Hooker Adjustable race
Headers allow you to change your header primary tube lengths, collector lengths and diameters and collector types (Classic 4 into 1, Merged and Split–Flow). By altering the relationship between the primary length and collector diameter and length it is possible to increase or decrease the torque and horsepower output at any specific R.P.M. level. For a slick track the header primaries or
Collectors can be shortened to decrease the low end torque for better traction. Larger diameter
Collectors will also reduce low end torque. On a good track with lots of bite, extending the primaries or
Collectors will pick up bottom end power for a harder launch and awesome e.t.'s. Smaller collector diameters will also increase low end torque.
Hooker adjustable
Headers have taken more Pro Stock drivers to the championship
than any other brand.
Down Swept Style, Adjustable Race Tube Size 2.375" – 2.5" x 28", Collector Size 4.5", Collector Length 12", Port Shape: Round, Metallic Ceramic Coating
Installation Notes
Breaking in an engine with ceramic coated
Headers WILL result in damage to the coating and will VOID all warranties. Ceramic coated
Headers require several heat cycles to fully cure before they will withstand extreme heat.
Hooker recommends using cast iron
exhaust manifolds or old
Headers to break in new engines to avoid coating damage. Please call
Hooker tech service at 270-781-9741 for additional information regarding ceramic coated exhaust products. The use of header wraps can cause the header tubes to crack or rust due to excessive heat and moisture build-up.
Hooker does not recommend the use of header wraps as this will void the warranty.