Hedman Elite Ultra-Duty Headers - 1.625 in Primary - 3 in Collector - Metallic Ceramic - Small Block Chevy - GM Fullsize SUV / Truck 1967-91 69830 - Pair H759C01M 594 in Diameter

594 in Diameter

Stepped Acceleration Chamber

155 in Bearing Bore

Track and Trailer Ramp

The runners have been ported to improve velocity and evacuate the cylinders

Hedman Elite Ultra-Duty Headers - 1.625 in Primary - 3 in Collector - Metallic Ceramic - Small Block Chevy - GM Fullsize SUV / Truck 1967-91 69830 - Pair H759C01M 594 in DiameterHedman Hedders Elite Headers; 1 5 8" Tube Diameter; 3" Collector; Full Length Design Hedman Hedders Elite Hedders Exhaust Header 69830 Tube Size 1 5 8 in. Collector Size 3 in. Tubular Exhaust Manifold System w o Smog Injection Or Injection Heads Ultra Duty 14 Gauge Primary Tubes Ceramic Metallic Coating Stands Temp. Up To 1400 F Durable 3 8 in. Flanges Prevent Warping And Stands Up Better Against Brutal Punishment Durable And Affordable Hedman Hedders