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Old 05-28-2013, 04:55 PM   #377
T2vigil
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Join Date: Jan 2010
Location: Evensville, TN
Posts: 236
Re: Tricked-out Chevy six cylinder engines

The trick is on the inside. I had it bored over .040 and about .005 to .007 off of the top of the block to clean it up - rusty and about .020 off of the head for the same reason. I ported and polished the head installing a COMP Cam similar to the Mercury Marine cam. finally I used 307 pistons and they are flat top not dished like the 250s are.
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