Who's running polyurethane engine mounts?

[Tominator II]

When my not that old rubber motor mounts seperated and the Harmonic balancer was rubbing on my crossmember is when I got Polyurethane motor mounts. They gave me a little more crossmember clearance than the rubber ones too.

 

[dyeager535]

If a PO has replaced the original GM mounts with some aftermarket pieces, you MAY not be able to use the poly mounts.

Bought poly mounts for mine, took the "stock" ones apart, then couldn't figure out how to get the two halves together. Sure enough, after awhile I compared them to some other motor mounts, and the aftermarket mounts were smaller (to save material as far as I could tell) in a few spots, which meant the poly wouldn't work.

 

[Ultimate CC]

which mount do you need for a sbc, the tall or short clamshell ones?

 

[Chevy305]

I have the ORD Comp Poly mounts which are much heavier duty than the clamshell crap. My engine sits a little higher and they have far more rigidity to them.