bad size on transmission mount
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Joined: Nov 2019
Posts: 105
Likes: 4
From: Lyon (FRANCE)
Car: FIREBIRD TRANS AM GTA 1987
Engine: 5.7
Transmission: th700
bad size on transmission mount
Hello,I recently bought a transmission mount .... the model was mentioned on the rockauto site... Ok for my firebird trans am GTA 1987, TH700...
https://www.rockauto.com/fr/moreinfo...51414&jsn=1536
but after and the size is not correct, it is not really in line and it impossible to remplace the old mount....
central axis is not at the same distance from the 2 other holes compared to the old mount, that doesn't work .. why ? if someone have the same version of car ... ?
there are the energy suspension that would seem the best, better price, but some persons have problems of vibration with them... I hesite.
https://www.rockauto.com/fr/moreinfo...51414&jsn=1536
but after and the size is not correct, it is not really in line and it impossible to remplace the old mount....
central axis is not at the same distance from the 2 other holes compared to the old mount, that doesn't work .. why ? if someone have the same version of car ... ?
there are the energy suspension that would seem the best, better price, but some persons have problems of vibration with them... I hesite.
Joined: Mar 2017
Posts: 4,255
Likes: 427
From: Portland, OR
Car: 86 Imponte Ruiner 450GT, 91 Formula
Engine: 350 Vortec, FIRST TPI, 325 RWHP
Transmission: 700R4 3000 stall.
Axle/Gears: 9 Bolt Torsen 3.70
Re: bad size on transmission mount
Energy, Prothane, etc. I have never noticed any vibration difference. It's a sports car - who cares anyway?
GD
GD
Thread Starter
Member


Joined: Nov 2019
Posts: 105
Likes: 4
From: Lyon (FRANCE)
Car: FIREBIRD TRANS AM GTA 1987
Engine: 5.7
Transmission: th700
Supreme Member




Joined: Sep 1999
Posts: 3,047
Likes: 826
From: Colorado USA
Car: '83 Firebird (T/A Clone)
Engine: 350 with L-69 components
Transmission: 700R-4, 2000 RPM stall converter
Axle/Gears: 10-bolt/3.73 ..
Re: bad size on transmission mount
I got mine from NAPA. Fit perfectly...
Joined: Aug 2006
Posts: 12,812
Likes: 110
From: Central NJ
Car: 86 Trans Am
Engine: 408 stroker sbc
Transmission: TKO600
Axle/Gears: Moser full floater m9, 3:70 trutrac
Re: bad size on transmission mount
The pictured part is wrong, there are a couple oddball mounts these cars used, part of a 2pc mount and a hydraulic mount. Search a later year and you should find a proper fitting piece.
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Gladstoneiroc
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Feb 27, 2005 08:53 PM





