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ASP pulley Questions

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Old Aug 24, 2004 | 10:46 PM
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Default ASP pulley Questions

I dont know jack about pullies. IS the ASP pulley worth getting?

Any horsepower gains/pros/cons?

Also, does $60 sound like a deal for the crank and alt. pullies(no belts) and where can I get the belts?

Sorry so many questions, but Thanks in advance!
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Old Aug 24, 2004 | 10:50 PM
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Fist off, a search will yield answers to your questions.

Second, yes, it is very worth while doing. Definitly some horsepower gains. Only con is lower alternator output, bad for big stereo systems.

Considering they usually go for $200 for JUST the crank pulley, $60 is a great deal. Make sure it's legit though. Belts can be bought at local auto part stores.
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Old Aug 24, 2004 | 11:12 PM
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378K4 Belt for AC Pulley
760K6 Accessory Belt for ASP Crank Pulley Only
770K6 Accessory Belt for ASP Crank & ASP Underdrive Alternator Pulleys
755K6 Accessory Belt for ASP Crank & ASP Overdrive Alternator Pulleys
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Old Aug 24, 2004 | 11:16 PM
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Any idea on an actual #, 5-10hp? or so..
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Old Aug 24, 2004 | 11:44 PM
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Originally Posted by fivepointseven
Any idea on an actual #, 5-10hp? or so..
Everyone I've seen says between 6-10 rwhp.
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Old Aug 28, 2004 | 11:42 PM
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Which would be better for a very lightly modded car? Overdrive or Underdrive?
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Old Aug 29, 2004 | 12:01 AM
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Originally Posted by LS1 Love
Which would be better for a very lightly modded car? Overdrive or Underdrive?
you want underdrive for the crank pulley and iff you wish get overdrive for the alternator if you think you need it
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Old Aug 29, 2004 | 01:51 AM
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Originally Posted by LSUxBlake
Everyone I've seen says between 6-10 rwhp.
it all actuality I'm not sure if you get any additional significant HP from the ASP... But you do reduce the rotating mass by a large amount so your motor revs quicker, pushing you through the band quicker. The UD pulley is good for about a tenth in the 1/4, which equates to near 10 hp...

Most of the gain you'll get is from slowing the water pump with respect to the whole belt drive... Still.. i don't think 5-10 hp...

I dynoed after doing an LS6 intake, ASP, and ported TB... I picked up about 10 hp with all these... probably mostly from the LS6
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Old Aug 29, 2004 | 01:53 AM
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Originally Posted by LS1 Love
Which would be better for a very lightly modded car? Overdrive or Underdrive?
you want to underdrive the crank pulley... smaller pulley = faster rotation

simple concept

like said before... good for a tenth on a lightly modded or heavily modded car
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