ryan_89_mustang

I want to bypass the pump with a shorter belt what size could I use. When I looked it up I saw that 84.5" was the proper size but could I get away with a 84 or 85 or another length? It is very hard for me to track down a 84.5" where I am.
Also I can leave the pump on there and it won't get in the way right?

ryan_89_mustang

does anyone know what belt they used with an ac car with just no smog pump?

dj1203

here is a diagram i found

http://www.moddedmustangs.com/forums...ng_166_169.jpg

dj1203

a better diagram

https://mustangforums.com/forum/5-0-...ny-issues.html

ryan_89_mustang

I know i need a 84.5 but i am wondering if i can use a 84 or 85 and be fine because the only 84.5 belt i can find here is $77

19905.0stang

i would just get it tuned out

nseoi

i would go with the 84". it shouldnt strain the tensioner too much more

ryan_89_mustang

would you mind explaining that one to me? haha

ryan_89_mustang

Yeah I'm going to give that a go and see what happens.

j-wigg

you can keep the same size belt with the smog pump on if you want. take all the guts out of the smog pump. //or use a smog pump delete pulley. if youre not going to use it, i'd take it off (cleans up some room). i cant remember the size belt i had to use exactly. i just sat up at autozone and tried a few different sizes until i found one that was 1 size smaller then where the belt rubbed under the tensioner. i have underdrives on the crank and waterpump and i think mine was in the the 70's". i dont remember it being in the 80's but it was a long day trying to find the perfect size. good luck. if you have any other questions with it just ask. just went through this about a month ago.