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post #83 of (permalink) Old 01-20-2015
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pdmustgt's Avatar
Joined: Mar 2011
Location: Midwest
Posts: 1,160
It doesn't distort like that not even close to oval. Block may distort around head bolt area in the block like .0005-.001 in most cases in 4 spots. Never causing pistons to seize or scuff just maybe down very small faction of power. Problem is where head bolts anchor in upper part of the cyl like smallblock and bigblock ford in all out race engines. Where this distortion was in upper part of the cylinder where combustion takes place. Distortion in lower part of cyl doesn't hurt power but these newer engines head bolts anchor in strongest part of the block where main bearing bulk head and cyl's tie in at
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