Roger's Idiot thread for a 302/C4 into a '70

The factory did use port pictured but no way I'd use it for PCV. Original engine in my Comet had a lean misfire on #7 because of that hookup.

 

Good point, didn't think about it leaning out that cylinder.

 

Thanks. Looks like I can just block off the big ugly EGR part and keep the original plate. I saw they make plates for 87 and up. If it doesnt fit looks like I could just shape one out of something.

https://www.amazon.com/LZM-1004-011...?keywords=302+EGR+block&qid=1577631969&sr=8-1

EDIT: plus this gasket with no EGR hole

 

Agree with RMiller. The one on the left looks to be a broken temp sending unit, though Ford usually put those at the front of the engine. No reason you can't use the vacuum tree shown. I suggest you turn your PCV-only carb spacer upside down, however and look at it. It should have 2 small notches which connect the internal passages of the hollow spacer to manifold vacuum. On this pic they're roughly at 5:30 and 6:30 positions.

I too would do without the EGR valve. It's ugly and they do go bad.

 

It does. however the end of it is solid. See tow pics below

 

PCV should be fed from combination of vac from both banks of the engine. That's what the openings in spacer does.

Where is the EGR port in intake? Would it be blocked off if your solid spacer were installed upside down? If so, could you possibly drill the spacer and use it?

 

Made a block of plate in the schools robotics lab.

 

When I got the engine it had a thin gasket >spacer > thick gasket on the carburetor. I found the thick gasket, but I can not find the thin gasket. Is it just me or is Summit Racing website hard to find things on?
Thick gasket - https://www.summitracing.com/parts/fel-60716
Anyone know how to find the thin gasket?

EDIT: had to find it at autozone first then could find it at summit.. https://www.summitracing.com/parts/fel-60244

 

I find that the exhaust will burn right thru the gaskets on the block off plate.

 

Huh...that's mighty peculiar.

 

so what do you suggest? Something different? The thick gasket on the bottom?

 

You can purchase exhaust gaskets that come in sheets, so you can custom make to your size, should be able to get at any performance auto store, usually comes in a roll or sheet.
https://www.amazon.com/Mr-Gasket-77...et+Performance+Material&qid=1578115415&sr=8-1
David

 

I would suggest doing away that spacer and get an aftermarket intake that has no EGR on it.

 

I once saw a '77 F-150 with a burned out aluminum carb spacer. Those used EGR intake but blocked opening with a solid spacer.

The F-150 was introduced mostly to get around emissions/EGR requirement of F-100. Of course within two or three years the F-150 was subject to same requirement as F-100. I believe '81 was last year of F-100.

 

Ive looked and looked. I cant find a spacer with no EGR but with a vacuum port for PCV