How well did you ream out the oil passages after the block came back from the hot tank? Several passes with a .22 caliber brush and bore solvent are needed to make sure these oil passages are clear.
I/I #4101 '71 GMC Jimmy 350, sm465, np205,3.73 posi. '68 C/10 Stepside 292 (.030 over) Offy Intake, 500 CFM AFB,Clif headers, sm465, 3.73 posi. '67 K/10 454 project. '72 K/5 rolling frame project.
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