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Ships within 48 hours · Estimated delivery Nov 8 - Nov 13
Getting alignment concentric to within
step-by-step instructions
1959-1964 Chevrolet Biscayne
Deep dish allows air to flow under nose wing uninterupted
410 lb/in Spring Rate
Patriot Header Flange - 0.375 in Thick - 2 in Round Port - Big Block Chevy - Pair Intake Manifold Gasket Getting alignment concentric to withinPatriot Exhaust H7899 Header Flange Chevrolet Big Block 396 502 Tube Diameter 1 3 4" 2" Same As Port. Precision machined header flanges Heavy duty 3 8" thick material Supplied with our premium head gaskets A wide variety of tube diameters and port shapes available; Patriot Exhaust products continue to offer the best value for the dollar of any brand in the industry. This year's product offering presents sixteen new applications for popular muscle cars
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