Roxas

iTrader: (88)

Hey everyone, I just picked up a BBK Underdrive pulley and was wondering which belt size it would require. I know the SLP Underdrive Pulley uses 2 different belts, but Im not quite sure about this one. I will not be running the BBK Underdrive Pulley kit ( http://www.ws6project.com/user_stor/...ve-pulley-kit/ )

I will just be using the crank/balancer pulley. Its alittle heavy, 11.5 pounds with tall walls. Thanks for the help!

Roxas

iTrader: (88)

Using search I found: https://ls1tech.com/forums/new-ls1-o...hat-belts.html

Serpentine belt: 19-760K6
A/C belt : 19-k04378
ARP Bolt : 12557840

Would this be correct? Granted the pulley mentioned in that thread is a PowerBond.

JKearney30

iTrader: (2)

According to the instructions on BBK's kit you need a 77" belt and a 37.7" belt (if you did use both)

The part numbers you would need in that case:
77" belt - k060770
37.7" belt - k040378 (this is actually 37.8" long but wont will be just fine.)

JKearney30

iTrader: (2)

http://static.summitracing.com/globa...s/bbk-1592.pdf

Here is the instructions for you.

Roxas

iTrader: (88)

Thanks for the info! The K040378 should fit then, but Im still not sure about the K060770 since I am not using their alternator pulley.