I did a search, I promise. Couldn't find the answer I need. I have a 5.3 just switched from a 3.4 to a 3.2 pulley. I swear it's slipping. I don't hear the screech you would expect but I lose power after the 1-2 shift as if I ran out of fuel then a second later it's great again. No screech. It is aGoodyear, Gatorback. I don't know the length but I had no issues with it when I had the 3.4 on. The belt has the number 6PK255 stamped on it if that helps. The belt tensioner is only 1/4" away from being fully maxed out and hitting the stop so I think I could get a smaller belt on there pretty easy. My question is, What size belt do I have and is what I need or should I go one smaller. Thanks!

 

ttt. I need to know if I should buy a belt today. I don't have any logging software to check for anything else.

 

go to a store that sales the belts and give them that number and tell them you want one exactly 1 inch shorter. might could go with 2 inches not sure though

 

That part number you listed isn't a gatorback part number. It sounds more like a metric part number.

The Gatorback belt that is supposed to be a factory replacement is:
4060922 for 105A Alternator or
4060930 for 130A Alternator

they are 92-2/10" and 93" respectivley. Hope that helps.

 

It's the only number I could read on the belt. It does say Goodyear Gatorback in yellow leters on it. Does anyone else have a 5.3/Radix with a 3.2 pulley? If so what belt length are you using and what P/N is it? Thanks

 

I have the 3.25 pulley on mine and the Gatorback. Here is the part number: 4061105 and another number which is 6PK2805. Not sure of the size, I think it may be 110.5 inches. There is plenty left on the tensioner as well. Good luck man.

 

Thanks! that's exactly what I was looking for. I'll check it out tomorrow.