article on 1956 SCCA Corvette with 1966 pre-production 302 engine

[1967Z28]

Ken, I'm not too familiar with the 944 blocks. Chevy could do a lot of things like that in their engineering department so I could believe it happened. They did not put a 4-bolt main block in the homologation papers for SCCA Trans-Am racing until the 1969 season so it was not legal to run one of those prior to '69. If somebody did it, it might have been very sporadic because I never heard of a car being disqualified for that infraction. Over the cubic inch limit of 305, yes. A Yenko member here had a real Traco block short block that was built for Dana Chevrolet and Dick Guldstrand's Camaro. It was sold to Tomy Drissi who owned the Guldstrand Camaro at the time. Yes, it was a 2-bolt main "657" block.