Hedman Elite Hedders - 63-82 Corvette 500020160 a one time setup calibration

a one time setup calibration is accomplished via push button interface on the module to synchronize the alternator signal with engine crank RPM

12 in Long

one 3/8" NPT inlet and is adjustable from 1 to 4 psi

The intake bolt pattern utilizes the 1986-91 (straight) 90 ° angle on all bolts

Hedman Elite Hedders - 63-82 Corvette 500020160 a one time setup calibrationHedman Hedders Elite Headers; 1 5 8" Tube Diameter; 3" Collector; Full Length Design The standard duty Hedman Hedders in this section come from the factory with an extremely durable, protective ceramic metallic coating. Hedman Hedders, pioneered the use of ceramic metallic coatings, back in the early 80's. Previously used exclusively in the aerospace industry, Hedman Hedders recognized it's potential for improving both the lifespan, and functionality