What should the spring pressures be for a Mopar 509 cam?
Posted By: 1969ronnie
Re: Mopar 509 cam - 06/26/16 09:39 PM
hi,old 509 big block cam used #3690933 springs 109 lbs @ 1.900 and 333 lbs @1.400 . new 509 cam uses #5249848 springs. the wire dia is .224 on the 933s vs .216 on the 848s. ronnie