Particular situation on a new rebuilt block need help!

J.B. said

I know i have all the 70’s and up items except crank pulley. My question is will a 1970’s crank pulley bolt onto a 1969 Damper?

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'71 and earlier use the same crank pulley bolt pattern (one staggered hole) '72 and newer use the symetrical bolt pattern. To mix and match, just elongate that one hole, as the factory did on replacement pulleys.