I have taken the 332 LYB heads and converted them from the large stemmed sodium exhaust valves to the standard size 11/32” valves by simply installing new guides in the heads.  The same could be done with the sodium filled exhausts in Y heads if deemed necessary but Y heads with the larger stemmed sodium valves typically need so much in the way of performance mods that it’s much easier to start off with a pair of ‘better’ castings to begin with.  There are so many Y heads available (and better ones at that) that converting the sodium exhaust valve equipped Y heads over to a regular sized valve stem hasn’t been a cost effective solution for me.

Lorena, Texas (South of Waco)

So I made the journey to Moab. It was a fun little saturday morning drive. Spent a couple hours pulling the motor out of a sweet little '57 fleetside truck that had been partially parted out and was severly deconstructed. I got home, pulled the heads and they looked GREAT! Obviously, they need to be cleaned and magnafluxed, but I'm stoked. Did I mention that already



The heads are ECZ-G 113 (With the S for Service Replacement I think.) I was under the impression that the G, C, and 113's were all different heads. Am I wrong in that assumption? Beacuase my heads are clearly marked ECZ-G 113 S.



Regardless, now begins the fun!



The only other dissapointment (If it's a dissappointment at all) is that I was hoping the block would be a 292, but it's a 272. Which I've already got.... But I can't friggin WAIT to start monkeying around with them!!!

Heber City, UT (15 mins outside of Park City- basically it's in the mountains)

55 Effie

I'm with John on this one, if you're gonna spend x many of dollars on a set of heads then it makes sense to go with the all around good ones. It still cost the same wheather you're porting ECZ-Cs or ECZ-Gs and in the end better results are obtained from the Gs etc.

-Gary Burnette-

Sodium filled on exhausts only.  The intakes were regular type 1.78 in valves.  There also was a special one piece spring collar, with a floating button between the stem end and rocker.  I think it was only on the exhausts.  Still have one of the heads and the valves. 

Mike, located in the Siskiyou mountains, Southern, OR 292 powered 1946 Ford 1/2 ton, '62 Mercury Meteor, '55 Country Squire (parting out), '64 Falcon, '54 Ford 600 tractor.

I've heard of the sodium filled valves on the (?) heavy duty / (?) medium duty truck 292 engines, but have never seen any. I'm astounded if the valve stems were in fact 7/16 inch diameter. I can't imagine that!



I don't have the Ford Truck Parts Books to look up any of the info. that was available about these. Were the stems sodium filled on both the intake and the exhaust valves?



Thanks.

NoShortcuts


NoShortcuts
a.k.a. Charlie Brown
near Syracuse, New York

C1TEs have the 1.65 intakes with usual valve stem and 76 or 77 cc combustion chambers.  ECR-A heads and maybe others have the sodium filled valves. 

I had a set of ECR-As (1956-?) and was going to redo them.  It would be easy to replace the sodium valves with regular valves through use of new guides.  The sodium material is contained in the valve stem, so they are a very thick 7/16 in.  The combustion chamber cc'd at 73 and the head looked very similar to an ECZ-C.  It ended up that both heads were cracked. 

Mike, located in the Siskiyou mountains, Southern, OR 292 powered 1946 Ford 1/2 ton, '62 Mercury Meteor, '55 Country Squire (parting out), '64 Falcon, '54 Ford 600 tractor.

Grovedawg,

Don't the C1TE heads you wanted to modify have the large sodium filled exhaust valves?

Has anybody modified these for a hipo motor?

55 Vicky & customline

58 Rack Dump, 55 F350 yard truck, 57 F100

59 & 61 P 400's, 58 F100 custom cab, 69 F100, 79 F150, 82 F600 ramp truck, 90 mustang conv 7 up, 94 Mustang, Should I continue?

Perfecto! Thanks duders!

Heber City, UT (15 mins outside of Park City- basically it's in the mountains)

55 Effie

If talking about heads, it’s necessary to clarify exactly which heads are being talked about.  The ‘C’ heads in most conversations are the ECZ-C heads in particular and not the COTE, COAE, C1AE, or C1TE heads.  The ECZ-C heads are in a completely different class from the COTE, COAE, C1AE, or C1TE heads and each group subsequently has different attributes in which to attempt to get performance out of them.  As John brings up, using the ECZ-G, 113, or 471 heads are the more desirable head castings in which to start with for any kind of serious performance.

Lorena, Texas (South of Waco)

This is very interesting stuff. Thanks John M. & Ted..

Grove Dawg-, even it you install oversize intakes, the real compression ratio of C1TE heads is likely well under 8 to 1 with composite gaskets. I'd buy the "G" heads, but check them for cracks between the center exhaust valves first.

Paul