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D1VE blocks were used in production for the 1971-1978 model years, so it can be machined anywhere relative to intended deck hieght for a given year. The actual casting date code is in the lifter...

(Parallel posting :3dSMILE: )

You ought to be okay with 0.051" quench distance.

Paul

Steve-o,

I agree with the two posts directly above. 200 cranking compression on pump gas is a bit much for my personal taste, and the quench distance in your combo could be minimized to improve...

Your combo with L2404's (assuming) will get you at about 9.5:1 but with about 0.070" quench distance. Reduce that to about 0.040"-0.050" and detonation control will improve significantly.

Paul