Jly154

Hey guys so my smog pump on my 94 gt went out and instead of replacing it (I live in non emission state) I want to just bypass it does anybody know what size belt I need to do this?

nivie1299

Summitt racing has a pulley to put in its place for around $50 that you can continue to use your same belt. Put one on my 91 and it works great.

Jly154

How much of a difference did it make. I did that to my pickup and I could tell it had a little more get up and go

nivie1299

they say about 12hp gain. You can tell a little more response

Jly154

Sweet I also got an under drive pulley kit same one on my pickup made a big difference on throttle response

88 orangepeel notch

Welcome

Jly154

So ended up just getting a smaller belt (I wanna enjoy my baby as much as I can before the snow hits) and put it on today and afterwards it started idling real rough it almost sounds like it's got a cam (which it dosent) I haven't yet had the time to block off the smog port/piping surly this is what is causing rough idle?

nivie1299

If the vacuum lines are not properly taken care of it can.

Jly154

All of the vacuume lines are still connected to everything but I think I know the culprit while replacing the Pcv valve last week I broke one and thought I had fixed it but maybe not I guess we'll find out in just a bit thank you!

Jly154

So I replaced the broken vacuume line and it's running good now