running out of boltons, Are underdrive pullies a good mod? will is work in conjunction with my other mods? I need a little better response from my truck and to make it feel slightly lighter, will this mod do that? I've never messed with these pullies, what all is recommended? crankshaft and alternator pullies? thanks for the help- Allan

 

do a search, there's plenty of info on them....even dyno results....

 

i love my udp. i did mine when i had 3.42 gears and could then chirp the tires. after install. doubt they'd do much good on a wild motor but for a bolt on engine, they help. charging issues. my lights would dim at idle. upgraded finally to a 145 amp alt. seems to help.

 

good mod expecially when slim on bolt on ideas. im going to do it as my last bolt on too

 

the only thing I noticed with mine was that the truck revved a slight quicker and easier...

I just got the crank pulley for mine.. found it on ebay for 90bucks LMAO You wont feel a gain WOT though, but it should be good for 5-10hp.. you dont start feeling gains unless its 15-20hp

 

You must need your butt dyno recalibrated. I can feel 10 HP with mine.

 

 

I know you said bolt on, but really gears and/or a slightly larger stall converter would make a world of difference off the line

 

asp pulleys were my last bolt on mod and i wish i did them earlier. no voltage problems for me with a moderate sterio system and electric fans