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

T5 input shaft swap

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Old Sep 24, 2017 | 08:20 PM
  #1  
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Car: 1989 Iroc rebuild
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Transmission: 5spd
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T5 input shaft swap

my original lb9 iroc with 3.08 rear gear,t5 eat itself,cant find replacement locally or affordable but do have access to t5 from 1989 2.8 v6,can i just use my input shaft from my 1352-176 (i know references show from a L03)into this v6 trans since i am in bad spot to just get the car going,since it is 80 miles from home
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Old Sep 24, 2017 | 09:30 PM
  #2  
hwcoll95's Avatar
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From: middle TENNESSEE
Car: 1989 Iroc rebuild
Engine: 355 carb'd
Transmission: 5spd
Axle/Gears: 3:08 pos for a while
Re: T5 input shaft swap

has anybody tried to find a T5 for a 3rd gen v8 car lately?i broke mine 80 miles from the house and had it towed to a friends,getting desperate to get something in it to bring her home,found a 89 T5 from a 2.8 car,condition unknown,can just input shaft be changed from my eaten one?brand new clutch,flywheel,pressure plate and was on a clutch break in when she was cruising in 5th,clunked and that was it.
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Old Sep 25, 2017 | 05:34 AM
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Re: T5 input shaft swap

No.

Clutch gear and countergear would both have to be changed.

Might be quicker, cheeeeeeper, eeeeeeeeeezyer, and otherwise more satisfactory, to just leave the 6-cyl one alone; and swap the clutch disc to a (I think this is the one) 4.3 Astro van one.
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Old Sep 25, 2017 | 07:00 AM
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Re: T5 input shaft swap

I'm pretty sure that the input shaft on the V6 transmission is too long for a V8.


You can not swap the input gear because all of the gear ratios are different in the V6 transmission. You would have to change ever gear in the transmission.
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Old Sep 25, 2017 | 10:40 PM
  #5  
hwcoll95's Avatar
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From: middle TENNESSEE
Car: 1989 Iroc rebuild
Engine: 355 carb'd
Transmission: 5spd
Axle/Gears: 3:08 pos for a while
Re: T5 input shaft swap

because of time and money,i just get the v6 trans,swap out the clutch disc,checking on the astro van disc and should be a plug and play,isnt it?
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Old Sep 26, 2017 | 06:46 AM
  #6  
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Re: T5 input shaft swap

Not if the input shaft is longer. I don't know about the Camaro V6, but the 2.8 S10 V6 T5 has a longer input shaft.
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Old Sep 26, 2017 | 11:42 AM
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Re: T5 input shaft swap

The maindrive gear teeth and teeth on the countershaft are different counts. So are the other teeth for the countershaft and speed gears 1-3.

If it is a legit WC V8 T5, and hasn't elongated the front of the case, fix it.

​​​​​​Driving a V6 ratio T5 is miserable in comparison.
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