serpentine belt???

[slo50notch]

so i just bought a 91 notchback 5.0 mustang. I got it pretty cheap, all i had to do was put it back together. it don't have a serpentine belt for the car. I just got the car running today. all that is left is the belt. what size do i need? as of right now it still has ac and the air pump on it. i was told the fan pulley is a lil underdrive pulley. i dunno, i'm new to the whole mustang scene. would it be better to just get a string and measure?

 

[Trefty]

Just go to a parts store and tell them you need a belt for a '91 Mustang with A/C. I don't think the underdrive pulley will make a difference.

 

[MGTKID]

Just measure what size belt you need with string and pull it tight. then take your measurement. Bring that to the parts store and they should be able to hook you up.

 

[TheBocSez]

Just replaced mine. Stock pulleys, AC, Smog, ect. The belt was 90.5"

 

[Flavadave4]

Just measure what size belt you need with string and pull it tight. then take your measurement. Bring that to the parts store and they should be able to hook you up.

Thats the best way to do it.......