To use a solid rear trans mount ?

Tim H · 07-05-2008, 04:46 PM

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

That is good advice, NEVER. A sure way to break a case.

1968chevelle · 07-06-2008, 09:05 AM

Quote:

Originally Posted by jmarkaudio

That is good advice, NEVER. A sure way to break a case.

I couldnt agree more....

Tim H · 07-06-2008, 01:39 PM

Ok , well I will stay away from the solid steel Moroso mount for sure. Thanks guys.

bobby · 07-10-2008, 01:26 PM

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

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

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

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

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

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.

07-05-2008, 04:46 PM	#1
Tim H VIP Member Join Date: Jan 2007 Posts: 1,040 Likes: 1,068 Liked 481 Times in 158 Posts	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 .

07-05-2008, 07:53 PM	#2
jmarkaudio Junior Member Join Date: Apr 2008 Posts: 83 Likes: 0 Liked 0 Times in 0 Posts	Re: To use a solid rear trans mount ? That is good advice, NEVER. A sure way to break a case.

07-06-2008, 01:39 PM	#4
Tim H VIP Member Join Date: Jan 2007 Posts: 1,040 Likes: 1,068 Liked 481 Times in 158 Posts	Re: To use a solid rear trans mount ? Ok , well I will stay away from the solid steel Moroso mount for sure. Thanks guys.

07-10-2008, 01:26 PM	#5
bobby Member Join Date: Jun 2008 Location: League City, Texas Posts: 243 Likes: 0 Liked 0 Times in 0 Posts	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.

07-10-2008, 02:23 PM	#6
Mike Pearson VIP Member Join Date: Mar 2007 Posts: 2,443 Likes: 613 Liked 1,916 Times in 574 Posts	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. __________________ Mike Pearson 2485 SS

07-10-2008, 09:22 PM	#7
dak Junior Member Join Date: Mar 2003 Location: west coast Posts: 26 Likes: 0 Liked 0 Times in 0 Posts	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

08-01-2008, 11:44 PM	#8
H.A.A.C. Racing Member Join Date: Aug 2007 Posts: 320 Likes: 0 Liked 0 Times in 0 Posts	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.

10-02-2008, 10:47 AM	#9
Raceready Junior Member Join Date: Mar 2004 Posts: 34 Likes: 0 Liked 0 Times in 0 Posts	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.

11-08-2008, 02:55 AM	#10
Mitch Perkins Junior Member Join Date: Feb 2007 Location: Wetumpka Alabama Posts: 23 Likes: 0 Liked 0 Times in 0 Posts	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. __________________ Mitch Perkins Perk-Bilt Race Cars DragCoverage.com Staff Photographer