Bingo! Here is a pic of an 8BA flywheel's backside

 

OK, I'm convinced. It must be from a I6. There must be more than one type of flywheel for the 226 flathead. The car has one style and the truck another even though they both will fit either one. I assume then that the ring gear is no longer available since I can only find the V8 112 tooth.
If anyone has a V8 flywheel at their disposal, could you measure the inside diameter of the ring gear and the height of the teeth from the inside diameter to the top of the tooth? It would give me a good idea if the V8 ring gear might work. Thanks everyone for the help!!

 

8ba V8 flywheel measures 12 15/16" inside ring gear and tooth height is 5/8"

I couldn't find a 6 cyl one to compare.

To add to your confusion, one of your flywheels could be from an earlier V8.....59A style. They are different than the 8ba and look very similar to the ones in your pic.

A pic from the side(edge) of yours would tell, as the ring gear offset is different

 

Check out the specs on this site:

2GA-6384 - Hagen's Hiway Auto Parts, Inc.

Appears they have them, NOT cheap tho. I saw on one site that came up in a search that CERTAIN earlier V8's used the same ring gear and that Pioneer FRG112S is a match. Pioneer is a big aftermarket mfr., and sure enough:

Pioneer Inc. FRG112S - Flywheel Ring Gear | O'Reilly Auto Parts

I believe the pic below shows one of the earlier V8 flywheels that uses the same ring gear. Note the difference in the area around the crankshaft, these flywheels on't fit an 8BA without some work, so I don't think they'd work on a 7H either.

 

Well, here are the edge pictures of the 11" flywheel in question:

 

Thanks for the links. Yes, Hagen's is expensive. The Pioneer is not cheap either with MAC's having a V8 ring gear for $39.95. I did notice that the ID of the Hagen ring gear is 13.042 which is around my size. I have not attempted to measure the ID that accurately. Tinman, how accurate is your 12 15/16". Could it be closer to 13"?

 

Found the Pioneer FRG112S at Summit for $41.95 and supposedly it interchanges with ATP ZA-557 which I found for $26.85 at Amazon. Wow, such choices if these will actually fit. They claim it fits both the 226 (3.7L) and the 239 (3.9L) in the 1948 F1. Still looking to verify the sizes of these aftermarket choices.

UPDATE: The ATP ZA557 has an ID of 12.42". It would fit my "car" flywheel but not the 11" truck. This may mean that the FRG112S also may not work.

 

There is continuing confusion on the parts lists about 1948 flat V8's. The 8BA was introduced in 1948 in trucks ONLY, while the cars continued to use the 59-series one more year. Many parts lists show '48 V8's on the wrong side of the split, without regard to them being car or truck engines. I believe Pioneer's catalog to be correct for the 226, but wrong for the '48 Truck V8's, see below.

Here are excerpts from the Pioneer catalog (www.pioneerautoind.com ). Note that there is a FRG-112S for the 226, but in the dimension list it shows only an FRG-112SF. I don't think the "Applications" shown are meant to be an exhaustive list.

 

Okay I found a loose V8 ring gear, much easier to measure. ID is right at 13", maybe a hair more. OD is about 14 1/8". Tooth height is closer to 9/16". Sorry I do not have a super accurate way to measure...

Your edge pic of the flywheel makes me think it IS for a 6 cyl.

 

OK, I removed the ring gear from the 11" clutch flywheel and got a fairly accurate measurement of the ID at 13.050". If the V8 ring gear has an ID of 12.84" as I have read elsewhere, then it will be too small. The only replacement I see that would work for sure is the 2GA-6384-A which is listed with an ID of 13.042. All the Pioneer ring gears are either just slightly too small (FRG-112SF = 12.980") or slightly too large (FRG-112NF = 13.112). The FRG-112S is the correct size for my 9 1/2" flywheel as it has an ID of 12.42". So I guess I either buy the expensive ring gear from the one place that has it or I look at another clutch size and/or flywheel.

I want to thank everyone who chimed in for the assistance. It was very helpful!!

 

Did you check with Jmadsen or Brain about a good used flywheel? There may be others too. In fact, "Cody_1948" on here had a 48 with a 6, and is in MI. Not sure what he did with that engine.

There's also these:

http://www.ebay.com/itm/FLYWHEEL-FOR-FORD-FLATHEAD-6-CYLINDER-/151248607700?pt=Vintage_Car_Truck_Parts_Accessories&hash=item23371e99d4&vxp=mtr
http://www.ebay.com/itm/41-42-46-47-48-49-FORD-CAR-PICKUP-TRUCK-FLATHEAD-6-CYL-ENGINE-MOTOR-FLYWHEEL-/131047398803?pt=Vintage_Car_Truck_Parts_Accessories&hash=item1e83089d93&vxp=mtr

 

No, I did not check with anyone else on the forum but I did see the ebay listings you posted. The top flywheel is the 114 tooth like my 9 1/2" unit but is drilled for a 11" clutch. I asked for info on the ring gear condition a few days ago and got no response so I am leary of that one. The other one would cost me $105 with shipping and is drilled for a 10" clutch and I don't know how good the ring gear is on that one either. I figure at these prices I might as well spend the extra $40 and buy the new ring gear. At least that way I know what I'm getting. I'll have to check with those other two fellas and see what they have. Thanks again for the help!

 

Green Bible sez:

2GA-6384-A = 1941/48 226 Ford Passenger Cars & 1941/47 226 Commercials (1/2 tons) & Trucks.

Green Bible = 'Old timey' Ford enthusiasts term for 1928/48 Ford Passenger Car & 1928/47 Ford Truck Chassis Parts Catalog that has a green cover.

 

So, if I can find a '41/47 226 "G" series flywheel from a F1 with a good ring gear it should be the correct 112T flywheel and if I am lucky it may handle the 11" clutch.
I guess I am still looking though shipping is very expensive since the flywheels are so heavy at around 35 lbs. At least the ring gears alone only weight about 3 to 4 lbs.
Thanks!

 

Thanks Ross, ive got a complete 226 and a 254 sitting here but pretty sure i dont have any loose flywheels. I talked to my friend here (local flathead rebuilder) and he's got one or two available if you still end up needing one. Dont think he wants too much for it either, just glad to see them find a home i think.