I put the gas to this thing and it cracked 2nd pull and is pumping good.Running 24/1 still not sure if this is correct .It's a wizard chrysler built coc6506a86
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As it is a 1967-68 it suppose to have needle bearings in the crank shaft and in the connecting rods (the Chryslers does).
You should be able to run it with less oil than 24:1.