The block is a 10/66 casting. Hot tank mag no crack no welds no repairs. Bore an hone to .030 block mill to 10.708 bal. Crank ground to .010/.010 and harden. Rebuild with nos piston an 6.690 nascar rods, comp cam, total seal rings new cam bearing. This is a 10.5 to 1 engine the piston are 12.5 to 1 with a 7.06 long rod and a .019 head gasket so with a 6.960 long rod the piston is a .100 down the hole and .041 head gasket the engine will be a 10. To 1 engine. I will be on the road for the next 7 day so call me 714 421-7171.

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