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Author Topic: Eliminating smog lines, canisters  (Read 25662 times)

Offline Irish_Alley

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Re: Eliminating smog lines, canisters
« Reply #15 on: November 13, 2010, 05:21:33 pm »
Lol I wonder if you can get away with true duals then have a h pipe with one cat on it
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Offline Layne

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Re: Eliminating smog lines, canisters
« Reply #16 on: November 13, 2010, 05:29:59 pm »
A cat for the H? Lol
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Offline VileZambonie

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Re: Eliminating smog lines, canisters
« Reply #17 on: November 13, 2010, 11:23:26 pm »
Quote from: 1979C20 on November 13, 2010, 04:49:53 pm
Well, sadly, nobody has answered my question yet.

Where was your question?
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Offline Dr_Snooz

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Re: Eliminating smog lines, canisters
« Reply #18 on: November 14, 2010, 01:06:50 am »
I'd keep the PCV stuff too. It helps reduce sludge formation in the block, if I understand it correctly. I'd probably ditch the smog pump. It's big and ugly and I'm not convinced it does any earthly good. I would try to keep the EGR though. I don't think it really hurts anything and makes it less smelly for people driving behind you. It also helps to make your engine burn more cleanly and efficiently, which is never a bad thing.
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Offline 1979C20

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Re: Eliminating smog lines, canisters
« Reply #19 on: November 14, 2010, 01:51:46 am »
Grim 82, Very helpful. Thank you.

Since I have no emissions testing, I have headers into glasspacks and dumped out a couple of inches in front of the fuel tanks, inside the frame rails, pointing at a 45degree angle towards the outside/road. Sounds great!

Vile, the question was 'what vacuum lines can I eliminate'.

Snooz, The pcv isnt a big issue to keep for me since its right next to the carb. And, the smog pump is definitely coming off, I'm just waiting on a belt without the pump. And the EGR is staying. Same as the pcv, its right by the carb. And it helps fend off detonation/pinging. And, there usually isn't anyone behind me (HAHAHA). So I'm not worried about that one.

Thanks guys. I only have 1 more question. There is a 3/8ths vacuum line next to my power steering lines and along the inside of my frame rail below my steering shaft. What are those for and are they important or necessary in any way?
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Offline 1979C20

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Re: Eliminating smog lines, canisters
« Reply #20 on: November 14, 2010, 01:56:57 am »
Ohhhhhh wow. I just thought of one more fairly important question. What about the open vacuum ports that will be left on my carb??? :O
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1979 SCLB C20 Q-jet 350 SM465 14b F.F. 4.10 G80
1989 GMC Suburban V2500 TBI350 TH400 4in lift 35's 14b SF

Offline Irish_Alley

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Re: Eliminating smog lines, canisters
« Reply #21 on: November 14, 2010, 04:16:06 am »
Parts store sell vacuum caps some have color some are black. They come in a variety pack you wana keep the pcv, brake booster and vacuum advance on the distributor all rest can be gotten rid of. You probably still have the egr so keep that one to.
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When you have eliminated the impossible, whatever remains, however improbable, must be the truth ~Sherlock Holmes

Offline Russ130

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Re: Eliminating smog lines, canisters
« Reply #22 on: November 14, 2010, 08:05:39 am »
Don't forget vacumn for the tranny if you need it too. Seems I recall all 3/4 ton and up were exempt from emissions back in '79 except of course California vehicles. That's why they never had gas mileage on the stickers they were EPA exempt. 1/2 ton is another story though.
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Offline 1980c10

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Re: Eliminating smog lines, canisters
« Reply #23 on: November 14, 2010, 05:30:58 pm »
I don't run the a.i.r. pump, egr, canister or cats and I am a free man.
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