GM Aluminum Block Small Block Chevy Casting 0 359198

[Rex]

Originally Posted by 1967Z28

Rex, they were probably for Grand Sport Corvette, Chaparral, or simply for development/experimentation. I guess Indy is another possibility since Smokey did try a "stock block" Chevy there.

Hi Jon,

Good to hear from you. These blocks were a little too late to the dance for the Grand Sport program but I'm sure some of the technology derived from the 377 GS alloy engines found its way to these casting numbers. Jim Hall's Chaparral program is a definite possibility but I'm not sure about the Trans Am cars as they were closely monitored by the SCCA and to the best of my knowledge those cars were required to run stock blocks. Please correct me if I am wrong. I thought I was wrong about something last week but as it turns out I was mistaken about being wrong. LOL