350 to 455 swap question??
I’ve pulled and sold the 350 that came in my 72 LeMans sport. I also bought a 455 and the stroker crank to swap in.
The car is stripped down to its frame for rust removal and coating when I read something that gave me pause.
I heard mentioned that swapping in a 455 would require moving the motor mounts. While searching I’ve also seen posts saying the two should just swap straight across, and also a post saying it depends on the year of car and motor.
Where I no longer have the old motor to look at, is there a way of looking at the engine and frame and determining if I need to move the mounts? Currently it looks like my frame has holes for two different locations. Low and kind of centered is where the mounts currently are. There’s also another set of 3 holes maybe about 4” higher and a bit farther forward.
Any help would be appreciated as doing the change now while it’s just the bare frame would be much easier.