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Avenger A356 aluminum heads fully CNC, 228cc intake port, 67cc combustion chamber, ProFlo 2.08 x 1.60 stainless steel valves, Pacific 1.250 dual valve springs, flow 326 @ .750 intake / 279 @ .750 exhaust, bronze valve guides, race radius valve job, fully assembled, sold as pair, new, 1750.00

Chevy LS1 aluminum cylinder heads CNC

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