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I'm sure there's a website out there somewhere that shows the numbers, but this is what I've personally seen.


single rib case:
C4AW-A small bearing
C4AW-C large bearing
C7AW-E small bearing
C7AW-G large bearing

Nodular Case (w/ or w/o "N" on the front)
C4AW-B large bearing
D0OW-B small bearing

There was also a "C2AW-B" that some claim to be a Nodular, but I don't think that debate has ever been settled.

I wonder how he can explain why a "C7AF" distributor has a "5B24" date code.

[NOT MINE.]

NOT MINE. I have no connection with this. I just saw it on Corral.Net and thought someone here might be interested since it's a pretty early date. Hard to see but looks like "3j11"?
https://www.corral.net/threads/c40e-9425-b-cast-iron-4bbl-intake.2521562/

I am interested.  You  can send the pictures to Toofasttbird@verizon.net.  Thanks.

I'll try to dig it out tomorrow. I'll E-mail pics to you and post here.

I have a manual pedal setup from a 69. I don't remember if it's for power brakes. I do remember it's a bit rough and would need a thorough refurbishing. I want $150 plus shipping for it. If interested, let me know and I'll dig it out for some pics.

Hey Fran,
You bought the crank pulley and some other brackets from me. I thought you already had a good water pump pulley? If you still need it, let me know. I have a couple with "C6" partial ink stamps and a couple others with "C8" partial ink stamps. If you have the dimensions, I can check what I have to make sure it's correct.

I might have one, but I won't be able to look for it until the rain stops. Might be a couple days. I saw a couple on Ebay. $100 seemed to be the cheapest. West Coast Classic Cougar also has it.

I know I have the crank pulley. I thnk I have the water pump pulley but will have to check the numbers on what I have.

When do you expect to have GT390 transfer tubes back in stock?

Which brackets are you looking for? I don't have the pump, but I have the aluminum mounting bracket and the steel adjusting bracket.

Payments received and both brackets shipped out today. With a little luck, both should be delivered by Saturday. Thanks guys.

I assume you mean 68 Cougar with R & W code. I can see the early W code cars getting them, but R production started in February 68. Maybe some Mustang 135 cars got SPEC cases? They were built late December 67. About a week or so after the 7L20 and 7L21 no N nodular cases started getting made. Just for reference, my May 11, 1968 Torino GT R code fastback has its original 7M21 case with 31 spline 3.91 trac lock.

I don't know when the non-SPEC Nodular started casting, but I have one dated "7F2."
Does anyone have a pic of a one of these Nodular with no fill plug? Otherwise, I have a hard time believing they exist. The timeframe for their use would be so short and the applications so limited that I don't think Ford would've bothered.

Here are the two that I have. I don't know if you can zoom in on the pics, but here's the best I can describe them. Both are very solid. Both have pros and cons.
The one on top has a little rust and the numbers are a little fuzzy. I think a good blasting and paint would cover it up pretty well. The numbers might just be a poor stamping from the factory. The adjustment slot appears clean and free of gouge marks.
The one on bottom is very rust-free and the numbers are crisp and clear. The only downside to this one is it has some gouge markss in the adjustment slot. Still solid but maybe could be filed down a bit to clean that up.
Let me know which one you want. I have a buyer for the one you don't take.

It appears to be separate from the GT option
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Believe it was "automatic" with a 4 speed. Other examples with it not listed on the Marti report had tachs in my sampling. Could not find an example (s code 4 speed) without one.
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My 67 S code is a factory four-speed non-GT car. It came equipped with a 6K tach. Years ago I had a 68 S code factory four-speed non-GT car. That one was factory equipped with a 8K tach.

Are there any known examples of SPEC cases or any other Nodular cases without a fill plug? I've never seen one.