I'm throwing an 87-94 350 engine from a truck into my Firebird and I'm trashing the air pump system and the a/c and I'm looking for bypass pulleys for those. I found an a/c one on another website for $30 but haven't found one for the air pump, if I even need it.

Let me know what you've got. Thanks.

 

1) Smog pump(I gutted it and regreased to be a free spinning pulley cheaper then the delete pulley) It functions as a bypass pulley while retaining the stock emissions look for any possible spot checks.. This is from a 1989 Camaro 305 but will work on a 350.... Make offer https://www.thirdgen.org/forums/engi...arts-sale.html

 

Well, since I can't find any belt diagrams on my car anywhere, I'm still trying to figure out if I even need a bypass pulley for these two parts. Or if you could tell me, that'd be cool too.

I'll think about it and let you know about that air pump.

 

Your going to need a bypass pulley for at least the AC. The smog pump i have will provide the factory emissions control look for smog police

 

I don't have emissions standards here in good 'ol Indiana