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compresion ratio

  1. Engine
    Hello I have a stock bottom end 89 350 tbi crate motor with a comp cam 280 magnum camshaft it has 230 duration at 0.50, .480 lift, and 110 Lsa. I just bought 906 vortec heads that have been milled to 56cc combustion chambers and have z28 valve springs for a max lift of .525 the studs have also...
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