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01-03-2001, 11:10 PM
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Factoy Five Roadster
Join Date: May 2000
Location: Sevier Co,Tennessee
Posts: 1,681
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4v motor had flat top pistons,2v had dished pistons. Valves were the same as were everything else. 1969-74 351 heads are the larger valve variety. Untill 76 the blocks were the heaviest 20lbs+ more iron in the webbing. 77 and up are weak blocks,(In high horsepower apps.)
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