Steering Box 1967 Shelby Question

[acman63]

If you give me your Tag info I can tell you if its a long shaft,  large or small sector.  The Ford parts book will tell what parts go to each box.  Ill do a little looking when I get a chance

[1967 eight barrel]

SMB-E Short shaft, small sector.

[Kent]

Fastback S Code GT with power steering 1967 built in June 20 and I think it should be a smb-k not a smb-e and it should be C6ZR

https://www.ebay.de/itm/Ford-Mustang-Lenkgetriebe-1966-Lenkung-7F22-C6ZR-0550A-SMBK-7H16B/272129865711?hash=item3f5c3437ef:g:pCUAAOSwll1Wu0Sn:rk:1:pf:0

this smb-k box is from june 22 and completed in august and it still got the C6ZR

[1967 eight barrel]

All FE powered cars are short shaft gear boxes.  It shows the SMB- E was used until 5-1-67. SMB-K  replaced the E box.

[Kent]

may 1 thats what I said before because my 67 shelby gt500 has a smb-k from factory 100% but I cant see if its a C6ZR or C7ZR because it is in the car. I need the info for my s code I´m building

[J_Speegle]

.............I need the info for my s code I´m building

Then  it might help if we knew when and where the S code Mustang was built. In that way we could just focus on that period and plant

[Kent]

june 20 2017

[J_Speegle]

june 20 2017

Guess you meant June 20 1967 based on your earlier post. Yes the C6ZA 3550A casting number for the main case/body of the steering box assembly were still being used at San Jose

[Kent]

Thats what I thought so I have it together right. Thanks to everybody, great forum

[1967 eight barrel]

No, the short box isn't late production item. It came on ALL big block cars. The difference is the sector shaft.
Kent, you don't have to pull the box. Look at the casting number on the pitman arm.  If it's the 1" sector you'll have C4ZA-9530-A, if you have the 1 1/8" sector you'll have C7ZA-3590-C. That is the actual casting numbers on the pitman arms.

                                                                                       -Keith

[Kent]

I already know smb-e in early GT500 then smb-k since may GT500, the question was more for a s code but as they all started as big block cars its pretty much the same. And I knew it should be smb-k my question was more if its a C7ZR-A or C6ZR-A Core and I think we solved it also, I have seen some C7ZR-A boxes with date codes starting in the end of summer 1967 but may and june boxes were C6ZR-A.

[1967 eight barrel]

The change over starts on 01 May.  The difference in the casting number is Sector size.   You could even have a C4DR-A box. Do you have a fill plug on the 9" housing at the rear?
                                                       -Keith

[J_Speegle]

................ if you have the 1 1/8" sector you'll have C7ZA-3590-C. That is the actual casting numbers on the pitman arms.

Since the focus of his questions are not Shelby it could also have a C7ZA-3590-B though few 390 67'a were likely ordered/built

..........You could even have a C4DR-A box. ......

?  If original how could that be given his build date and application?

What is the latest casting date you have for one of those?

[1967 eight barrel]

I spoke to Randy on these and got the chart. I have a C4DR-A housing and a C4ZA-A pitman. Correct for '67 with a 1" sector.  Gear boxes aren't specific to Shelby, but all mustang production. The break for all cars between the 1" sector and the 1 1/8 shows to be about May, as does the rear  9" housing change over with the fill plug.

[J_Speegle]

I spoke to Randy on these and got the chart. I have a C4DR-A housing and a C4ZA-A pitman. Correct for '67 with a 1" sector.  Gear boxes aren't specific to Shelby, but all mustang production. The break for all cars between the 1" sector and the 1 1/8 shows to be about May,......

Not sure what the chart is that you referred to and what it tracks. MPC's reference the May 1 date but we know that production didn't always follow those and if that was the production of the castings, the completed boxes or the car's themselves. Don't want to go into the rearend housing subject since that is apples and oranges. We've touched on that before either before or after the forum crash here. 

Car in question is over a month and a half after the May date if its a car production date.