Nicks Garage 383 build
I had a friend with a 78 Corvette. He had the shop rebuild his engine with a good bottom end, and I helped spec the cam. It all looked good on paper, but it was a dog, the stock heads were the bottleneck. He bought some aftermarket iron heads, and I helped install them. After it was done it was a night and day difference, everything worked as it should have in the first place.