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-   -   To use a solid rear trans mount ? (https://classracer.com/classforum/showthread.php?t=11690)

Tim H 07-05-2008 04:46 PM

To use a solid rear trans mount ?
 
Some advice would be appreciated. My car will be using an alum front plate, .090 steel midplate and I have read in the TCI catalogue "never use a solid trans mount". Engine is BB Chev and trans is TH 400.
Chassis is round tube and car has certified (to 8.50) cage .

jmarkaudio 07-05-2008 07:53 PM

Re: To use a solid rear trans mount ?
 
That is good advice, NEVER. A sure way to break a case.

1968chevelle 07-06-2008 09:05 AM

Re: To use a solid rear trans mount ?
 
Quote:

Originally Posted by jmarkaudio (Post 74589)
That is good advice, NEVER. A sure way to break a case.


I couldnt agree more....

Tim H 07-06-2008 01:39 PM

Re: To use a solid rear trans mount ?
 
Ok , well I will stay away from the solid steel Moroso mount for sure. Thanks guys.

bobby 07-10-2008 01:26 PM

Re: To use a solid rear trans mount ?
 
that's funny you started this thread. When we got my wifes 71 camaro bracket car it had one. took it off and just put on a stock rubber one. Was trying to sell the solid one, got tired of kicking it around the garage and threw it away on sunday.

Mike Pearson 07-10-2008 02:23 PM

Re: To use a solid rear trans mount ?
 
Never had a problem with solid mounted trans. Solid mounted engine and solid mounted trans in my car. No issues.

dak 07-10-2008 09:22 PM

Re: To use a solid rear trans mount ?
 
Motor plate. thin alum mid plate and a solid trans mount. never had a problem. In my car the cross member is non removable. You could probably pick the car up from the cross member as it is set through the tubes and welded inside and outside. not just butted up against and welded up

good luck

H.A.A.C. Racing 08-01-2008 11:44 PM

Re: To use a solid rear trans mount ?
 
I have always heard to never mount tail shaft solid...............but I have to tell you, I have no idea why. I would think that if everything is mounted as solid as a rock, but then you have the tail shaft just bouncing around, that would cause breakage. I am sure chassis flex has alot to do with it, anyway, i have had everything solid mounted on my car forever with no problem.

Raceready 10-02-2008 10:47 AM

Re: To use a solid rear trans mount ?
 
My car weighs 3330 lbs,turbo 400,pontiac engine front plate, mid plate,crossmember is round tube bolt in,tailshaft is bolted straight to the crossmember.2X3 Chassis 4 link a arm car.No issues in 8 years running 6.70 1/8 mile 10.70 1/4 mile 60 ft 1.38.If the car don't twist shouldn't have a problem.

Mitch Perkins 11-08-2008 02:55 AM

Re: To use a solid rear trans mount ?
 
We use the urethane mounts on every car built in the shop. With 1/4" front and mid-plates, or with the .090" mid-plates ( which I consider obsolete, 1/4" mid-plate helps to transfer torque to the chassis and the thin steel plates distort). Never had issues with breakage, However, the ones built with solid mounts at the least cracked the mounting bosses on the case even if the housing survived.


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