When I worked as a grease monkey at a Dodged dealership/shop in 1970, I had the job of trying to keep the farmers' Chevrolet trucks running for the lowest cost. Most farmers knew the unsavory trick that was used when all shims had been removed - file the ends of the caps to decrease the clearance. I do not know why the farmers did not do that jack-leg repair themselves, and I do not know why they brought their Chevrolet trucks to a Dodge dealership.
I never had one come back - probably because when the engine threw a rod, the farmer just left the truck next to the barn (or in an unused field).
I never worked on the muscle car engines but I got to drive a 1970 440 Six Pack at that Dodge Dealership - it scared the H out of me.
