Exhaust Systems - Theory

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Do Big Bore Headers/Exhaust systems increase Horsepower (HP) at low RPM, hi RPM or both? What is the effect on the power band, broader, flatter, more torque at low RPM only? Does a 351-C require some back pressure to funcion better across the powerband? What HP increase can one expect for Big Bore Headers/Exhaust Systems? Should the exhaust system only be upgraded if the intake system is upgraded?

Lastly, were the 351-C engines supplied to the De Tomaso Factory balanced and blue printed or in any way given preference over 351-C engines going into Mustangs, Boss 302s, Mach 1s, etc? Is the Red-Line of a Pantera rated higher than those factory cars?

6/28/0312:44 AM

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