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RPM 3000-6700, Max lift .540/.537
Oval track - 4 & 7 Swap Firing Order Mechanical Flat Tappet Camshafts with 1-8-7-3-6-5-4-2 Firing Order. The Com-12-688-47 is solid - 1/4 to 3/8 tight. 327-358 cid. 12:1 + 4bbl with good intake and exhaust. Uses COM-813-16, COM-800-16 lifters and COM-950-16, COM-978-16 valve springs.
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