View Full Version : EGR delete, plug size? for the hose port, 97 vortec 350
02-23-2012, 08:42 PM
I am contemplating deleting my egr before I get a tune, I am planning on long tube headers, If I do the egr delete now, what is the size plug for the intake and the exhaust manifold? It looks like a standard 3/4"npt plug would fit, but I don't want to take it apart then have to put it together to get other parts, thanks. And for the EGR valve, If I leave the valve on the intake, do I make a gasket to block off the bottom of it? Leave it plugged into the harness, or do I unplug it? thanks
02-28-2012, 12:33 PM
i did this on my 97 tahoe when i installed longtube headers. the egr hose can be taken out and thrown away, its a pain in the ass to get out but i got it out.
for the intake, you need a 10AN fuel line plug, summitracing has em for like 2.95, or im sure u could prob find it locally. they come in different colors if u want it to look fancy, and dont put any teflon or anything on it because its flared and doesnt need it
for the valve, theres a block off plate that you can get from ebay, i believe the seller is custom billet works or something like that, it blocks off the hole after you remove the egr valve, and i just ziptied the plug to other wires and left it
EDIT: heres the block off plate: http://www.ebay.com/itm/CHEVY-S-10-S10-SATURN-BILLET-CPI-EGR-BLOCK-OFF-VORTEC-/250943161769?pt=Motors_Car_Truck_Parts_Accessories&vxp=mtr&hash=item3a6d60c5a9
and heres the GM line plug:http://www.summitracing.com/parts/NAL-12556596/
still looking for the cheaper version, summit doesnt seem to have it anymore
here it is!: http://www.summitracing.com/parts/SUM-220030B/
thats what i used^^^^worked great
more info can be found on this thread: http://www.fullsizechevy.com/forum/general-discussion/performance/435424-where-can-i-find-egr-block-off-plate-vortec.html
02-28-2012, 06:19 PM
Cool thanks man, that helps! Does anyone know what thread size the exhaust plug needs to be. I plan to do this first, and when I get money saved get headers. thanks
02-28-2012, 06:25 PM
no problem, well to save you some money and time, u will probably need a cap for the manifolds, not sure on the size but if i were you just get the block off plate and remove the valve and get a tune, the egr cant work without a valve, then when u get the headers, put the plug in the intake and put the egr-less headers on and there goes the tube
03-01-2012, 08:09 AM
Ok, I am picking up the intake fitting today, going to make a block off, just need to figure out the exhaust plug.
03-01-2012, 02:05 PM
do what you want but it really seems pointless to remove the hose now unless ur trying to shed the 1/2lb that it weighs. i would just block off the valve, then when u get headers, put the plug in the intake and done....right now you will benefit 0% from removing the EGR line when the valve is already blocked off
03-02-2012, 08:06 AM
Oh, Ok, I guess I was thinking I needed to remove the hose if I was blocking the valve, I will just block it for now then, thanks.
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