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

T5 tailshaft leak

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Old Jun 22, 2017 | 05:22 PM
  #1  
shaynecastongua's Avatar
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From: AL
Car: 1985 Trans Am
Engine: Chevy 355
Transmission: T5 NWC
Axle/Gears: 3.23
T5 tailshaft leak

I have a T5 out of an 84' Camaro (Non WC) that I plan on putting into my Trans Am this weekend. I sealed the transmission up, and filled it up with fluid. it was tilted backward so fluid started gushing out of the driveshaft cavity in the tailshaft housing. I looked inside and it appears there is no seal, or at least I can't see one. Is the driveshaft itself responsible for interfacing with the seal at the very back end of the tailshaft housing? There is a seal there, but I'm wondering if there should be another one between the tailshaft and the rest of the tranny.
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Old Jun 22, 2017 | 09:09 PM
  #2  
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jmd
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From: Aridzona
Car: `86 SS / `87 SS
Engine: L69 w/ TPI on top / 305 4bbl
Transmission: `95 T56 \ `88 200-4R
Re: T5 tailshaft leak

Pretty normal yoke, seal, etc. : https://www.youtube.com/watch?v=O8zYcBpP9xU

The yoke may have a plug tapped in the middle under the u-joint.
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Old Jun 22, 2017 | 10:42 PM
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From: Lincoln, NE.
Car: '87 IROC
Engine: 5.7 Vortec w/ factory TPI
Transmission: WC T-5
Axle/Gears: 3.45 Posi
Re: T5 tailshaft leak

If the driveshaft wasn't installed then yes fluid is going to come out the tail shaft. The only seal I know of it the one the goes around the yoke when its installed.
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Old Jun 23, 2017 | 08:22 AM
  #4  
midias's Avatar
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From: Henrietta NY
Car: 1984 Trans Am L69
Engine: Sniper EFI Powered 355
Transmission: WC T5 w/ Steel Support Plate
Axle/Gears: 3.42 10 Bolt Posi
Re: T5 tailshaft leak

Yyup what they said is true also it may help to know that you can fill it easy through the shifter hole before it is installed.
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Old Jun 24, 2017 | 01:29 PM
  #5  
shaynecastongua's Avatar
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From: AL
Car: 1985 Trans Am
Engine: Chevy 355
Transmission: T5 NWC
Axle/Gears: 3.23
Re: T5 tailshaft leak

Thanks guys! I thought I was missing a seal and would have to pull the whole thing apart again, phew.
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