Which one produces the most power? Do they produce the same amount of power or what? The Crank Pulley seems to be used the most on the site. The set w/ the alt. pulley, does that give you the same amount of power and just increase voltage or what? TIA

 

I'd assume they make the same power 8-12rwhp or so. The overdrive alternator pulley spins the alternator faster at idle to compensate for the 25% slower turning of it due to the crank pulley.

 

I've had both the underdrive crank and underdrive alt pulley set up and now I'm using just the crank pulley. The underdrive combo probably gives a little more power than just the crank pulley by itself. The downside is that at idle your voltage drops with both set ups, a little more with the combo set up. I just got the overdrive alt pulley which is suppose to keep the charge normal at idle by overdriving the alt to compensate for the underdrive crank. I've yet to install it though.
Jim

 

So which set-up should I get? Also, does anybody know what rpms the stock alt & the ASP alt pulley charge at?

 

800 rpm's for the crank pulley only and 950 for the crank and the alt pulley. This is according to their website.

 

I'd get the crank pulley and the overdrive alternator pulley. The overdrive alt pulley is tiny, like 1.75", it will spin the alternator faster at idle keeping your voltage up. I am trying to find an impact socket to fit in there with a 24mm nut so I can install one also...I just can't pay someone to do this and when I find that socket I get another tool!

 

Anyone have a Picture of the crank pulley from ASP ?

 

Hey Hit Man X! A 15/16" socket will work also, I don't have an impact wrench, may go to work today and use the one we have there to install mine.
Jim

 

I have the under/over setup. It's really not an issue to be concerned about.

 

Really!? Sweet! Jim! I can get the stock pulley off with no problem, but when it comes to putting that tiny one on, the socket is too large to fit in the hole to tighten down that nut...the one that I have that fits is 22mm and too small! I pretty much have decided to take the alternator off, take it to Sears, bring the tiny pulley, and find exactly what I am looking for.

Are 3/8" impacts narrower than 1/2" impacts?

Thanks!
Eric