kcsoa22

My underdrives came with allen heads too. Plus 3 on the allen heads!

whiteout 5.0

yea? i had the same problem. so i went out to the store and got allen key ones. then i STILL COULDNT GET IT ON cause the pocket everyday allen set that flips open wont give you enough space to tighten them down you need one with a long shank. i got the hex heads on there i put the bolts on the socket and threaded them in sideways and they walked themselves in straight and somehow didnt slip off i guess i got lucky.

ZachW04Stang

My underdrive pulley came with allen head bolts. Made things 10 times more easier since I tried putting the stock bolts in at first.

5.0stanger

They come with socket head cap screws for that reason, too tight to fit a normal hex head bolt.

my77stang

see how smart i am? hell i dont even have UDP and i knew this answer before anyone else[8D][8D][8D][8D][8D]

Li0nHart

55 ft/lbs is nothing a decent socket can't handle....you could always replace the bolts with allen or torx heads.

VigCS

No, they're the bolts that were on the stock pulley. I honestly don't know what they came with....I was digging through my box of parts and said "Woah..UDPS!". Didn't even know I had them, no bolts included, though.

my77stang

time to go to ace hardware, just make sure the bolts you get are HARD

jslove1408

I use a thinwall socket everyday at work to torque down lugnuts mainly to 100ft/lbs. with no problem.

LTnone

I had to delay my project overnight because of those stupid things too[:@] I got the allens