So my brother-in-law is giving me an OMC 140, 153 CID GM-built four-cylinder from 1963. If I wanted to put this in a car, would I need a different camshaft? My understanding is that a typical marine engine has a cam that is sort of like an RV cam, bottom-end torque. I had a brief chat with a guy at Comp Cams, and there’s a matter of lobe separation... Here’s part of the chat transcript:
Matt: Looking for something off the shelf. I just put 268H out there as a comparison. I understand that 268H is an “RV” cam, torquey low end.
Fred Jones: If it is a shelf that you are looking for, then the 14-123-5..
Fred Jones: 1200-5200...
Fred Jones: 212/212 duration @ .050" and .475/.475 lift with a LS of 110, but we would have to custom it for the reversion...to a LS of 112
I have a T-5 — mechanical tailshaft — transmission I could put behind it...
Here are the specks on the cam that the Old Guy recommended.
Can you educate me a little bit here, or refer me to a good reference material?