Under
Drive Pulley
25%
Reduction Crank Pulley and Harmonic Balancer, Amazing Power improvement
8+HP 27+lb of torque(as per ASP Racing), From ASP
Racing,
Part# ASP501150
Below: New pulley waiting to be installed.
Below: Stock pulley (bottom center) not yet removed.
Below: New Pulley in the old pulley to show the size differences
between stock and the new pulley.
Below: New pulley installed with the new belt.
Below: New Gatorback belt.
Many people fear the under drive pulley. Main fear is under driving the alternator.
Sitting at a light the voltage drop is less the 1/2 volt. No big deal, truck runs great.
A/C runs fines and no lose of cooling from the water pump. Even with the 25% less
speed on the power steering pump, it also fine.
The motor revs up faster, More power across the RPM range with the new pulley.
Great bang for the $$.
Modifications
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