on the back of the intake, theres the EGR port and another port.

i know that when most people do the intake mod, they just block off these ports.


i need to weld some material on anyway to cover my coolent ports on the dart heads....

if i cut straight down the back of the intake, and then a flat cut to make it even with the back (like where the distrib hole is) where does it lead?
what im asking is can i cut off where the EGR was mounted too?
are there huge holes to cover, or just smaller ones that can be TIG welded (or even JBwelded) shut?

 

Small 1/2 " hole.

 

has anyone here done this before? any pics?

 

it was done here

http://www.popularhotrodding.com/tech/0803phr_beast/

 

thoes pics were exactly what i was looking for!

thanks!

 

I just completed my swap. I had to add some clearance at the EGR area for the distributor. I actually cut into the EGR hole. I used the Loctite epoxy putty to fix that nasty vacuum leak. Also, I'm running stock heads, so I tapped the coolant lines into the rear of the intake instead of the front.

 

How did you like your performance after the swap compared to before?

 

Oh, man. What a difference! It really woke it up. I feel an all around difference. John Millican was a big help as far as support and info for this.

 

Sorry, it is MUCH bigger then a 1/2" hole. Here's a picture of Tom's intake (Aug 2003 PHR) before I sealed it up.

 

Man...thats awesome. Does it feel any different in the lower RPM range? They say that there is a loss of TQ down there. I am just wondering if sacrificing low end torque could really be considered a "Sacrifice".


I guess I'll just have to come over and take yours for a little drive to really feel it out.

 

whoa, that is big.



well, i have to get some pieces TIGed on for my coolent ports anyway..... so i'll just fit some pieces to go there, then have him weld it all..


i think im going to have him weld the bolt holes closed too.. i mean, im going to have the sealing surface resurfaced anyway because of the coolent port additions....

 

I was referring to the EGR hole, not modifying.

 

john, how do you go about sealing that? it looks like that space is under the actaul intake runners so it wouldnt matter if alot of epoxy got in that space, but are you really going to just epoxy it? if so what are you going to use, some kind of bondo net type support and just epoxy the hell out of it? thanks

 

Exactly.

 

You must have misunderstood MrDude's question then. It's a good thing John posted that picture, or I would have been cutting into my LT1 intake only to find a much larger hole than just 1/2 an inch. WHEW!

John, do you have a close up of the open ports? Are all holes open to the intake ducting? (smaller ones on the side, large ones in the center too?)

 

if I correctly inerstand your question, if ya look kind of close you can see that the actualy runners are still intacts, the egr doesnt dump right into the intake from there or else you would only be EGRing lol the number 7 cylinder. It looks like it goes under the runners and then comes up in the front, which to me sounds like a really ****ty design if you think about it, it prolly gets the undersid of the runners pretty damn hot

 

looking at the pics, heres how i THINK, it works (correct me if im wrong.




the exhaust gas comes in from the smaller port on the right of johns pic. it crosses under/behind the other port and comes up thru the hole seen on the far left... goes into the EGR valve.
when the valve opens, the gas goes into the lil sloped part at the top left of the center opening.....

there it travels into the plenum.





if thats correct, i really only have to block the center hole....... athough for looks, i'll do it all and make it look nice.