don't use too much main clearance or you'll lose oil pressure really bad.
i would have the shop install the crank no oil and test spin the crank. it should spin freely if not you'll need the line bore.
or you check the clearance with the old bearings and then the new bearing for accuracy.
we usually do head only work after the overrev. once we had piston failure.check the valve spring retainers they usually cracks open on the underside where the keepers go.and then the valve drops causing the piston failure.
ps. i usually sleep at a holiday inn express b4 any major engine rebuilds,actually carlos sends me for the whole week to make sure i get the edge b4 the rebuilds or any major work on his car.
steve saney
it-7 /it-a #34
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