poly mount opinions please
poly mount opinions please I'v got the motor and tranny out of my 1993 TA right now. I'm doing a bunch of stuff to it and was wondering what you guys think od polythane mounts. Do they make much of a difference? I can get all the mounts in a polythane kit from summit for 100 but just dont know if its worth it. Any info is appreciated. thanks!
I know they are a lot stiffer than rubber but not as stiff as solid mounts 
...I just installed mine on my k-member but haven't put the car back together yet so I can't really give you any feedback but I can tell you that the same kit is 75 bucks at byunspeed
...I just installed mine on my k-member but haven't put the car back together yet so I can't really give you any feedback but I can tell you that the same kit is 75 bucks at byunspeed 
Staging Lane
Joined: Jul 2008
Posts: 81
Likes: 0
the stock rubber mounts have a lot of give and they rot the fastest. but they probably woundn't rot before the end of the lifetime of the car. polys are stronger and last longer, less give. you've heard of poly bushings for your swaybars right? they are much better than the stock rubber ones or whatever they come with. in general poly is better than the stock mounts.
I don't feel any more vibrations then i did when they were stock. I have poly engine and trans mounts. Car has 155,000 on it so i know the stock ones weren't in the best shape either.
well the only thing I notice is when I rev the engine the whole car shakes buts that normal. Any vibrations are most noticeable during the first couple hundred miles after that it should be smooth...Imo.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo 
. Probubly should switch them out but it's a PITA and its getting a v8 out of one of my old 1991 rs camaro 
TECH Senior Member
iTrader: (3)
Joined: Oct 2006
Posts: 7,564
Likes: 4
From: Decatur, TN (N-W of Athens)
In Camaros there's a bit of a problem with (at least Energy Suspension's) the trans mount, that it needs a spacer or some such. They've since corrected it (as of about late summer of 08). I ran a Energy poly trans mount in my 91 Formula and it was nice. Apparently the LS ones are the same internal design as Energy's with the locking metal plates that only allow flex so far, but the price of the Poly vs LS is so minimal. I know TPiS sells Energy stuff for dirt cheap. They're a sponsor too.
i have the motor mounts i got them for x-mas so there not on the car yet but i have had the trans mount on the car for a year, with the trans mount you can feel a lot more vibration with it
TECH Senior Member
iTrader: (3)
Joined: Oct 2006
Posts: 7,564
Likes: 4
From: Decatur, TN (N-W of Athens)
BTW here's TPiS' price, and while I haven't shopped around, I know it to be pretty darn good heh
800-074 Bushings, Tranny Mount 85-98........$25.00
800-074 Bushings, Tranny Mount 85-98........$25.00
I think it has something to do with having stock motor and poly trans mount. The engine moves alot more than it would with poly mounts and transfers all vibrations through the trans.
TECH Senior Member
iTrader: (3)
Joined: Oct 2006
Posts: 7,564
Likes: 4
From: Decatur, TN (N-W of Athens)
You need to shim them to fix the vibration problem. And why it's Camaro and not Firebird, I don't really recall, but it's a 4th Gen Camaro specific issue. not disagreeing. but that doesn't make sense 4th gen camaro and firebird share everything but exterior panels and interior design.
TECH Senior Member
iTrader: (3)
Joined: Oct 2006
Posts: 7,564
Likes: 4
From: Decatur, TN (N-W of Athens)
The original threads with all the information were deleted since Energy isn't a sponsor, but here's the only bit of info I can provide (which can actually aid this thread now that I re-read it!)
Hey Clint,
I guess the forum wants me to be a paying sponsor in order to get information. I was just trying to get info for the mount but at the same time give away some cool product. Oh well, they spoiled it for everyone.
Well I got in an automatic 01 camaro ss and it didn't like us and ran poorly. We traded that for an 02 WS6 6 speed and got a lot of the critical information.
My boss is pulling the plug on this project because we found out that our mount is a little taller than a factory brand new mount. We may be changing our mount but as politics work, it is out of my hands now.
I did find out that a lot of the vibration goes away when a poly torque arm mount is used along with the trans mount.
As for the arguments of drive line and changes, factory was set at .4 degrees and our mount brings it to .8 degrees. you have 3 degrees to play with so driveline vibration through angle change is non existent.
I guess the forum wants me to be a paying sponsor in order to get information. I was just trying to get info for the mount but at the same time give away some cool product. Oh well, they spoiled it for everyone.
Well I got in an automatic 01 camaro ss and it didn't like us and ran poorly. We traded that for an 02 WS6 6 speed and got a lot of the critical information.
My boss is pulling the plug on this project because we found out that our mount is a little taller than a factory brand new mount. We may be changing our mount but as politics work, it is out of my hands now.
I did find out that a lot of the vibration goes away when a poly torque arm mount is used along with the trans mount.
As for the arguments of drive line and changes, factory was set at .4 degrees and our mount brings it to .8 degrees. you have 3 degrees to play with so driveline vibration through angle change is non existent.
I don't think he got back to me though on hooking me up with motor and trans mounts though 
But it's been a long time, so I don't remember if he got back to me or not.EDIT: Actually now that I think about it, maybe it was REMOVING the shim that fixed the problem... "NOTE: WHEN INSTALLING- YOU MUST USE SUPPLIED BASEPLATE." and by Shim, I mean Baseplate.
