Big idler pulley

[x MadMAX DIESEL]

I think I need a bigger idler pulley. I know ats sends some in there twin cp3 kits. Is that something I can buy at the dealership?

 

[redws6rocket]

I have used one off a 5.3, worked perfect.

 

[x MadMAX DIESEL]

Ill check out my suburban, might have to steal it for tomorrow. Thanks!

 

[x MadMAX DIESEL]

I put a 3.5 inch pulley off a 5.3 and now it rubs. This is with a 138" belt keep in mind, because the 136" belt was to short with the stock size idler pulleys

 

[x MadMAX DIESEL]

Just put the stock ones back on well see if it slips...