When I had my cylinder heads off when replacing the lower housing for the pushrod tubes, I noticed the strong resemblance of the combustion chamber and valve gear to the big block Chevys of my muscle car youth. So if the valves, valve springs, rocker arms and lifters are not direct copies of GM parts, they certainly seem inspired by them.
Last edited by Bitsobrits; 19/08/26 01:20 PM.
