deleting the EGR on 1987 R10 ?

[nuknuk]

So I got my hands on a 1987 R10 Silverado with the TBI 350.  It has been neglected and the a/c took out of it under the hood.  Looks like some kids may have had it, and after both fuel pumps quit working, the truck has just sat for years.  So now I have it and am going through it, bringing it back to life.  I am at the point of putting the engine back together after rebuild and want to delete the EGR.  Question is do all I need is a block off plate and plug the vaccum? 

[Chuck Step-a-side]

You got it right. 

[80Chevy4x4]

Yes do what I did on another motor...make your own cover plate out of 5/16 inch plate.....don't use 1/4 because it will warp....when I did mine it is still going strong.

[Tazman]

May I ask what does this change? 

[hatzie]

The interesting thing is EGR has no negative performance effect on the engine if it's working as it's supposed to.  I usually keep it.  It's not supposed to be active at WOT and under medium to heavy load.

The evap canister really has no negative effect on performance and the plus is the garage/barn doesn't smell like fuel. 

PCV actually has several positive effects and no hit on performance.

Air injection into the exhaust robs some HP to run the pump and the restrictive factory catalyst is a hit too.  You can get better flowing catalysts and use an aspirated air reed valve to introduce some secondary air using the negative exhaust pressure pulses into the catalyst for O2 to light it off.

[VileZambonie]

Disconnecting and plugging the EGR vacuum hose accomplishes the same thing but I agree with Hatzie. Unless this is a high performance build you gain nothing by eliminating it.