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JOHNZ, Thanks for the info... It would seem Chevy would use the 291 heads as they came into production (march/april) on the Vette. I have found a set of 291 heads with a cast date of E-29-7. Your car gives me great info.. My car was 121392 built. Engine V0620HT, cast F-6-7. May 29th heads would...

I have a 67 L-79 car, and am looking for original date heads. The block is cast F 6 7. HT block. It lost its original heads some time in its life. Vette books show 462 heads as being the correct castings. Chevrolet by the numbers shows 291 Heads being used in late 67 production (March/April). I...