Head-Flow DataRHS 220cc intake-runner Pro Action heads equipped with 2.02/ 1.60 valves were flowed at 28 inches of water by Sherman on his SuperFlow bench. In theory, the flow numbers indicate these ...
If you've ever leaned over the fender of an old Chevy, timing light (one of the automotive diagnostic tools to add to your DIY collection) in one hand and a long extension on a ratchet wrench in the ...