what kind of emmissions stuff can i take off my 89 350 TPI and how do i do it and what effects will I notice?

 

easiest would be smog pump and air stuff, my stuff i mean that big black box on the passengers side near the throttle body.

all air hoses and tubes connected to that box, and u will need to plug the cat and manifolds.

u can find info on all this from searching some.

umm i am keeping egr and vapor cainster as as right now.

i took out my a/c and just put in a heater box saves space.


removing the smog/air system will add alot of space and make the engine bay look better.


effects: save weight i guess, save space, no serious bad things will happen when removing this stuff. i have been running fine for months now.

i have non air headers, no cats, no smog pump and the car runs pretty good.

 

already did all that any thing else? I am ripping out my motor soon and replacing the block so that will make any deleting easier.

 

You'll need to have a PROM burned if you pull the EGR, otherwise you'll get a trouble code.

 

Could someone send pics of their motor without the smog stuff?

 

Here you go click on the click below.

https://home.comcast.net/~brians133/INTERIOR_1.htm

 

 

so is that all there is to remove is the air sytem and the egr?

 

You can't remove the EGR without a new PROM. You will get a trouble code without it.

 

I know you already said that I was just wondering what else i dont need to put on my new motor.

 

The crossover tube on the back of the heads. Get some stainless steel sheet metal and cover over the exhaust gas crossover passeges under the intake in the heads. Worth about 5-10 HP.

 

any body got a pic of what that looks like?

 

i would like to see pics of this aswell, also what kind of REAL HP can be seen by removing the egr? basically i mean is it worth it?

 

Isnt the crossover tube a ford thing

 

I know I'll probably get shot for heresy for mentioning it on this board. Getting a new prom burned can be quite expensive whereas yanking out the check engine bulb doesn't cost a dime! I kept getting the dreaded egr code intermittently after trying several things to fix it. The car runs fine even though it is throwing a code 32, so I just yanked the damn bulb out for now because I got sick of it glaring bright orange in my face at night! As long as I scan my ecm periodically to check for any other trouble codes, I figured what the heck!

 

Yeah, but it's not like our cars don't need a good prom anyway. Why go to all the work of making your car faster, and not have the computer tuned properly?

I'd say it's a quick fix, but you're gonna need a prom at some point.

 

Don't spend too much time searching for the crossover tube.

 

Am I right isnt the crossover tibe a ford thing

 

I pulled one off my TBI truck. It isn't the same as the Ford one that goes into the head. But there is a tube that crosses the engine at the back and bolts to the heads. It's usually too much of a PITA to remove in the vehicle.

 

My 92 didn't have a crossover tube. LT1s have them though.

 

Are you talking about covering the crossover passage in between the heads and intake? Are you saying cut a piece of sheetmetal to fit inside the cutout in the intake gasket? If so, couldn't i just mig weld the passage in the intake closed? I Don't have a crossover tube in the back of the heads, I know the sbf have one?
As far as a new prom for the egr, I think i could deal with an engine light. Black tape is only $.99

 

The tube on the back of a L-98 eng pipes air from the air pump to the drivers' side exh manifold. It has nothing to do with EGR.

A properly working EGR system will not degrade your mid-to-full throttle perf since it's closed under those conditions anyway.

Removing/deactivating the EGR valve can cause detonation at light throttle settings due to higher combustion chamber temps. The detonation can be prevented by using a higher grade of fuel and by decreasing the spark adv., but decreasing the spark adv at light throttle cruise will decrease your gas mileage. Either option will cost you money.

I'd keep the EGR and ditch the air pump.

Most of the emission stuff that really hurts perf is made into the eng (I.E. cam, heads, etc) and not easily removed.

 

So using 91 instead of 87 will cure this? Kind of late, I already removed it and I'm having a new chip made to cover it and all the other mods I'm doing as well. The chip is mainly for using 95 LT1 injectors, but might as well include the egr. Thanks for the insight, Tim

 

Yes, the crossover tube is part of the AIR system and has nothing to do with the EGR. It also doesn't go into the heads like it does on a small Ford. It's just an ugly piece of dead weight that you can remove.

To block the heat crossover passgae cut squares of stainless steel sheet (regular steel will burn through) that are slightly larger than the passage in the head. Use a bit of silicone to secure them and then lay the head gaskets right over top of them. Welding the intake isn't necessary, and I wouldn't recomend it for a variety of reasons.