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Thread: underdrive pulley
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01-13-2007, 08:08 PM #1
- Join Date
- Nov 2006
- Location
- New Jersey
- Posts
- 245
Sunset Orange Metallic-M6- 2002 Pontiac Trans Am WS6
underdrive pulley
are there any disadvantages to them? anything harmfull? and whats a good company that sells a good one with an alternator pulley to keep it at a normal pace? is it worth the HP? thanks
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01-13-2007, 08:21 PM #2
The only thing I can think of is if you have a huge stereo pulling on the alternator. But you already addressed that by looking for a smaller alternator pulley. If you don't have a big stereo, then the stock alternator pulley should be fine.
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01-13-2007, 09:46 PM #3
Early versions were known to throw belts and some couldn't be used with double roller timing chains. Those issues have been corrected. Good brands are ASP, SLP, and Powerbond. TSP usually has the best deals on Powerbond. $199.00 with belts and crank bolt I believe. I got mine for 209.00 I don't think anbody will tell you that they noticed a gain in HP they could really feel. I bought mine because I am getting a new cam put in and the stocker pully has to come off anyway, so why not put a underdrive one one in it's place. I just wanting the faster revs myself. I seriously doubt I'll notice 6-8 HP on a near 400HP car.
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01-14-2007, 07:47 AM #4
- Join Date
- Nov 2006
- Location
- New Jersey
- Posts
- 245
Sunset Orange Metallic-M6- 2002 Pontiac Trans Am WS6
so if it gives faster revs itll increase acceleration reduce 1/4 mile times pretty well wouldnt it? (obviously not a whole lot- maybe .1-.2 ?)
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01-14-2007, 11:31 AM #5
- Join Date
- Nov 2006
- Location
- New Jersey
- Posts
- 245
Sunset Orange Metallic-M6- 2002 Pontiac Trans Am WS6
oh, and i have a stock monsoon radio. i wont be upgrading my stereo or anything like that, im not into that- i want more power not more sound
anyway, so being that i have a stock stereo, i wont need the alternator pulley? or should i get the 2 pulley set incase it desides to take a dive? i have an automatic by the way
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01-14-2007, 12:03 PM #6
In Jersey you'll be ok. Out here in AZ in thbe heat we have issues sometimes in the summer running warm.
Get the 2 piece and even though you don't have a stereo put the alt. pulley on.It will give you a nice voltage increase at idle.Don't be afraid of the bottle!!! Be afraid of your tune!!!
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01-14-2007, 10:48 PM #7
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