i have an 87 firebird i am doing an engine swap in. it had the 2.8L and im puttting in a 5.7L 350ci chevy h.o. but i dont have the engine mounts to put it in. was wondering if anyone had an idea as to how this can be done easily or a part # for the engine mounts.

 

motor mount # from autozone is 2292. this is the rubber mount. the steel shell should be on the engine if pulled from a car, or if using a crate motor go to salvage yard to get a pair. the steel shells can be from any 80's GM car or truck with a smallblock. around here their $25 a pair. also you'll need to swap out your transmission the 2.8 has a different bolt pattern on the bellhousing and their not strong enough for the V8.

 

can i use the same shells as the ones that came off the v6 or do i need to get v8 ones? and also i have a new turbo 350 trany for the engine after all this going to look into a new rear also

 

I believe they are different as the 2.8 is not a 90* v engine. if you are using a TH350 trans then you will need to get a cross member swap kit for the torque arm, seen them for around $100.

 

yeah i already have the torque arm bracket for the th350 conversion but i guess ill go to the junk yard and see if i can get the mounts

 

The engine half is definitely different between V6 and V8. The V6, as stated, is 60 degree, so the block is farther away from the mounts than the 90 degree V8 block is.

There was a post about the engine half about 2 years ago (I remember because that is when my 350 went in place of the 305 - that went in place of the V6 in 1999). At that time, the engine halves were still available from the factory. There is a different part number for the left and right mount, but I was never able to figure out if it makes a difference if they are swapped side-to-side.

While you're at it, this would be an excellent time to get polyurethane mounts for the frame side. Far, far superior to rubber.

 

well i thought the mount was different from the v6 to the v8 but i was wondering if anyone had a part# for it

 

Now is the time to . Might as well be you doing it as someone doing it for you.