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Message: <blockquote data-quote="OLD H2S" data-source="post: 1438591" data-attributes="member: 20979">On a blower car use King for the main bearings regular aluminum for the rods. I have been using Del West for wrist pins even on cast pistons. As for pistons they are all good, the problem is MOST piston are only made .010 over size and bigger. Your engine bores are probably ok with just .003 of taper to the bore in the north/south direction but you must open the bore .010 bigger to get the new pistons to fit. Then there is GibTec, they make your piston to size and you order after you hone the bores straight with minimum removal. Get your pistons before going to the machinist so they get fit correctly. All of us here have used all the major brands so... I have 2 engines for sale, one is 13:1 cast pistons and the other is 10:1 forged pistons blower ready, it just depends on the application of the engine.</blockquote>