Car Year & Model: 70 Ford Mustang Fastback
Competing in: Track Car & Occasional NASA TTU races
Front Clip/Suspension: GT Track-Warrior
Rear Clip/Suspension: GT Track-Warrior
Engine: Track-Warrior 3 LS7 700 HP
Trans: PPG Sequential Shift T56 6-Speed
Brakes: StopTech 14” ST60/ST40
Owner: Greg Weld
Builder: Randy Chastain – One Off Customs
Even MORE photos of the build.
Custom Headers & Exhaust here ...
* The headers & compete exhaust will be coated by Jet-Hot with their 2000° thermal barrier INSIDE & out. This provides a double layer of thermal barrier to keep the exhaust heat in the exhaust, and much less heat radiating to the transmission & cockpit.
The headers & exhaust are a truly "Tuned" System. I utilized an exhaust flow program that allows us to input every variable about the engine, cam, etc ... and know where the "pulses" are. This system allows me to design headers with the optimum primary tube length & diameter. In this case, these are 3-step headers. With the initial tube size 1-3/4", then steps up to 1-7/8" & finally steps up to 2" before merging into 3-1/2" collectors. The program provides me with the optimum length for each step.
In the exhaust after the collectors ... which is also 3-1/2" ... the software program allows me to put the X pipes, H-pipes, mufflers, venturi collectors and/or diffuser cones in the optimum locations. Frankly ifthese are put in the wrong location, based on where the exhaust pulses are, any of these can hurt power, instead of help it.
* I saw a car one time with the X-over pipe in the exact wrong location. When they removed it & just ran straight tube, they picked up 45HP. That's how much power can be lost if the pulses run into each other at the wrong location.
We use diffuser cones in the exhaust to help reduce the sound dramatically. Many tracks have db limits these days. If it placed at the right location, there is no power loss. Sometimes, even a slight power increase.