Ls1 Engine Build Crankshaft Pulley Kit
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SLP sells this PN 100221 Harmonic Balancer/ Underdrive Pulley kit for 1998-2002 LS1 F-bodies ($236.85). It meets SFI spec 18.1 and as such is engraved with a unique serial number. SLP's 25 percent underdrive design frees up horses while also maintaining proper cooling system operation and alternator voltage. GM demands that a new bolt always be used in the front of the crank (as this bolt is apparently torque-to-yield), and SLP includes one. Not included are new, shorter serpentine belts; our belts ran about $55 at the local (rather high-priced) auto parts store. View Related Article
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