NotsofastC6

2009 LS3, I ordered the SLP 25% underdrive pulley. I have searched and searched and I cannot seem to come across some consistent numbers for the belts needed for the UD harmonic balancer. Sorry if this has been covered before, but I really need info.

SLP's website says:
1997-2013 C5/C6 Corvette
Main Belt: Gates 6PK1955 or Equivalent
Accessory Belt: Gates 4PK0990 or Equivalent - See more at: http://www.slponline.com/product/100....ouspgc1f.dpuf


If you go into the installation instructions is says something completely different


C5/C6 Corvette
Main Belt: Gates 6PK1900 or Equivalent
Accessory Belt: Gates 4PK1040 ore Equivalent


Does anybody know for certain what the proper belts are? OR am I going to have to play musical belts to figure it out?

NotsofastC6

Bump

tennblkc6

if all else fails you could use a piece of string and take it to your local parts store. they have a tool to measure belts so you could have them pull the belts you have listed and compare the belt sizes vs the length of the string.

iToast

I ran into the same problem and had to contact vengeance racing and ask them. I wish I could remember to help but I would contact a vendor that sells them and ask