belt size suggestion

[gibsonboy3000]

Just wondering if anyones using the same pulley combo as me, 3" upper, 4lb lower, 4 pcs billet flow idlers soon to go on (1-90mm, 3-100mm), stock alternator pulley. I just purchaced the idlers so i need to know what belt size to use. I already looked up cobrabobs belt guide and the closest thing i can see to my combo is a 79.7" belt. Any help is appreciated, thanks.

 

[oldmodman]

Isn't your combo listed? It's a very common combination.

What blower are you using? That can make a difference since the larger blowers sit up higher off the engine and require a longer belt.

 

[cobracide]

Belt Selection Guide

 

[gibsonboy3000]

Isn't your combo listed? It's a very common combination.

What blower are you using? That can make a difference since the larger blowers sit up higher off the engine and require a longer belt.

stock eaton, cobrabob has my combo listed but with a bigger alternator pulley... :shrug:

 

[gibsonboy3000]

Belt Selection Guide

thank you sir, but ive looked at this chart up and down...