Belt length for 2.9 Whipple

[gmtech]

Gonna be running a 2.9 whipple, stock lower with billetflow idlers and either a 3.375 or 3.25 upper. Anybody running that pulley combo?? What belt length should I order?

 

[mkb116]

I'm looking for a belt for this same setup... 3.25 whipple pulley. The only difference is I have metco idlers, three 100's and a 90, and a thump tensioner but I believe that the same size as stock.

 

[BoostedByV]

i'm looking for a belt for this same setup... 3.25 whipple pulley. The only difference is i have metco idlers, three 100's and a 90, and a thump tensioner but i believe that the same size as stock.

x2

 

[gmtech]

Yea I will be running 3 90mm's and a 100mm, surely somebody has run this, or close to this setup.

 

[wesking1]

I was running a 77.25 inch gatorback with a 3.2 upper stock lower and metco idlers 1-100mm and 3-90mm part number is 4080772

 

[wesking1]

I was running a 77.25 inch gatorback with a 3.2 upper stock lower and metco idlers 1-100mm and 3-90mm part number is 4080772

 

[PWORLDSTANG]

Gates K080774. I ran that belt size for years with absolutely no belt slip on a 3.25'' pulley.

 

[wesking1]

Gates K080774. I ran that belt size for years with absolutely no belt slip on a 3.25'' pulley.

is this belt green like the hd? i run the gates hd belt for my e85 tune

 

[PWORLDSTANG]

is this belt green like the hd? i run the gates hd belt for my e85 tune

Nope, standard black belt. I've never had issues with the black belts slipping. The only issue that I've had with them is that they develop a squeek that gets annoying as hell until you replace it.