Short Urethane Trans Mount?
Thread Starter
Melting Slicks
Joined: Sep 2004
Posts: 2,412
Likes: 3
Short Urethane Trans Mount?
Does anyone make one? I have the Energy Suspension universal poly GM trans mount right now, holding the back of my T56 up. I brought the engine up to about 4K and nailed it, I could hear my trans yoke hitting the tunnel.
Race Director
Joined: Sep 2004
Posts: 11,874
Likes: 263
From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
can you modify it? i had to elongate the holes in the mounting pads for the 700r4 to get the tail shaft area more "centered" in the tunnel , i did this with a round file,and even then i just barely had enough room to get my fingers in there as a measurement of clearance....and you are sure your motor mounts have broken right? i recall some guys saying they had to cut out the fiberglass and remake a section to get the room they needed....
Tech Contributor
Joined: Aug 1999
Posts: 15,154
Likes: 3,959
From: Connecticut, USA
Not sure of the T56 mounting but the ES tranny mount called for Corvette doesn't fit correctly. I addressed this a couple of years ago with ES and they told me the listing for wrong. Corvette and I think soem camaro models were not listed,ALTHOUGH the all the catalogs did list it. Maybe this is the same in your case?
Gary
Gary
Race Director
Joined: Jul 2004
Posts: 12,690
Likes: 329
From: Scottsdale Arizona
Originally Posted by glen242
I found the ES mount to be higher than stock on my '76 w/ST10. Prothane mount is the correct, shorter, height.
Melting Slicks
Joined: Apr 1999
Posts: 2,010
Likes: 3
From: Moon Twp. PA USA
Originally Posted by CA-Legal-Vette
Usefull information. I replaced the mount on my 81 auto with the ES one and it was too high. I'm changing trannys over the holidays and wanted to replace the mount as well. Where did you find the Prothane one?
One problem I had was the Prothane mount comes with studs to attach the mount to the crossmember. Given no torque specs, I tried to use the stock GM specs and I twisted the stud in half. Got the mount out, removed the twisted/broken studs, and went to grade 8 bolts. Mount holes are blind holes, not like the factory through holes. Ideal length for the bolts was some kind of weird length, so I had to cut down some available length bolts.
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