iWon

iTrader: (13)

Does anyone have a link or how-to on installing poly motor mounts into the stock clam shell brackets for 93-97 lt1?

I did some searching and it's all mixed reviews, many guys say they love the poly mounts, many say they give too much vibration. With my 383/CC306, there is so much noise and vibration from the cam being so choppy anyway, I don't think it will matter.

How much of an improvement do the poly motor/trans mounts make? Specifically on a big H/C car?

sjsingle1

iTrader: (1)

only 1 way to find out......install them.......i think the old LT clam shells are similar to the LS shells......just grind off/out the rivets and pop in the new units and bolt the shells together

BMR Sales2

iTrader: (40)

It will definitely help control the movement in the engine and transmission but there will be some trade-offs. There will be some more noticeable vibrations but I personally think they are worth it. If you are interested in the motor mounts and trans mount give me a call and I can get you set up with them.

wysemunky

iTrader: (2)

I've got poly motor mounts and a rubber trans mount and there are no super noticeable vibrations, but my factory rubber motor mounts were completely collapsed. I haven't put a poly trans mount on because I have heard that they can transfer a lot of vibrations and noise, but if I break another rubber one then I'm gonna throw one on.

Ehatcher

iTrader: (1)

Don't get the wild idea of throwing soild mounts in the car. I kick my *** daily for going with solid mounts over the poly mounts. My car vibrates and rattles like hell, and it is stock cubes/stock cam. As soon as i get the chance, Im jerking these things out of the car and putting in some poly mounts.

SinisterWS6

I think they make a big improvement. My car vibrates less, shakes less, etc. Before, after I did my cam swap and what not, the engine shook a lot. Turned out one rubber of my engine mounts and the tranny mounts cracked through lol.

Wouldn't every clam shell install be the same? Split it in half and bolt it back together with supplied hardware.

z2895

Im putting in energy engine mounts this week end. When u guys changed them how long did it take? And what is the easiest and fastest way to do it?
From looking there is like no room! any tips or advice will be appreciated. thanks

HoLLo

iTrader: (17)

Someone started spreading a rumor a long time ago about poly trans mounts adding horrible vibration and it needs to go away. I've ran poly trans mounts on 3 cars and they do slightly vibrate after initial install but they wear off within a week easy, and its barely even noticeable that first week. After that they soften up and you will never know its there until you go wide open and notice your shifter stays firm put and not rising up into the roof anymore. Great investment. I have yet to try out poly motor mounts yet because honestly I just don't feel like installing them, but hope to someday

leadfoot4

iTrader: (1)

There's a TAD more vibration, but in all honesty, if I didn't KNOW there were poly mounts in my car, I wouldn't really feel the difference......