Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Camshafts are interchangeable between the 427 and 366. The 502 exhaust and transmission bellhousing bolt patterns are the same on the 502 engine. you can get the parts needed for the 366 to make it a marine application, but if it were me, I would opt for the larger engine. Its like having a built in power upgrade.