Smog system removal
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Junior Member
Joined: Jun 2008
Posts: 27
Likes: 0
From: Holmdel New Jersey
Car: 87 Iroc
Engine: 5.7 TPI
Transmission: 700r4
Axle/Gears: 3.73
Re: Smog system removal
What kind of problems would it cause if the air pump is removed? Im trouble-shooting
Thread Starter
Junior Member
Joined: Jun 2008
Posts: 27
Likes: 0
From: Holmdel New Jersey
Car: 87 Iroc
Engine: 5.7 TPI
Transmission: 700r4
Axle/Gears: 3.73
Re: Smog system removal
Maybe you can help me. I have a low rpm surge only at low r's and idle. Iac valve is new but either wide open or slammed shut, o2 sensor also new but reading that the car never comes up to temp and floods the motor. Any ideas im baffled?
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Joined: Feb 2001
Posts: 938
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From: Hinesville, GA USA
Car: '86 IROC-Z/'94 Z28
Engine: 350 LT1/382 LT1
Transmission: 4L60-E/T-56
Axle/Gears: 3.45/3.42 (soon 4.10)
Re: Smog system removal
Many things can cause a surge. Need more info to narrow it down. Double check all your base adjustments (timing, minimum idle air rate, TPS) are set properly to spec, your codes if you have any, your fuel pressure is ok, and your prom is correct then report back.
Joined: Apr 2004
Posts: 3,001
Likes: 62
From: Salt Lake City, Utah
Car: 1988 camaro "SS"/ 1991 305/T5
Engine: 383 LT1 in progress/LT1TBI 355 soon
Transmission: Probuilt 700R4 3600 stall/ T5
Axle/Gears: Moser axles, 3.42 Eaton Posi
Re: Smog system removal
It's VERY simple to delete the smog system from your car. Just know that if you live in a place that has smog checks you could get dinged for it. Here's what you'll need......
Eight 1/4 inch pipe plugs from either true value or home depot. Expect to spend about $13 for them all
a 967K6 belt from Autozone or the outlet of your choice. Basically ask for a 96.7 inch long six rib serpentine belt. prices vary from $20-$35 dollars depending on the belt you get. There is a different belt routing but it's very simple. I'll draw you up a pic when I get home tonight from work.
And for the most part thats it for the SMOG pump stuff.
Eight 1/4 inch pipe plugs from either true value or home depot. Expect to spend about $13 for them all
a 967K6 belt from Autozone or the outlet of your choice. Basically ask for a 96.7 inch long six rib serpentine belt. prices vary from $20-$35 dollars depending on the belt you get. There is a different belt routing but it's very simple. I'll draw you up a pic when I get home tonight from work.
And for the most part thats it for the SMOG pump stuff.
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Member
Joined: Aug 2008
Posts: 394
Likes: 2
From: SW Ohio
Car: 1989 IROC-Z28
Engine: L98 - 350 TPI
Transmission: MD8 - 700R4
Axle/Gears: GH3/G80 - 2.77 POSI
Re: Smog system removal
I have a L98 and removed everything but the pump but it needs to go... I would like to see this picture of the belt reroute.
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Posts: 1,410
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From: Location, Location!
Car: 92 T/A 'vert
Engine: Mild .040 over L98 4 bolt mains
Transmission: Mostly stock 700R4, 2600 Vigilante
Axle/Gears: LS1 3.42
Member
Joined: Aug 2008
Posts: 394
Likes: 2
From: SW Ohio
Car: 1989 IROC-Z28
Engine: L98 - 350 TPI
Transmission: MD8 - 700R4
Axle/Gears: GH3/G80 - 2.77 POSI
Re: Smog system removal
Thanks so much! On my list of "to do" today! Everything else is gone but the pump.
Member
Joined: Aug 2008
Posts: 394
Likes: 2
From: SW Ohio
Car: 1989 IROC-Z28
Engine: L98 - 350 TPI
Transmission: MD8 - 700R4
Axle/Gears: GH3/G80 - 2.77 POSI
Re: Smog system removal
Update: smog pump out. Took about 10 minutes once I realized you need to remove the pulley to remove the pump.
Only thing left of the system are the two connectors that plugged into the black box. I just hid them. They run into the split loom so I'm not taking them out.
Only thing left of the system are the two connectors that plugged into the black box. I just hid them. They run into the split loom so I'm not taking them out.
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