hey all new here, iv got a 78 cutlass salon 2 door its got the chevy 305 original in it and well lets say its gettin tired. so iv bought an olds 455 and im wondering what ll i need to do to make it bold it. will i have to fab a new mounts or can i use big block mounts and it will jsut drop in?

 

I haven't done that myself but do know it has been done. So without answering your question I just want to encourage you. Go for it.

 

You are going to need oldsmobile frame side engine mounts from a similar body car.

 

I believe you have to use either two small block or two big block style mounts. Make sure you don't use one of each.

 

If I am correct, you can use the same mounts. But they will have to be moved. Do they look like in this pic?
Let us know.