This a real question for the engine builders here! My son is putting together a SMALL big block chevy and doing research on dampers! Build info---- 4.311 bore 3.76 crank 6.135 rod chevy steel crank. Yes it will be a 440 chev. Intended rpm range to be 6500 at the top. this is a budget build and not looking to buy a 500.00 dollar damper but a decent piece for it! I have my ideas but would really appreciate response from steel,gn and the obnoxious one on this! Thanks in advance! Ol guy.