This next measurement is across the Block's Machined Surface at the Dowel Pin Location.
Results:
1) 1967 400 = 0.926" Average (Not Exactly a Straight Surface)
2) 1971 400 = 0.924" Average (Not Exactly a Straight Surface)
3) 1972 455 = 0.883"
Winner 400s
Larry S.
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