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This head is for large bore power w/ a 63cc combustion chamber “here at promaxx we do diesel performance stuff, too Dyno results produce 700 hp plus on pump gas
Requires 4″ bore minimum and ls3 intake rocker. In addition to the ls head, promaxx decided to dive into a world where an affordable aluminum cylinder head isn’t exactly commonplace — the diesel market Shop the best available promaxx xxtreme gm ls aluminum cylinder heads parts at the guaranteed lowest prices
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