{"product_id":"obs-hdr-chev-race-car","title":"OBS HDR, CHEV RACE CAR","description":"\u003cp\u003e\u003cb\u003ePart #:\u003c\/b\u003e 2304HKR\u003c\/p\u003e\u003cp\u003eHooker 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.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eLong Tube Lengths\u003c\/li\u003e\n\u003cli\u003eLong Transition Collectors\u003c\/li\u003e\n\u003cli\u003eMonstrous Low-Mid Range Torque\u003c\/li\u003e\n\u003cli\u003eKeep Top End Horsepower\u003c\/li\u003e\n\u003cli\u003eProvides Finest Fit\u003c\/li\u003e\n\u003cli\u003eMost Durable Available\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e1967-1969 Camaro, 1968-1974 Nova: 265-400 Tube Size 1.875\" x 30\" - 38\", Collector Size 3.5\", Collector Length 12\", Port Shape: Same as Port with Adapter Plate\u003c\/p\u003e","brand":"Hooker","offers":[{"title":"Default Title","offer_id":51828569440568,"sku":"H00I 2304HKR","price":0.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/store.motormia.co\/products\/obs-hdr-chev-race-car","provider":"MOTORMIA","version":"1.0","type":"link"}