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-   -   underdrive pullies (https://blazerforum.com/forum/headers-intake-exhaust-10/underdrive-pullies-34627/)

Rebels01blazer 09-11-2009 05:17 PM
underdrive pullies
 
hey i have a 01 blazer 4.3l vortec i have the k&n coldair intake and Throttle body spacer. i was wondering if the underdrive pullies would make a noticeable improvement and were i could get a good set. thanxxx


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