Hedman Street Headers - 68-73 Chevelle / 67-81 Camaro / 69-79 Nova / 68-77 El Camino / 65-74 Bel Air/Impala 23011606 (Shown with #11-1220 horn button

(Shown with #11-1220 horn button and #10-5506 installation hub each sold separately)

and 1/8"NPT fittings

Trick Shift

This Billet Style Cast Aluminum Fluid Control Thermostat with 3/8" NPT ports allows the oil to bypass the cooler until it reaches 180°F at which point the internal thermostatic valve will close and force 100% of the oil through the cooler while maintaining a constant pressure system

engine performance and ultimately

Hedman Street Headers - 68-73 Chevelle / 67-81 Camaro / 69-79 Nova / 68-77 El Camino / 65-74 Bel Air/Impala 23011606 (Shown with #11-1220 horn buttonHedman Hedders Standard Uncoated Headers; 1 3 4" Tube Diameter; 3" Collector; Mid Length Design Hedman's Standard duty, Uncoated Hedders are manufactured using 18 gauge, mandrel bent primary tubes (some models built using thicker 16 or 14 gauge tubing), and 1 4 flanges (some models use 3 8" flanges). Hedman Hedders has been manufacturing quality headers in the USA since 1954, and they've been manufacturing long and MID LENGTH tube headers for Chevy