Hooker Super Competition Headers - 2.125 in Primary - 3.5 in Collector - Metallic Ceramic - Big Block Chevy - GM A-Body 1968-72 - Pair Wire Cutter The limit is accurate to

The limit is accurate to within 1% and operates by dropping the spark to individual cylinders then firing that plug on the next cycle to avoid filling the cylinder with fuel

toward left front

Torque to 68 ft-lbs

Whether stock tow rig or 8500 RPM screamer

If you run an aluminum rotor

Hooker Super Competition Headers - 2.125 in Primary - 3.5 in Collector - Metallic Ceramic - Big Block Chevy - GM A-Body 1968-72 - Pair Wire Cutter The limit is accurate toHooker Headers Super Comp Header 2265 1HKR Metallic Ceramic Coating Full Length Tube 2 1 8 in. x 36 in. OD Collector Size 3. 5 in. OD Collector Length 10 in. Port Shape Round Long Tube Lengths Long Transition Collectors Monstrous Low Mid Range Torque Keep Top End Horsepower Provides Finest Fit Most Durable Design Available Applications include: Chevelle, El Camino, Sprint, Chevrolet, Gm., 1972, 1971, 1970, 1969, 1968 Vehicle Applications: 1968 1972