DaDon357 Posted March 8, 2008 Report Share Posted March 8, 2008 Do they make an underdrive pulley for the 6.0l truck motor? if so where can i get it? and will it work for a l92/l76 swap? thanks in advance. Quote Link to comment Share on other sites More sharing options...
evallejo Posted March 8, 2008 Report Share Posted March 8, 2008 Do they make an underdrive pulley for the 6.0l truck motor? if so where can i get it? and will it work for a l92/l76 swap? thanks in advance. yeah they make one, but from what I hear, they're no good for the money, as in very minimal power. You should spend your money on something that will get better gains, but if you really want it, here's a link. Quote Link to comment Share on other sites More sharing options...
12'SROCK Posted March 8, 2008 Report Share Posted March 8, 2008 yes ASP makes them and id recommend it, every little helps Quote Link to comment Share on other sites More sharing options...
DaDon357 Posted March 8, 2008 Author Report Share Posted March 8, 2008 yes ASP makes them and id recommend it, every little helps Who is ASP? and is that 20 dollar one any good? Quote Link to comment Share on other sites More sharing options...
smoke03 Posted March 8, 2008 Report Share Posted March 8, 2008 thats just an overdrive for your alternator Quote Link to comment Share on other sites More sharing options...
smpoulin1 Posted March 9, 2008 Report Share Posted March 9, 2008 Tried underdrive pulleys on my last 6.0L. Had problems with the A/C cooling (live in SC), and did not seem to help with the power. Quote Link to comment Share on other sites More sharing options...
12'SROCK Posted March 9, 2008 Report Share Posted March 9, 2008 my friend has had zero problems with ASP pulley, for each his own though Quote Link to comment Share on other sites More sharing options...
KJT13 Posted March 9, 2008 Report Share Posted March 9, 2008 (edited) yes ASP makes them and id recommend it, every little helps I've thought about doing this too. here's a link to the ASP... http://www.lingenfelter.com/store/549984.html Edited March 9, 2008 by KJT13 (see edit history) Quote Link to comment Share on other sites More sharing options...
evozem Posted March 13, 2008 Report Share Posted March 13, 2008 I am also interested in installing underdrive pulleys, but do they make billet pulleys? I would like to make the engine a bit lighter. Not sure. Any opinion guys. Quote Link to comment Share on other sites More sharing options...
gixxerrider Posted March 13, 2008 Report Share Posted March 13, 2008 i have a set on the truck. i did not notice any difference Quote Link to comment Share on other sites More sharing options...
ANGRY6LITER Posted March 14, 2008 Report Share Posted March 14, 2008 Ive got an ASP 25% underdrive for sale. Like new, had to put stock back on for Procharger. I would like to get $130 for it. Call 931-302-1215 if interested. Quote Link to comment Share on other sites More sharing options...
Justin Lamanna Posted March 14, 2008 Report Share Posted March 14, 2008 my friend has had zero problems with ASP pulley, for each his own though underdrive pulleys slow down your accesories. if you are doing a blower look into an overdrive pulley, it will help you run a larger supercharger pulley to help with air intake temps. IMO Quote Link to comment Share on other sites More sharing options...
shadowsniper3006 Posted March 14, 2008 Report Share Posted March 14, 2008 i've used the asp underdrive for around 30,000 miles on my truck and have had no problems. I gained 1 tenth at the track with it, so if you buy it used it'll be worth it, new i would spend the money on something else. If you do it make sure to buy a new crank bolt as they are junk after you take them out. Quote Link to comment Share on other sites More sharing options...
ces63ss Posted August 10, 2008 Report Share Posted August 10, 2008 I know its an older thread but I'm looking into doing a few mods here soon. I'm going to install some pacesetters lt's I have, install cat-back proable gmpp, tune not sure who yet. I'm debating on a cam. Are the underdrive pulleys a waste of $? from What I'm reading it sounds like it. any other mods that will not break the bank? Quote Link to comment Share on other sites More sharing options...
04CHASE Posted August 10, 2008 Report Share Posted August 10, 2008 i will say this they will help the trucks less than the cars. i recently put an asp 25% ud on my ls1 camaro and i noticed a difference from sotp anyway. it revs faster for sure and i can spin my tired in 1st , 2nd and some of third gear. my car is a manual 6 speed with all bolt ons and stock internals. its putting near 350 rwhp . on a truck being much heavier it will see less gains . but rule of thumb for the ls1 cars is about 1 tenth at the track and 7 rwhp . if your goal is bolt ons only it wont hurt you but dont expect anything significant. you may have some problems with your a/c being it will spin your clutch fan ( 03-04) a bit slower so youll need more airflow. it should be able to keep up with power demands but i did a higher amp alt at the same time since i have a 500 watt stereo in the camaro. i will get to 13.0 volts when the a/c is on and the e fans are on idling at 800 rpms. for a heads and cam or cam only swap id probably do one just becasue youl lhave the crank pulley off. i also got to make me a crank pulley install tool that kicks ass. all thread, some thick pipe and a few nuts and washers. Quote Link to comment Share on other sites More sharing options...
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