What is this
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Joined: Jul 2001
Posts: 3,204
Likes: 7
From: New Boston, IL, USA
Car: '90 Formula 350
Engine: 383 SBC
Transmission: ProBuilt S/S 700-R4 & ACT 9" Stall
Axle/Gears: 10 bolt 3.23
Re: What is this
There are different types so take the whole thing into the parts store to match it up with the replacement.
Thread Starter
Junior Member
Joined: Sep 2012
Posts: 38
Likes: 0
From: Detroit, MI
Car: 1988 Black GTA
Engine: 305 TPI
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Joined: May 2005
Posts: 2,220
Likes: 68
From: Atlanta
Car: '02 T/A WS6, '91 T/A, '91 Camaro RS
Engine: LS1, LB9, L03
Transmission: T56, 700R4, 700R4
Axle/Gears: 4.10 10 bolt, 2.73 10 bolts
Re: What is this
I'd recommend getting a polyurethane replacement -- it doesn't hurt ride quality, and they're a LOT stronger than the factory rubber.
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Joined: Dec 1999
Posts: 5,964
Likes: 37
From: Hacienda Heights, CA
Car: 90 RS 'Vert, 88 IROC-Z, 88 Firebird
Engine: 305 ci tbi, 305 ci tpi, 350 ci tpi
Transmission: WC-T5, WC-T5, 700R4
Axle/Gears: 3.45, 3.27, 3.27
Re: What is this
You WILL need to drill the holes in the tranny crossmember larger to accomodate the bolts to mount the poly tranny mount though.
Lon
Lon
Thread Starter
Junior Member
Joined: Sep 2012
Posts: 38
Likes: 0
From: Detroit, MI
Car: 1988 Black GTA
Engine: 305 TPI





