Patriot Header Flange - 0.313 in Thick - 1.625 in Round Port - Small Block Chevy - Pair MAC-1X perfect flatness and the truest

perfect flatness and the truest rotation of any rotor being built

REM Finished

Added Oil Capacity

1985-1990 GMC Safari

Patriot Header Flange - 0.313 in Thick - 1.625 in Round Port - Small Block Chevy - Pair MAC-1X perfect flatness and the truestPatriot Exhaust H7864 Header Flange Pair Chevrolet Small Block 265 400 Tube Diameter 1 5 8" Round Port. Precision machined flanges 5 16" thick Supplied with our premium head gaskets A wide variety of tube diameters and port shapes are 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 and trucks