underdrive pulley? worth it?
03-31-2011, 04:36 PM
#1
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underdrive pulley? worth it? got a 408 build going BACK together after i had a lifter take a crap.... now bigger came vic jr intake ect .... still running the stock pulley.. now.. is an under drive pulley worth it? or ? no power steering but i just dont know if its worth it ... any suggestions on yes no and brand?
03-31-2011, 06:17 PM
#2
They're worth roughly a tenth and show gains on dyno from none to ten whp. ASP is lighter but the center is aluminum and it seems they fly appart if you have them on/off a couple of times. Powerbond sure looks impressive but they are slightly heavier. Powerbond does have nice deep belt grooves though to help with belt spitting.
Both are 25% under drive but the powerbond is only under driven on the accessories its stock for the AC whereas the ASP under drives ac as well iirc.
I bought a powerbond for my latest build
Both are 25% under drive but the powerbond is only under driven on the accessories its stock for the AC whereas the ASP under drives ac as well iirc.
I bought a powerbond for my latest build
03-31-2011, 06:23 PM
#3
If your going through all the trouble of building a new motor, a true ( Harmonic Balancer) would be going on my build,not a pully.Ati makes some of the best Underdrive balancers but they are about 400$.. Harmonic balancer will save your bearings from failing.
04-11-2011, 09:03 PM
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well i am not building another motor.. i had a lifter explode on me.. so i am having to get the block fixed... (lifter bore) and i figured since i am currently running the stock one i might as well upgrade?... thats all .. just didnt know what one to get
04-11-2011, 09:43 PM
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Powerbond is a harmonic dampener that comes with underdrive ratios. If you did not know, SDPC has a complete kit part # PBU1480-SS25 comes with Powerbond 25% underdrive pulley, you also get the necessary new shorter main drive belt, shorter a/c belt, and the SDPC high performance 8740 reusable balancer bolt for $199.99.
