Transmissions and Drivetrain Need help with your trans? Problems with your axle?

t5 from 93-97 v6 into a 86 v8 swap???

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Old Apr 9, 2009 | 08:57 AM
  #1  
toy4x4's Avatar
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From: VA
Car: 86 IROC Z28
Engine: 305 TPI
Transmission: 94-T56 6speed
t5 from 93-97 v6 into a 86 v8 swap???

I have been trying to gather info on the v6 t-5 93+ model years. Will it bolt up to a 3rdgen v8. So far I have found in the t5 article that the 93 t5 has a longer input shaft. I think it also has a 26 spline shaft though. If the shaft is longer can it be cut off and if so has anyone done this succesfully? Is there an aftermarket spacer for the bellhousing availiable?

I know I read somewhere that the 3rdgen v6 t5 had a longer input shaft also but was a 14 spline. I also found a thread where someone cut this shaft off and used it behind a 3rdgen v8.

I have a 86 Iroc 305. I had a 93 t56 in it but it is broken I found a 94 3.4 v6 t5 for $100 clutch and bellhousing. I have a v8 t5 angle bellhousing. Just need to fix my car temporary. Can it be done?

What I know:

V6 t5 bellhousing is different block to bellhousing bolt pattern.
V6 t5 has longer inputshaft?
v6 t5 has different gearing not perferred for a v8.
v6 t5 is supposedly weaker than a v8 t5
t5 is weak piece of junk
t56 is best solution

Picture of the shafts that I found v6 on left v8 on right. https://www.thirdgen.org/forums/atta...e-dsc01094.jpg
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Old Apr 9, 2009 | 11:02 AM
  #2  
toy4x4's Avatar
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Joined: Apr 2009
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From: VA
Car: 86 IROC Z28
Engine: 305 TPI
Transmission: 94-T56 6speed
Re: t5 from 93-97 v6 into a 86 v8 swap???

Okay I found this tad bit that shoots my swap in the foot.

’93 and newer GM WC T-5 use the Ford case and bolt pattern, so these will not bolt up to standard Chevy bellhousings.
and
the ’93-95 F-body V6 cars got a Ford case with a GM input shaft. There were no V8 T-5 during these years.
http://www.jalopyjournal.com/forum/s...d.php?t=171291

Can anyone confirm this?

Would I be better off to find a mustang WC V8 T5 and use some bellhousing adapter?
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Old Apr 9, 2009 | 11:25 PM
  #3  
squirted1's Avatar
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Joined: Sep 2007
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From: mesa, arizona
Car: 84 Trans Am
Engine: 383
Transmission: Tremec TKO
Axle/Gears: 10 bolt 3.73 lsd
Re: t5 from 93-97 v6 into a 86 v8 swap???

its true, the 4th gen t5 used the ford bolt pattern case, and only available with the v6. the v8 trans is the t56. the mustang trans has a very different tailshaft housing and shifter, and does not have a torque arm provision
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