Hotroddaddy

I have a 1991 5.8 and I want to get rid of the smog pump
canisters, etc. can I do this with out screwing up the EFI?

Thanks, KJ!

Basswacker

I new a guy that got rid of all the stuff egr smog pump and all the other emissions BS. He was getting 22+ mpg he just had to get a smaller fan belt. Not sure if he threw codes tho

DeahlSC

You'll have no problems with the EFI. After my Explorer swap since it had GT40P heads I pulled the smog pump, and everything connected to it. Plugged the vacuum lines and shoved a piece of tubing in the y-pipe, no problems with a CEL or anything at all. Just used a shorter belt (87.5) but that's on a 302HO. Just take the smog pump off and wrap string around all the pulleys and you'll find your right size.

May I ask why get rid of it though?

~Stephen Deahl

351stroker

Easily. Shorter belt, remove the smog pump and all associated hardware, you will need 5/8 course thread plugs or bolts to block the holes on the back of the heads. That smog pump is an Effin parasite! And when it gets plugged up and you start hammering down it will give the loudest backfire!! Like a shotgun, yeah!!