Patriot Header Flange Kit - BB Ford 5/16 Thick H761001XL GM HEI 4 Pin 1974-85

GM HEI 4 Pin 1974-85

This can be particularly dangerous to high compression and high-boost forced induction vehicles

Kit includes shaft retainer

Full spark energy output to 9

Patriot Header Flange Kit - BB Ford 5/16 Thick H761001XL GM HEI 4 Pin 1974-85Patriot Exhaust H7871 Header Flange Pair Ford 429 460 Tube Diameter 2" Oval 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 including Camaro, Chevelle,