What size belt?

[89stang10sec]

What size serpentine belt do I need to run everything but the smog pump in my 1989 GT? I still have AC, power steering, alt, water pump, crank. Thanks.

 

[Nitrous Tommy]

What size serpentine belt do I need to run everything but the smog pump in my 1989 GT? I still have AC, power steering, alt, water pump, crank. Thanks.

take your old belt, cut it, put it around everything and mark it, add 2 inch's. then go to the part store thats all you need to do