EGR plate delete on a 1979 7.5l 460
 

[B[Hello all, the old holley 4 barrel 1850 carb needed a rebuild so while pulling it off I noticed that the EGR was a plate sandwiched between the carb base and the intake manifold base.
My question is can I remove the EGR and the plate put carb spacer in its place? Currently the EGR isnt hooked to anything.
What do you think or has anyone had had any experience doing this?
/B]

You can get an adaptor that will replace the EGR plate. I put the transdapt 2199 on mine. It is a complete kit so you wouldn’t need anything else. They are getting expensive though. They are currently running about $65.00

Thanks Gary. I ended up just sticking it back on unhooked up of course.

That’s an interesting concept. I have over the years used JB weld to patch up all kinds of things all the way from cracked blocks to cracked motorcycle cases. I have even raced motorcycles across the desert that was patched back together with JB Weld. But you still have one problem; a square bore carburetors secondaries will not open on that manifold unless you do some grinding on those secondary holes. I am not sure how the JB Weld will hold up with all that expanding and contracting that the hot exhaust gases is going to make the manifold go through. That exhaust really heats up that EGR hole. Another advantage of the adaptor plate is keeping the carburetor cooler. I added the Edelbrock wood fiber spacer on top of the adaptor plate and it completely stopped the carburetor percolating the gas when the engine is run under hot conditions.

Doesn't your 79 have a square bore intake and the Ford/holley square bore 4-barrel ?

My mistake, I didn’t pay attention to his post. The 79 was a square bore. 78 back had the mickey mouse large secondaries. I hope I didn’t throw you off.

If you don't have the plate then look here ..

http://i1072.photobucket.com/albums/...psfhptwcya.jpg

Thanks redroad, thats how i did it.

Get a freeze plug for the size of the hole under the spacer plate. Plug it off there so you don't have to deal with the hot exhaust gas.

That’s interesting. I never thought about a freeze plug. Would have saved me money on an adaptor plate. Ideally would be an aluminum performer manifold. That way you wouldn’t have the intake manifold getting so hot and you would lighten the vehicle by about 50 pounds. Can’t do that in California because of the smog checks. You can’t modify anything or its an automatic fail. I took mine in one time for grins and ran it through the smog check with the Edelbrock on it and the EGR removed and it actually ran cleaner than with the Factory equipment on it. I mean considerably cleaner. The Nox was 999ppm with the factory equipment and 110ppm with the Edelbrock and all the other numbers were lower as well. It passed with the factory equipment but of course failed with the Edelbrock. We need CARB ran by automotive experts instead of politicians that don’t know a differential from a distributor.

Hello Gary, Sorry about CARB sounds like a United nations agenda 21 nightmare!! Especially when your ppm nox is scrutinized because of its shape or manufacturer of the part.
I prefer much less government in my day. Cheers to you though.

Update
 

Hey All, just a update on my work on ol'blue85. I solved my EGR I bought Stealth 8012 manifold.
https://cimg3.ibsrv.net/gimg/www.for...6d8f81e199.jpg


Bye bye EGR