Hey guys i have a 2000 silverado with a d1sc procharger i cant get the right belt part number anyone help...i have a 3.4 pully on it.. all the other pullys are stock..

 

i have a 108in belt on there now and when i get on it it blows the belt off

 

What's the part number of the belt you have now? Also do you have the old style procharger bracket with two idler pullies?

 

dont have the part number off hand its at home and yes i have the two idle pullys

 

I run a 3.4 pulley with a 109.9" belt from napa and my tensioner is almost closed with this belt.

I don't know how you could get a 108" belt on there.

 

well I found that my alt. was a little lose tighten it down and didn't throw belt.. how much boost u running with ur setup? I have a 383 stoker with 1 7/7 headers 90mm tb.. custom cam and can only get 8 lbs with that pulley..

 

I just ordered a new pulley from 928 Motorsports - From Road to Race, 928 Performance is 928 Motorsports®
Do the math on their calculator and pick a smaller pulley.
Mine has a 3.35" pulley and I'm dropping to a 3.15"