I've got a 75 f150 with a 460, its got d3ve heads, headers, a steath intake, a voodoo 291 cam, and edlebrock carb, i just put on new comp cam rocker arms with the stock ratio of 1.73 and now shortly after i fire it up i can hear what sounds like spark knock coming from the passenger side head or something. the truck seems to idle fine and drive fine but at idle i can hear that sound. any one have any ideas? it didnt do this before the new rockers.
also i cant hear it that well when the hoods closed and sitting in the truck, only when the hoods open and i'm looking in the engine bay.