Hedman Elite Ultra-Duty Headers - 1.75 in Primary - 3 in Collector - Metallic Ceramic - Big Block Chevy - GM Fullsize SUV / Truck 1967-91 - Pair 20163 commonly used when qualifying or

commonly used when qualifying or when track conditions allow for more power

Drill chip evacuation port

4L 90MM THROTTLE BODY

60 Micron Stainless

anti-corrosion and anti-foam to reduce fluid degradation and increase life of all drive components

Hedman Elite Ultra-Duty Headers - 1.75 in Primary - 3 in Collector - Metallic Ceramic - Big Block Chevy - GM Fullsize SUV / Truck 1967-91 - Pair 20163 commonly used when qualifying orHedman Hedders Elite Headers; 1 3 4" Tube Diameter; 3" Collector; Full Length Design Hedman Hedders Elite Hedders Exhaust Header 69820 Tube Size 1. 75 in. Collector Size 3 in. Tubular Exhaust Manifold System Square Port w o Smog Injection Injection Header 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