Smog Removal on 84 GMC - The 1947 - Present Chevrolet & GMC Truck Message Board Network

abrahamseven · 05-05-2009, 09:19 AM

Hello everybody, I have got a 1984 GMC 2500 4X4 with a 350 with 115,000 miles on it and it runs good and starts fast but I want to improve it's performance by removing all the smog stuff. It is not a California GMC so it does not have the ECM, so has anybody did this to there GMC/ Chevy ? Did it run better? How did you go about doing it ? Any problems ? I appreciate any and all responses' Thank you.

steve

JohnC · 05-05-2009, 09:22 AM

It should run better for sure. I started on mine, but it is on the back burner for an engine replacement. No since in messing with it if I'm going to be putting a new motor in anyways. Easiest thing to do is just start removing the stuff.

05-05-2009, 09:19 AM	#1
abrahamseven Registered User Join Date: Oct 2004 Location: Fruitland, Idaho Posts: 68	Smog Removal on 84 GMC Hello everybody, I have got a 1984 GMC 2500 4X4 with a 350 with 115,000 miles on it and it runs good and starts fast but I want to improve it's performance by removing all the smog stuff. It is not a California GMC so it does not have the ECM, so has anybody did this to there GMC/ Chevy ? Did it run better? How did you go about doing it ? Any problems ? I appreciate any and all responses' Thank you. steve

05-05-2009, 09:22 AM	#2
JohnC Registered User Join Date: Feb 2009 Location: Oklahoma Posts: 7,461	Re: Smog Removal on 84 GMC It should run better for sure. I started on mine, but it is on the back burner for an engine replacement. No since in messing with it if I'm going to be putting a new motor in anyways. Easiest thing to do is just start removing the stuff.



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