i just ordered new set of underdrive pulleys i got the jet performance pulleys that comes with two but i also saw bbk set with 3 pulleys and i dono if they were performance pulleys or not does anyone know lol and also next question anyone know the new size belt im gonna need with new pulleys from jet i dono if damn company send a cross referance number and i dont wanna run back and forth two the story guessing on belt sizes i live 40 miles from napa one shot thing for me lol and does anyone know what horse power gains are being pulled from new pulley?

 

what kind of truck do you have...?


also toss that tbs out as its a pointless weight

 

i get to differ alot say it does not but i could feel and see the difference and i have a 1998 f150 4.6