I have never ran it would imagine based on what I have read if you arent running long tubes about 9-10lbs with long tubes maybe 1-2 less I know this pulley with the rear overdrive pulleys I have for sale makes a total of 14lbs. I think rule of thumb is 2lbs for each pulley size you drop.
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2011 2SS,fti th400, ECS 1500, Flex Fuel, Boost built 376, squash fuel system
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