Exhaust Blowout on a Mopar 300hp Crate
The Hookers feature a layout similar to Hedman's full-length tubes, withthe number 3 tube passing up along the valve cover, crowding the plugwires to cylinders 5 and 7. Also, the number 1,5, and 7 tubes are routedlow to go under the steering drag link in the chassis, hindering groundclearance. The 15/8-inch full-length headers provided quite animprovement in torque, with 423.9 lb-ft on tap. At 319, horsepower uptop was down fractionally compared to the shorties. We would expect theresults to be different if the engine was equipped with more camduration, but at this mild spec, the tuning advantage of the long-tubeheader is largely lost up top due to cam timing. View Related Article