A wealthy boy I went to school with got a pristine 1972 340 Challenger in 1975. I nominate it for the sound track for electric Mustangs.Beekeeper » 22 Aug 2023, 4:22 pm » wrote: ↑ Not really with that cam that is highly retarded and high lift.
I've built them with that much rattle. It's when you open them up and get the RPM's up, it makes a difference. More of a high end boost, which is what all big blocks give you.