does anyone recognize this alt pulley?
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Teching In
Joined: Dec 2011
Posts: 13
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does anyone recognize this alt pulley? Is this the standard pulley for LS GTO Alternator or and ASO overdrive?
I have a 25% reduction underdrive crank pulley - concerned about over revving the alternator since the car is a track car.
New to LS motors..so excuse the noob question!
I have a 25% reduction underdrive crank pulley - concerned about over revving the alternator since the car is a track car.
New to LS motors..so excuse the noob question!
Last edited by Mz3 SBC; Feb 5, 2012 at 01:26 PM. Reason: forgot pic
Launching!
Joined: Jun 2009
Posts: 213
Likes: 3
From: Manitowoc wi.
That hub on the end of your pulley is an overunning clutch. The oems have been using these to save wear and tear on the belt drive systems and to suppress noise. With larger amperage outputs they needed these to keep the belt from fluctuating violently thus throwing the belt off during high load conditions.
Hate to break it to you, but an underdrive crank pulley drives all the accessories (including the alternator) at a lower speed than normal...
