn it is bs unless you plan on keeping the stock rearend gears on a NA car you put a 4.56 or 4.10 in and the trans would work great.
Double check on that, because I read about "driveline angle"
issues with an aftermarket T-56. Check the trans. board
and go to Mrdude_1's post.
P.S. I am using a T-56 ( factory) in my thirdgen. Motor
is pushing 350hp/400 ft. lbs. Rear gears are 3.73s.
You should use at least 3.73s to get the thing to turn
up quick! 4.10s would be best in a 1995-1997 T-56,
BUT the gears will break after a while due to the fact that
it's going in a 7.5" 10 bolt rear. The more teeth that are
on the small diameter gear, the weaker it becomes!
You will need a 9" or 12 bolt rear anyways with 400+hp.
Get 4.10s for it, and the T-56 with a 450hp 2.8L is fine!
Just wondering, can a stock block 2.8L hold that much
power? I can't see how. A cast iron 350 2 bolt main block
is capable of only 500hp.
Last edited by Camaro_nut; Oct 30, 2004 at 07:07 PM.
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