Cam timing on various NHRA sanctioned engines (1 Viewer)

[flapjack]

Hey @Alan Reinhart, I think a cool video would be about cam timing in nitro vs. pro stock engines. Doesn’t have to be nitro. What got me on this topic is I was trying to figure out how backing a nitro engine down clears the cylinders of nitro before spinning the engine over to bring up oil pressure. I said “ah ha there must be some sort of valve overlap...” anyway, would be cool to know about