i've been thinking about getting an underdrive crank puley from unorthodox racing, and accessorie pulleys from AEM. the problem is:

-1st, the Unorthodox Underdrive pulley is exactly that, and underdrive pulley, it's smaller than the OEM pulley, and the AEM accessorie pulleys are oversized (neither one is over/undersized by much), but if i get them both, do you think i willbe able to run the stock accessorie belts, i know i can make up for a little slack with the alternator and the tensioner, but i don't want the belts to be too large or small. I figure if one is smaller and one is bigger, they should even-out, as far as belt size is concerned; what do you think??

-2nd: I dono if the pulleys will improve my horsepower enough to spend the money, i need more power, but i don't want to spend like 350 bucks on 3 hp, know what i mean, i'ld rather save for something else.

thanks for the help guys!!

 

save for something else. think about it, your engine produces enough power to thrust about 2000+ pounds of car. the rotational mass of a couple of pulleys isn't really of much concern to it.