Looking for KB 2.3 Pulley to boost numbers

speedfreek88

-Skinny Pimp Racing-
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Jan 24, 2007
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NE Arkansas
i make 16 and almost peak at 17 sometimes with a #6 lower (9 inch) and 3.5" upper!

hp and tq in my sig...
 

jeffthagiraffe

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Dec 2, 2006
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No texas city, tx
id be careful then if your wanting to keep your truck running and dont have the money for a built block. i had a 3.5 upper and 6# lower and madw 18-20 with my 2.6 kb
 

svtharley

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Feb 25, 2008
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houston
i ran a #6 lower with 3" and made 16lbs and with the 2.75 it made 19lbs. with a kb 2.3
 

busakiller

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i had a custom crank pulley made from moto blue. sure it was the size of a grabge can lid, but if youre lookin for the most boost possible keep the upper pulley as big as you can. dunno about the rest of you guys, but i fought pulley wrap and belt slip the whole time i dicked around with the blowers.
 

txyaloo

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Nov 28, 2004
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Texas
I saw around 14lbs with a 6lb lower and a 3.65" upper. With a 3.40" upper I was seeing around 16lbs. These were with no slip BilletFlow pullies.
 

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