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1981 Pontiac Firebird delay in rear end engagment

Tiny
SORDOFCONAN
  • MEMBER
  • 1981 PONTIAC FIREBIRD
Drive Train Axles Bearings problem
1981 Pontiac Firebird V8 Two Wheel Drive Automatic

after having the transmission rebuilt by a local very good mechanic for a broken orbital gear and replacing both u-joints my car still has a 1 second delay after you shift from either P or N with a clunk as the rear engages, I have to replace a axel shaft seal so while I have it apart what should I look for to cure this dilemma, the auto parts guy says I need to adjust the pinion, not sure what he means, with shims? The tranny is a 350. Thank you for any help
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Wednesday, July 29th, 2009 AT 3:12 PM

1 Reply

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
HI there,

what he is talking about is the pinion back lash, not this is a critical setting if you get it wrong you will destroy the diff, I would get a mechanic to set this up for you.

Mark (mhpautos)
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Wednesday, July 29th, 2009 AT 11:39 PM

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