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Originally Posted by SVENSONJR
see thats what i thought and when we dynoed it in va, it was 95 in a garage it was making 13 across the board witht he 8lb lower. i thought it would have been more like 16
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You sure you have an 8 lower? I had a 4 lower makin that much, measure the pulley and see what size it is.
Example:
7.5 inches = stock
8.0 = 2lbs
8.25 = 3lbs
8.5 = 4lbs
8.75 = 5lbs
9.0 = 6lbs
9.50-9.75 = 8lbs (looks like a steering wheel)
Add approx .5 inches for every 2 lbs.
Upper pulley
2.93= stock
2.80= +1-2 Psi
2.75= +2-3 psi
All of these are estimated gains but should get close depending on the mfg. of the pulley