Update by Tim Suddard to the
Shelby GT350 project car
Jan 19, 2012
We couldn't use our Shelby's original manifolds with the new engine, so we got these hot headers.
A large-diameter exhaust system is necessary if you're hoping to make the engine's full 500 horses.
We thought the power increase of our 500 horsepower engine deserved an upgrade from the stock 2.25-inch exhaust system.
The Ford Racing Z363 engine has taller heads and larger exhaust ports that require custom-made exhaust headers. Fortunately, we found a company, Ford Powertrain Applications, that had done this conversion in an early Mustang. For about $700, we got a beautiful pair of headers finished in a high-temp coating that were perfectly suited to our needs.
For the rest of the exhaust, we used Magnaflow’s 2.5-inch stainless steel Mustang system. We thought the power increase of our 500 horsepower engine deserved an upgrade from the stock 2.25-inch exhaust system. This computer-designed kit is mandrel-bent and fits right. Total cost for this setup is less than $600 from National Parts Depot. We capped off the system with reproduction 1967 Shelby GT 350 exhaust tips that have been modified to fit the larger tubing.
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