BBC swap in my k20

[bucket]

Was a post on another forum the short one was from a G body and taller one was from a Camaro/Firebird he tried to drop the Camaro engine into the g body and ended up in the same position as the OP he then discovered that the ones on the original engine were shorter.

Personally, I've never ran into this issue, but my limited big block swaps were performance engines, and they got solid engine mounts, and when it comes to small block swaps it was either a 6 cylinder being swapped out or a blown-up small block swapped with another small block, and I never ran into the upper mount being different. Just got lucky, I guess.

As for squares I have heard of people having to move the lower mounts to the upper holes and on mine, I had to do this but was probably due to the solid mounts I installed. Never realized there are apparently 2 sizes of uppers.

Depending on application, there's a lot of variables in the brackets that bolt to the engine. But many applications do use the same part.

Interestingly though, GMT400 big block, small block and diesel brackets all appear to be the same to me. And they seem to be the same dimensions as '74+ small block Camaro and Nova. I've got GMT400 mounts in use in my '79 Camaro.

 

[Ricko1966]

Yes,for those who have said it there are different blockside mounts and if you have mismatched frame and engine mounts you will have problems. I learned this the hard way one afternoon. My problem was solved when I changed the steel mounts on the block.