1999 Pontiac Trans Am - Bolt-On Inspiration - Part 2
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Cost-Effective Mod! Shaner S2 Throttle BodyThe LS6 intake manifold and throttle body bypass modification were dyno tested, and the car picked up power all the way across the powerband. With that test out of the way, we quickly swapped the stock throttle body for a used ported throttle body from S2 Performance. After sending in your throttle body for modifications, the Shaner S2 ported throttle body (on the left) is extensively reworked, including boring out the main body's restrictive ridge at the leading edge of the throttle blades. The air chamber is filled with epoxy, and brass air tubes are added to retain proper idle and PCV operation. Blade screws are ground flush with the shaft, and then the inside of the throttle body is hand sanded and smoothed. A ported throttle body will run you $119.95 in a satin finish or $139.95 polished. With the car loaded back on the dyno, the S2 throttle body was tested. View Related Article
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