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1996 Ford Mustang GT Project Car BBK Underdrive Pulleys

The gains offered by the BBK underdrive pulleys increased with engine speed. Like the throttle body and intake, the pulleys offered 6-7 hp past 5,000 rpm.
Intake Install - Project Redheaded Step Child Part 1

 The gains offered by the BBK underdrive pulleys increased with engine speed. Like the throttle body and intake, the pulleys offered 6-7 hp past 5,000 rpm.  View Related Article

 

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