Help to determine Belt Size for Paxton

[ADakotaRTGuy]

Ok, I was running the whole stock set up and ran a 63.5 belt. Stock crank was 7.25 and the blower pulley was 3.25. Now the crank pulley is 8.25 and the blower pulley is 3.5. So anyone have any idea on what belt size I should put on there? None of the autoparts stores have any of the round about sizes to even try them on.

[bad360rt]

I forget what size I was running when I had the larger crank pulley, but I had to do the string trick to find a belt. Just route a string and measure it, make sure to pull the tensioner to the side so you can get the shortest belt on there.

[ADakotaRTGuy]

Yea I would need a second hand in order to pull the tensioner to the position it would be about. Don't really want to pull it off. I might call paxton see if they can tell me.