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ls1 lt1 tranny the same?

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Old May 14, 2003 | 08:28 PM
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Default ls1 lt1 tranny the same?

i have a 95 t/a with auto and have been thinking about a conversion to 6 speed. would a ls1 t56 fit?
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Old May 15, 2003 | 10:39 PM
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Default Re: ls1 lt1 tranny the same?

I think you can do it...but you'll need all parts from the later car. The big question is if you can get a flywheel that will let you put an ls1 clutch on an lt1....check with Centerforce for an adapter flywheel (not sure if the stock one will work or not). I suspect this may be possible, but it may be a lot of work.

My reasoning behind this statement is:

1.we know the whole drivetrain will swap, so it will fit the chassis.

2.we know that the bellhousing bolt pattern is the same (to bolt to the motor).

3.we know that the driveshaft, shifter, console etc will fit.

4.we may need to get hydraulics to clear the exhaust (not sure on that part).

5.we know that the pedals will fit (same chassis).

6.that leaves the flywheel and clutch, the LT1 version won't work. and I'm not sure about flywheel bolt patterns, clutch spacing etc.

I'd suspect it is possible....but it may still be expensive....

Just my thoughts....
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Old May 16, 2003 | 07:34 AM
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Default Re: ls1 lt1 tranny the same?

why not just find an lt1 6 speed.. that will most definitely work.
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Old May 16, 2003 | 10:53 AM
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Default Re: ls1 lt1 tranny the same?

the ls1 trainy is a lot stronger than the lt1 du to the in put shaft is larger and the gear mesh is closer on the ls1 this is what i have ben told by many competent persons so i pass this info over to you but the input shaft size differnce was in GM High Tech in a artical
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Old May 17, 2003 | 08:26 PM
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Default Re: ls1 lt1 tranny the same?

It will not fit. Don't even try.
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Old May 17, 2003 | 08:32 PM
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Default Re: ls1 lt1 tranny the same?

the ls1 trainy is a lot stronger than the lt1 du to the in put shaft is larger and the gear mesh is closer on the ls1 this is what i have ben told by many competent persons so i pass this info over to you but the input shaft size differnce was in GM High Tech in a artical
Don't beleive that ****. The lt1 cars have ALOT less problems with their T56's than ls1 cars. I personally think it has to do with the hydraulics more than anything else, but it's a fact. I beleive the major difference in on the lt1 and ls1 t56's is just the input shaft and the bellhousing. You can make either of them work. It has been done before.
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Old May 18, 2003 | 05:24 PM
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Default Re: ls1 lt1 tranny the same?

I believe the input shaft is longer on the LS1 than LT1, or vice-versa. All I know is it wont fit. So find yourself 1 for your motor.
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Old May 18, 2003 | 10:21 PM
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Default Re: ls1 lt1 tranny the same?

He's right...the bellhousing to motor (and input shaft) is a different length than the LS1....I forgot to mention that.
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