Is there really that much difference between the 1957 'G' code heads, and the 1958-1959 big valve 113 heads? I know the 113's were sold as a later replacement for the 'G' codes, and the cc's differ slightly. Bigger question, if you had the choice between the two, which would you use on a 292, and why?
I know the difference because I recently bought one of each. I had heard that the 113's were a factory replacement, so I figured they were the same. Not true. The ECZ-G's have a 69cc dish, and the 113's have a 72cc dish. The difference is obvious when you lay a straight edge along the flatter edge of the chamber. The 113's have a straight across chamber, where the ECZ-G's are slightly angled. Well, I thought maybe I can just hog out a little material from the ECZ-G's to match the 113's. I looked on ford-y-block.com and saw a photo of a cutaway, and I don't think there's enough material to do it without getting into the water jacket. Not real thick casting in that area. So, now I have to find another of one of them. Do you have a single you want to trade? I don't care which one. Both of mine are OK shape (were actually on an engine together, though I'm not so sure it ran up to potential with the different size chambers), but would need a standard rebuild.
The "113" heads have the same valve and port sizes as the "g" heads, but have a slightly larger combustion chamber. The factory rated compression at 9.7 for the "G", and 9.4 for the "113". With today's gas, I'd settle for 9.4, since all else being equal, you can usually buy the later heads for less than the '57 only "G" castings. Besides, I've talked to Y block men who actually preferred the "113", because they believed that the larger chamber unshrouded the intake valve and allowed better airflow.
Sorry, I don't have either.......right now. Just a general question at this time. Thank you for the info!
Unless you plan to be counting every millisecond at the drags the G heads will buy you very little. They work best with a fairly big cam and an intake such as the Blue Thunder. G heads also come in posted and unposted versions; posting was a later production fix for thin casting failures. G heads cant take much of a mill either due to the thin walls. For a street build I prefer ECZ-C heads. A clean up mill and a zero decked block will give you all the cr you will ever need and the C's have an excellent quench even stock. If you will be running a ECZ 9425-B intake and C heads then do a simple port match for best flow altho they will work quite well as is. 56-57 heads had the high ratio 1.54 rockers, marked ECG. However anything could be on any head these days due to the poor oil used back then and subsequent shaft and rocker damage. If you do go with G's be sure you check them out very carefully; especially for cracks and milled once too often. I equate the G obsession as similar to the 60's double hump SBC heads with 2.02 valves. It is another head that is actually worse on the street than 1.94 heads. You can usually buy several sets of C heads at the same price of one G.
I currently have C1TE heads on my 292. I found a guy that has a set of 113's, and a set of 'G' code. My eventual plan is to get off my **** and install my tri-power, with the 94's. Prob just keep a stock cam, unless you guru's think otherwise. From the replies, I take it the 113's are the better choice all around?
Anything else is better than what you've got. The y block was just a bread and ****er engine by '61, and the heads went back to the same valve sizes that the original '54 239 used.
Those are truck heads. Nice for a F600 dump truck! Small valves, low compression makes for low end truck grunt. Run what you already got with those 113's. My earlier comments about rocker shafts hold with any Y Block as well as a cleanup mill.
For what it's worth, I have a 57 312 that I had rebuilt for my 54 coupe. I took a pair of ECZ-G and a pair of 113s that came from a truck 292 to the machine shop. Jack Lundin, a former stock car driver and owner of the shop flow tested both pair of heads and picked the 113s, which he rebuilt. There are pictures of the car and heads and engine at my car web site. Just click on the 54 Ford on the left menu and you are there. I have a frozen 312 with ECZ-G heads and the 292 truck engine which is decent and without heads for sale. http://www.bslusa.com/cars/index.htm
Wizz yes the G heads will work on any 292, they were std equip in 57 Fidget, Ford never produced a 292 with two fours, although I am sure some got the over the counter kit installed. If your car is indeed a factory two four car, it would have left the factory with a 312 and would be a E code car as noted in the VIN. The G heads with a production date after late June of 57 should be posted and all 113 heads are posted.
Well my engine is not original to the car i have a 56 fairlane. The person I bought the car from told me it had the original engine but after inspection I found the c2ae number on block and c1te on the heads with ecg9245 o manifold. I picked up some g heads,i bought a 9245b manifold, and I plan to put them together soon but I'm still not sure what type of carb I should get I was told nothing over 650 cfm or I would loos performance and I'm also unsure what type of distributor*I have
Stroll through y-blocksforever.com,one of the gurus did extensive tests on all the different heads for a y block..maybe Tim will chime in,too
i have a 292 out of a 62 ford dump truck it,s 60 over with a mild cam and with a eddy 4 barrel tim had help with the choice of cam i running a set of g code heads. it runs great i have a tri -power set up but i will wait to put on
Its just an air pump, it will run fine in a street motor with 2 different heads, it dont know what heads are on it
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