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Emission control stuff gone

Forum: C3 HVAC, Fuel, Emissions, and Exhaust

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Emission control stuff gone

Posted: 1/2/15 7:09pmMessage 1 of 11
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cinor
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Tisdale, Canada
Joined: 12/24/2013
Posts: 423
Vette(s): 1975 L48 Stingray 1992 LT1
So it is obvious that the emission part of the 75 has been removed, probably long ago.  Sooo my question is, is there a benefit to replacing it or not, it would simply be a lot easier to leave it all off, we do not have all the same rules as some of your states do so it would only be done if it changed how the car performed.  What are your thoughts?

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Re: Emission control stuff gone

Posted: 1/2/15 8:21pmMessage 2 of 11
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Adams' Apple
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Duncanville, TX - USA
Joined: 11/8/2003
Posts: 22714
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas
If you're not trying to keep the car original, and your laws don't require any of it, I say "Good Riddance"!! Wink
That crap won't actually help performance at all.

Joel Adams
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Re: Emission control stuff gone

Posted: 1/2/15 10:07pmMessage 3 of 11
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F4Gary
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Grapevine, TX - USA
Joined: 8/26/2006
Posts: 1537
Vette(s): 1972 LT-1 convertible with factory air. 2017 Black Rose Grand Sport M7 convertible.
+1 on leaving it off. Just clutters up the engine compartment.

   

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Re: Emission control stuff gone

Posted: 1/2/15 10:07pmMessage 4 of 11
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coles78
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Lock Haven, PA - USA
Joined: 1/1/2015
Posts: 1
Vette(s): 1978 Corvette
My personnel opinion about emissions control stuff is that they represent everything that went wrong in the 70s with performance. I have gotten rid of that power sucking equiptment long ago. I know there are a lot of purists that disagree with my thoughts, but my vette will be far from stock as far as the motor goes. If done right the motor will thank you.
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Re: Emission control stuff gone

Posted: 1/3/15 6:35amMessage 5 of 11
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cinor
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Tisdale, Canada
Joined: 12/24/2013
Posts: 423
Vette(s): 1975 L48 Stingray 1992 LT1
Thanks guys.  That's pretty much how I felt about it, good to hear you agree.  Car seems to be all original so far except for the usual little things, but the car when I'm done will be what I want and that doesn't necessarily mean original (assuming I can afford what I want)

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Re: Emission control stuff gone

Posted: 1/3/15 7:09amMessage 6 of 11
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Gunslinger
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Frederick, MD - USA
Joined: 9/8/2003
Posts: 3398
Vette(s): 1969 convertible L71 427/435 4-speed black interior
When I had a '78 L82 the AIR was already gone. After a while I removed the EGR and the rest of the smog equipment...the car ran smoother and stronger. The cleaner appearing engine bay was a bonus.
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Re: Emission control stuff gone

Posted: 1/3/15 8:59amMessage 7 of 11
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Sarge81
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WEST SENECA, NY - USA
Joined: 12/3/2001
Posts: 2381
Vette(s): 1981 Blue Ice Met. w/pearl ghost flames TKO500 5speed. LS1 Swap 3.45 Dana 44.
I agree with the above posters...no rules or laws like we have here in the Republik of Amerika.Ditch it. 


GEN III 5.7L "LS6" Engine swap
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Re: Emission control stuff gone

Posted: 1/5/15 10:43amMessage 8 of 11
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JMB
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Cohasset, MA - USA
Joined: 1/5/2004
Posts: 36
Vette(s): 1968 coupe bought in 1999, 2nd owner, 427 custom built, 4 speed (M20), 3:36 posi rear end, Recaro seats, Intro wheels, Nitto tires, Flowmasters, etc. Painted nite race metallic blue.
Adams' Apple said: If you're not trying to keep the car original, and your laws don't require any of it, I say "Good Riddance"!! Wink
That crap won't actually help performance at all.



I agree.

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Re: Emission control stuff gone

Posted: 4/28/21 4:39pmMessage 9 of 11
e
eusurp
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Jaffrey, NH - USA
Joined: 4/28/2021
Posts: 1
Vette(s): 1980 T Top Maroon 350 Corvette

I have emissions/vacuum question.  With so much vacuum operated stuff---dampers---headlights...whatever on my 80 C3...will removing the emission stuff affect those operations at all?  I put a block off plate on the EGR and assume I ahve to jsut plug the vac lines that are associated with that...air pump....other vac parts?  HUH???  Quite a few lines to terminate or fully remove/plug/ reroute....what manual do you reference for that stuff?

 

Thanks in advance....rear emergency brake rebuild was a snap compared to replacing the heater core and blower....yikes!!

 

Soup

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Re: Emission control stuff gone

Posted: 4/3/22 4:29pmMessage 10 of 11
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1981vetteguy
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Strykersville, NY - USA
Joined: 3/27/2022
Posts: 5
Vette(s): 1981 corvette

Does anyone have any idea what each of the vacuum ports do on the front of an 81 carburetor are? I’m trying to figure out what needs to be plugged and capped on the system.

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