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Originally Posted by mgm1979
South Florida does it, so why can't they? I thought they weren't making 'em b/c there weren't enough people grinding the snout down to make them fit? With ZZPs new tool, there should be a lot more of us dropping down to 2.6 and 2.5, ESPECIALLY once HP Tuners drops their new software suite with our engines in it...I'm going as small as possible when I can spend the time and money to tune this beast right!
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Because their hub is much bigger than the SFPH hub. All the BilletFlow pulley rings have the same inner diameter, which is almost the same size as the outter diameter of the hub. Without redesigning the hub (to have a smaller o.d.) there is not enough clearance to make the I.D. of the pulley rings small enough to make the 2.6 and 2.5 pulley rings.