I changed mine because at W.o.t. my belt would slip on occassion which seems to be common on LS-1's
I did my research and got a Powerbond 25% u.d. pulley, it is SFI approved and they also happen to be the supplier for SLP except that they sell for alot cheaper under the Powerbond name
I daily drive mine and never had a problem with anything
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2002 Z/28 = Firemutt Racing 370 w/ Cam, Trick Flow heads, TPIS 90mm Intake & 90mm T.B., Vigilante 3600 t.c., Michael's Transmissions Built 4L60E.
QTP Headers, Mufflex Stainless Y-pipe, Pypes Performance Exhaust, Moser 12-bolt w/ 33 spline axles,Truetrac & 3:73's., Spohn.
Cartek Tuned...
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