under drive pulley
#2
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They can be worth it.. I put one on my car more for the fact that I got one at a deal I couldn't pass up on...
If you get a good one, they do sometimes offer better vibration damping which could help your bearings last a bit longer, theoretically that is.
If you get a good one, they do sometimes offer better vibration damping which could help your bearings last a bit longer, theoretically that is.
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#9
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i researched it before i bought my March 25% and couldn't find any real evidence that it made more power.....alot of folks said they ran the same times at the track before/after UD installation.....i can't really give any performance feedback on mine because i did the pulley, LS6 intake, headers, and true duals all at the same time.....only thing i can say is now my belt squeaks & chirps until the car warms up and it sucks, i kind of wish i had the stocker and my $225 back
#12
i have seen dyno test's of 7-10 hp. that wont make a diff at the track but if you add 10hp here and there it will make a differance. just don't expect to feel a huge differance when you put it on.
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i have seen dyno test's of 7-10 hp. that wont make a diff at the track but if you add 10hp here and there it will make a differance. just don't expect to feel a huge differance when you put it on.
under driving the alternator? Hmmm... Do your headlights go dim at night when idling at a red light?
...and slow turn signals. Don't know if it was really worth it as this was my first UD pulley.
but hey 10hp is 10 hp.
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The ASP UD pulley's are nice. Felt a little faster throttle response and picked up almost 2 tenths at the track with bolt-ons. I put one on my 6.0 truck and didnt notice any difference at all but then again its a 6800# truck LOL