Re: How close to dead is it?
Well, I say its slap because it sounds like a few old Chevys that I've heard right before the owners got the things bored and new pistons dropped in to eliminate the issue; successfully. Also, a mechanic friend of mine made some off hand comment about the lovely sounds that old Chevys make and he too said it sounded like slap. As for the cam, its a hydro flat that has a LOT of miles on it and is from a very old build. roughly 20k miles put on it since last February. Prior to that is unknown.
1968, 5 speed, Vintage Air Gen IV, American Auto Wire Update Series, Champion 4 Core Rad, BMR front w/ Koni's, BP Roller 383, Posi 8.2", Solid Frame Bushings