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

T5 5th gear interchangeability

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Old Feb 15, 2018 | 01:08 PM
  #1  
RamIt's Avatar
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From: El Sobrante, California
Car: 1984 z28
Engine: Crate replacement L31R 350
Transmission: T56
Axle/Gears: 7.625" 28 spline 3.23
T5 5th gear interchangeability

I just pulled a worn out T5 1st gen trans out of my ride and replacing it with the second gen t5.
The 1st gen box has the .73 5th and the second gen has the .63.
Are the 5th gears interchangeable?
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Old Feb 16, 2018 | 07:26 AM
  #2  
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Re: T5 5th gear interchangeability

No. Or at least, not completely.

The one that goes on the mainshaft (driven) is the same; but the one that goes on the countergear (drive) is quite a bit different.
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Old Feb 16, 2018 | 09:30 AM
  #3  
RamIt's Avatar
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Member
10 Year Member
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Joined: Jun 2013
Posts: 497
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From: El Sobrante, California
Car: 1984 z28
Engine: Crate replacement L31R 350
Transmission: T56
Axle/Gears: 7.625" 28 spline 3.23
Re: T5 5th gear interchangeability

Thanks Sofa.
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