89 tbi egr/headers? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

mike88a · 10-02-2019, 01:32 PM

I have an 89 tbi going in to my 87. I want to add headers in the most cost effective way possible. What do I do about the egr?

mike88a · 10-02-2019, 01:34 PM

Dropping an 89 tbi motor into my 87 and want to add headers int eh most cost effective way I can. What do I do about the egr?

95 S_Trucker · 10-02-2019, 01:55 PM

Quote:

Originally Posted by mike88a

I have an 89 tbi going in to my 87. I want to add headers in the most cost effective way possible. What do I do about the egr?

There aren't any egr tubes on 87-95 engines. The valve gets it exhaust source from the exhaust crossover in the intake manifold.

There may be air injection tubes in the exhaust manifolds. Any chance that's what you see?

SCOTI · 10-02-2019, 03:15 PM

Quote:

Originally Posted by mike88a

Dropping an 89 tbi motor into my 87 and want to add headers int eh most cost effective way I can. What do I do about the egr?

The EGR is part of the ECM loop so you need to keep it or have it deleted by tuning (new chip). Whatever headers fit your chassis will get the job done. You just need an o2 port near the collector.

mike88a · 10-02-2019, 03:19 PM

Quote:

Originally Posted by 95 S_Trucker

There aren't any egr tubes on 87-95 engines. The valve gets it exhaust source from the exhaust crossover in the intake manifold.

There may be air injection tubes in the exhaust manifolds. Any chance that's what you see?

Possibly. I just keep seeing headers that say for models without egr.

mike88a · 10-02-2019, 04:37 PM

Quote:

Originally Posted by SCOTI

The EGR is part of the ECM loop so you need to keep it or have it deleted by tuning (new chip). Whatever headers fit your chassis will get the job done. You just need an o2 port near the collector.

Perfect. Thanks

mike88a · 10-02-2019, 04:38 PM

Got it all sorted out. I was thinking about it all wrong.

sweetk30 · 10-02-2019, 05:04 PM

if full length headers its best to swap to a heated o2 sensor . lots of threads on this for your reading .

i my self dont care for headers . lots of extra heat and noise under the hood .

SCOTI · 10-02-2019, 05:58 PM

Quote:

Originally Posted by sweetk30

if full length headers its best to swap to a heated o2 sensor . lots of threads on this for your reading .

i my self dont care for headers . lots of extra heat and noise under the hood .

Heat for sure. Mine are ceramic coated & still put off some serious temps. I haven't had any issues on the noise level though. Are they louder than cast iron manifolds? Yep. But I don't notice any difference w/the hood shut. I also ground the head flanges true & made my own 3/8" thick collector flanges so zero leaks vs. the repeat leaker on my exhaust manifolds (pass side).

mike88a · 10-02-2019, 06:49 PM

Quote:

Originally Posted by sweetk30

if full length headers its best to swap to a heated o2 sensor . lots of threads on this for your reading .

i my self dont care for headers . lots of extra heat and noise under the hood .

Thanks for the help. It is my sons build. We are going mid length headers with a o2 bung in the collector so I think a regular o2 sensor will work. The noise is part of the fun and the heat is not that bad. But that is the beauty of our trucks to each his own. I truly appreciate your assistance!

mike88a · 10-02-2019, 06:51 PM

Quote:

Originally Posted by SCOTI

Heat for sure. Mine are ceramic coated & still put off some serious temps. I haven't had any issues on the noise level though. Are they louder than cast iron manifolds? Yep. But I don't notice any difference w/the hood shut. I also ground the head flanges true & made my own 3/8" thick collector flanges so zero leaks vs. the repeat leaker on my exhaust manifolds (pass side).

I know I did ceramic coated in my 67 to help with the heat issue but i don't think it made any difference. All in all if you keep the wires away its not that bad.

Thanks for your input!

Stormin08 · 10-03-2019, 07:38 AM

good deal, i just sold a set with air tubes ( capped), and bought the non air tube versions.

SCOTI · 10-03-2019, 02:29 PM

I had my chip/tune done w/the air pump option deleted since there wasn't one. But mine was/is a 1TON dually & didn't have CATs either.

71gmcC15 · 10-14-2019, 06:56 PM

I. On my 94 I deleted the egr and 02 sensor with out tuching the computer and it never made a difference. I have long tube headers and no cats . Same amount of power. Runs the exact same. And never had a problem. I also got rid of the e vap canister. You can tell where I live there is no inspection

10-02-2019, 01:32 PM	#1
mike88a Registered User Join Date: Jan 2013 Location: Pampa, TX Posts: 94	89 tbi egr/headers? I have an 89 tbi going in to my 87. I want to add headers in the most cost effective way possible. What do I do about the egr?

10-02-2019, 01:34 PM	#2
mike88a Registered User Join Date: Jan 2013 Location: Pampa, TX Posts: 94	89 tbi egr/headers? Dropping an 89 tbi motor into my 87 and want to add headers int eh most cost effective way I can. What do I do about the egr?

10-02-2019, 04:38 PM	#7
mike88a Registered User Join Date: Jan 2013 Location: Pampa, TX Posts: 94	Re: 89 tbi egr/headers? Got it all sorted out. I was thinking about it all wrong.

10-02-2019, 05:04 PM	#8
sweetk30 Registered User Join Date: May 2012 Location: horseheads,ny rust belt Posts: 2,794	Re: 89 tbi egr/headers? if full length headers its best to swap to a heated o2 sensor . lots of threads on this for your reading . i my self dont care for headers . lots of extra heat and noise under the hood . __________________ 77-k30lb BIG truck build . 87-k30lb budget beater build . 85-k30lb the plow machine build . 85-c10sb summer fun toy . ----------------------------- HOLLEY SNIPER efi = worst case of p.i.t.a i ever had . EDELBROCK pro flo 4 = best deal going so far . love my setup works great.

10-03-2019, 07:38 AM	#12
Stormin08 Registered User Join Date: Sep 2018 Location: Moss Bluff, LA Posts: 381	Re: 89 tbi egr/headers? good deal, i just sold a set with air tubes ( capped), and bought the non air tube versions.

10-03-2019, 02:29 PM	#13
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 21,907	Re: 89 tbi egr/headers? I had my chip/tune done w/the air pump option deleted since there wasn't one. But mine was/is a 1TON dually & didn't have CATs either. __________________ 67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... *Cubic inches is like Indiana Jones with a cheap pistol.*

10-14-2019, 06:56 PM	#14
71gmcC15 Registered User Join Date: Feb 2018 Location: Doland SD Posts: 836	Re: 89 tbi egr/headers? I. On my 94 I deleted the egr and 02 sensor with out tuching the computer and it never made a difference. I have long tube headers and no cats . Same amount of power. Runs the exact same. And never had a problem. I also got rid of the e vap canister. You can tell where I live there is no inspection __________________ ( second times the charm) 71 gmc c15 307 sbc 373 rear gears positrac sm 465 trans. ( not listed on spid but is original ) 94 chevy k1500 350 tbi 373 rear gears 4l60e one wheel peel. Gutless 07 gmc sierra classic rcsb 4.3 lt 5 speed w/t 04 chevy Silverado 1500 ext cab 5.3 4l60e. 81 chevy Scottsdale k10 muncie sm465 Np208 10 bolt 8.2 ( Old Green)

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