Enginemasters Pontiac 14 Z
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Here, Kaase removes one of the Tigers for examination. These heads were originally designed by Don Johnston of DCI Motorsports and are now produced and sold through AllPontiac.com. They are made from T-356 aircraft-grade aluminum heat-treated to a T-6 rating. Each head weighs 40-45 pounds bare compared to 60 pounds for an iron Pontiac head. AllPontiac.com's IAII block has thick deck surfaces for improved rigidity and cylinder-head sealing. The exterior walls of the block are also thicker, and the head bolt bosses are tied into them for even more strength. View Related Article
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