You could also have your bearings coated to decrease the clearances. I have done that before and Calico's thick coating decreased the clearance by 0.0007-0.0008". But as Steve said, I would first check your main bores without bearings to check for concentricity and size. I have put main studs in before and they changed the size of the main bore compared to factory bolts and I ended up getting the main line done.
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1967 Firechicken, 499", Edl heads, 262/ [email protected]" duration and 0.627"/0.643 lift SR cam, 3.90 gear, 28" tire, 3550#. [email protected] mph with a 1.45 60'. Still WAY under the rollbar rule.
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