thump?

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May 23, 2002 | 04:29 PM

Aaron_17

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Joined: May 2002

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thump?

I have a '90 auto firebird, and when i take off fast from standstill, the rear end thumps. Anyone know whats wrong, and how much it would cost to fix?

May 23, 2002 | 04:34 PM

Bluebird

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Joined: Feb 2001

Posts: 422

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From: Rockford,IL, Unitied States

Car: 1991 Pontiac Firebird

Engine: 305

Transmission: 700R

Rearend..

It's probably not the rearend.. its probably your crappy
stock tranny mount.. go to summit racing, or nextgenparts.com and order a polyurethane mount for about 40 bucks