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t5 and lt1..does it fit?

Old Apr 29, 2003 | 03:49 AM
  #1  
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t5 and lt1..does it fit?

i searched the threads, seems everyone either uses the 700r4, 4l60, or a t56..will my t5 fit the lt1? i have been thinking about doing many engine swaps..and put off the lt1 swap..but the more i think bout it, the better it looks..so..anyone know if my t5 bolts to the lt1 and works with the computer n such..thanks
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Old Apr 29, 2003 | 04:51 AM
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well, i answered my own question with a lot more searching...guess it will fit
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Old Apr 29, 2003 | 04:52 AM
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actually...i still dont know if the lt1 computer needs to be attached to the t5 or not
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Old Apr 29, 2003 | 08:19 AM
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From: Chicago, Il
Car: 1987 Trans Am
Engine: Lt1
Transmission: T56
Yes, you can use the t5. It won't last long at all if you plan on having fun with the lt1 though. The only thing that really needs to be hooked up from the trans to the Lt1 PCM is the VSS.
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Old Apr 29, 2003 | 09:38 AM
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From: NJ
Car: 87 vert
Engine: LT1
Transmission: T5
I'm running the lt1 w/t5 and do not have anything hook up to it(other then the reverse light harness). The T5 bellhousing installed like any other GM 350. I'm running the roc for 2 months w/o issues.
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Old Apr 29, 2003 | 10:04 AM
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Car: '92 RS
Originally posted by Trans Am#5
Yes, you can use the t5. It won't last long at all if you plan on having fun with the lt1 though. The only thing that really needs to be hooked up from the trans to the Lt1 PCM is the VSS.

60K miles with a LOT or racing isn't a long time?
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Old Apr 29, 2003 | 10:23 AM
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From: SE Michigan
Car: Bright Red 91 GTA
Engine: CARBED LT4
Transmission: MK6
thats what i was gonna say...

i know many guys at or over 400 horse with t-5's that beat the **** of them, and it never misses a beat..

look at texas lt1's trap speed..109! thats 400 right there
shock kills the t-5 not torque


the lt1 flywheel IIRC is the same as a sbc one..

i beleive you can swap them to..
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Old Apr 29, 2003 | 10:35 AM
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From: SE Michigan
Car: Bright Red 91 GTA
Engine: CARBED LT4
Transmission: MK6
i was gonna say the same thing

i know many guys with 400+ and they beat the **** out of it everyday. and it never misses a beat...

look at texas lt1's trap speed 109! thats 400 right there,

shock kills the t-5 not torque

IIRC the lt1 and SBC flywheel are interchangable..u can use a t-5 with lt1 flywheel.. and i think u can use a sbc flywheel on a lt1
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Old Apr 29, 2003 | 11:15 AM
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From: NJ
Car: 87 vert
Engine: LT1
Transmission: T5
f-crazy, your right - you can use a sbc flywheel on a lt1(that's my set up). Accept I'm using the LT1 starter(lighter and allows from room between the LT1 and headers)
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Old Apr 29, 2003 | 11:59 PM
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so i will be able to use the flywheel off of my 305 tbi? (i would like to..its only 3 months old..eh)
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Old Apr 30, 2003 | 08:22 AM
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From: Chicago, Il
Car: 1987 Trans Am
Engine: Lt1
Transmission: T56
I only had one 3rd gen with a 5 speed and it was a 350 TBI. The trans never actually went bad....it did however get pretty beat up after 2 years of daily driving and summer weekends at the track. It was like putting a stick in heavy mud and trying to move it around. Needed a rebuild. If it will last with no problems, then I apologize...Good luck.
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Old Apr 30, 2003 | 11:33 AM
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From: Columbus, OH
305 flywheel

No. I dont think that your 305 flywheel will work with your older engine (The 305 flywheel mounting hole is smaller). Unless you are using a newer model crank in your 350. You may need a flywheel off of a pre 85 305 that will have a mounting hole of about 2.5" to match your older crank. You will have to buy new. They are not in plentiful supply at junkyards anymore (i spend two weeks and finally bought a new one for the price of what a junk one was selling at)
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Old Apr 30, 2003 | 11:35 AM
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From: Columbus, OH
305 flywheel

my bad, i was thinking about another thread, it may fit.
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Old Apr 30, 2003 | 03:46 PM
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From: Angleton, TX
Car: '92 RS
yes, a 305 flywheel will work, thats what I'm using. no problems bolting it up or anything. I probably need a new one though since I've had mine resurfaced quite a few times from ****ty clutches glazing them.
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