loud thump when car shifts from 1st to 2nd
Thread Starter
Junior Member
Joined: Oct 2011
Posts: 16
Likes: 0
From: Boca Raton, FL
Car: 1987 Iroc-Z
Engine: 5.7
loud thump when car shifts from 1st to 2nd
I'm looking at buying a 1987 5.7lt automatic iroc with 16000 miles on it. When I took it for a test drive it's shifting very hard and there was a loud thump or knock that came from under the car. It sounded like it came from the transmission. The guy selling it said he thinks there is a shift kit added but wasn't sure. I was thinking it was the trans mount but wanted some other peoples thought on it before I buy the car and end up replacing a lot more than just the trans mount. Thanks for any help you can be.
Senior Member
Joined: May 2006
Posts: 581
Likes: 0
From: NY
Car: 00 SSEi / 94 C4
Engine: 231 / 383
Transmission: 4T65E / ZF 6sp
Axle/Gears: 2.93 / Dana 44 3:45
Re: loud thump when car shifts from 1st to 2nd
As above. classic cheap rubber mount... Get a poly... About the same price
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