LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

T56 help.

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Old Apr 24, 2021 | 03:06 PM
  #1  
Stocktransam's Avatar
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T56 help.

So I’m new here and I just picked up a 97 trans am with an lt1 and a t56. The trans is on its way out and I’m going to just replace it (no it’s not for sale as I’m going to rebuild it at a later date). I’m picking up a viper t56, not an f body trans built to viper spec but one straight out of a viper. Has an adapter plate with a t5 bell housing and clutch setup. Was bolted to an sbc in a 3rd gen. My question is will there be any interference with the t5 slave on this application? Pics of trans attached



Old Apr 25, 2021 | 07:33 AM
  #2  
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Re: T56 help.

What do you mean by “the trans is on its way out”? I’m thinking it probably just needs a clutch.

Anyway: just use the bellhousing and slave from yours.

Last edited by JakeRobb; Apr 25, 2021 at 07:35 AM.
Old Apr 25, 2021 | 10:11 AM
  #3  
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Re: T56 help.

JakeRobb the trans is making a ton of noise. It pops out of reverse and it keeps eating pilot bushings. The second I got the car home I put a brand new clutch flywheel and pressure plate since it was slipping on the drive home. Also I’m pretty sure I can’t just bolt my bell housing to it since I have an lt1 and it uses a clutch fork and a pull style pressure plate.
Old Apr 25, 2021 | 11:46 AM
  #4  
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Re: T56 help.

As I recall (and yes, my memory is fuzzy - could be wrong), the main difference with the early Viper T56 and the F-Body T56 were a longer input shaft, different pilot bearing diameter, beefier output shaft, steel 3-4 fork, carbon fiber blocker rings, different shifter location, different VSS type. In early Viper years the gears were the same (except 2nd), including ratios. Not sure what the advantage is in having to adapt the Viper version to the F-Body, other than a possible low cost for the Viper trans..

Is this an unusually high HP build? My stock T56 gave up as flywheel HP approached 800. Buddy of mine had similar experience. In both cases I sold the T56's for reduced $$$, and the people that bought them didn't have to put a lot of $$$ into them for a rebuild.
Old Apr 26, 2021 | 06:32 AM
  #5  
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Re: T56 help.

It’s not a high hp build. It’s my daily. I just can’t afford fo it to be down for more than a day, and no one has an lt trans local since everyone converted them to ls
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