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Avenger A356 aluminum as cast, 320cc intake port, 120cc combustion chamber, RaceFlo 2.25 x 1.88 stainless steel valves, Pacific 1.550 dual valve springs, 11/32" valve stems, bronze valve guides, flows 365 @ .700 intake and 315 @ .700 exhaust, stock intake and .375" raised exhaust port locations, 3 angle valve job, fully assembled, sold as pair, new, 1500.00

Chevy 454 aluminum cylinder heads

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