belt size???? HELP???

[04svt]

Hey guys i recently purchased a billet flow 2.76 sc pully and 3 piece idler set. i dont have my car at home so i dont kn ow the belt number... Billetflow says that this set up requires a stock belt. thats fine I was going to purchase a gatorback belt but i have two different sizes im finding online. billetflow says its a 4080750 and couple other sources such as cobrabob says 4080740???? i need some help thanks

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[superninja]

are they 90mm idlers?and you didnt go with the aux idler up top? should be the stock belt then...i played the belt guessing game, 2.75 upper, 3 90mm idlers + 100mm aux idler, a 3.5 alt, #6 lower. now i have 5 extra belts.

 

[Wiked03]

Hey guys i recently purchased a billet flow 2.76 sc pully and 3 piece idler set. i dont have my car at home so i dont kn ow the belt number... Billetflow says that this set up requires a stock belt. thats fine I was going to purchase a gatorback belt but i have two different sizes im finding online. billetflow says its a 4080750 and couple other sources such as cobrabob says 4080740???? i need some help thanks

I have 2.76 upper, no aux idler, 1 90 mm billetflow idler, and 2 100 mm billetflow idlers and use a 74" belt (4080740.)

 

[04svt]

sorry for the lack of info i have a 2.76, 1. 92mm 3. 100mm hope this helps so you can help me..

 

[BIGONTS]

I had that set up for like 600miles and put a 4lb lower on and new belt. I still have the old Gates (whick Billetflow recommends) belt that is in perfect condition if you are interested. I'm out south too. Let me know.

 

[Jpatte]

sorry for the lack of info i have a 2.76, 1. 92mm 3. 100mm hope this helps so you can help me..

2.76.........75.1"...Gates.K080751......Gator...4080750 (with 100mm Idler) (Stock Belt)


I just emailed Billetflow on this topic and asked where each pulley went. See pic.

You should be running a stock belt if your using a Idler


John

 

[04svt]

Thanks alot that is by far the most helpful peice of info i have recieved thanks again Chris

 

[blubyu]

That should do it. I have the same setup but my SC pulley is 2.8. I run 75.5.

75.1 worked, but it took all the play out of the tensioner.

 

[Cobra Dude]

Hey guys i recently purchased a billet flow 2.76 sc pully and 3 piece idler set. i dont have my car at home so i dont kn ow the belt number... Billetflow says that this set up requires a stock belt. thats fine I was going to purchase a gatorback belt but i have two different sizes im finding online. billetflow says its a 4080750 and couple other sources such as cobrabob says 4080740???? i need some help thanks

I have the billet flow 2.76 SC Pully without the idler set and use a Gates K080740 or a Goodyear 4080740 ($25.99). I have been running since 2003 without idlers and I have no slipage. Amazon Racing and Sutton have dyno the car and the numbers have been good without idlers.