Stereo & Electronics - ASP 25% underdrive pulley with a H/O Alternator

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cws T/A

03-06-2008, 10:04 PM

Anyone have this combo ? Alternator is a Alterstart Load Boss 200amp , not sure on pulley diameter it was supplied with . FWIW the pulley is gold and on the output sheet says test pulley diameter 2.230'' . What diameter pulley is stock ?

Wanting to put a cam in the car and want to add a new harmonic balancer , figured I free up some power with an underdrive version .

New cam will idle around 950-1050rpm , LG Motorsports G5X3 112lsa .

99Bluz28

03-07-2008, 06:24 PM

I'm running a powermaster 200 amp alt. with a slp 25% underdrive pulley and upgraded power and ground cables and a 850rpm idle with no problems! That's with 1150 watts going to my subs, and 330 watts going to 2 set of main speakers.

ASP makes a overdrive pulley if you feel you need it.

http://www.byunspeed.com/product_info.php?manufacturers_id=334&products_id=6967&osCsid=0794834503741a2d738cbd5ed0493