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P/S gear box...66 F-100

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Old 10-06-2011, 05:26 PM
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P/S gear box...66 F-100

Heres an update....Got my rear axle problems fixed, now to change the complete front end to disc brakes....I got front end from a 77 f-100,, all fine. I want to get another power steering gearbox,, but other than Redhead,, very few choices. I do NOT have the box off yet, I will next week. I hope Numbers Dummy can see this and tell me the casting # of C6AR-3580-A2... It is NOT the original box on this 66. When I find out what application this box is,, I can check parts houses for a replacement. I have been told -stay away from Bendix boxes,, use only a Ford box---you all agree with that ?? The truck as is drifts around due to either a worn gearbox,, worn tie rod ends,, other joints, or all the above. So I am looking forward to having jam up steering ...Thanks,, Dan
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Old 10-06-2011, 08:20 PM
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Or it was never aligned. If its toed out, it will be all over the road
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Old 10-07-2011, 06:38 AM
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Dan, The donor will have the Ford Saginaw gear in it, the good one. I certainly would put a seal kit in it while it was out, but there are several other issues that can contribute to wondering, like a worn rag joint, tires, etc.




John
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Old 10-07-2011, 07:13 AM
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Quote:
Originally Posted by n4gnr View Post
I got a front end from a '77 F100, all fine. I want to get another power steering gearbox, but other than Redhead, very few choices.

I do NOT have the box off yet, I will next week. I hope NumberDummy can see this and tell me the casting # of C6AR-3580-A2.

It is NOT the original box on this 66.
No kidding! Thank your lucky stars it's not the original gearbox!
C6AR-3580-A2 is not a casting number, it's an ID engineering number.

It's not the ID number for the gearbox, because you found this number on the sector shaft cover. This is the only part of the gearbox this number represents.

But, it's all that's required to ID the puppy...

Marked: C6AR-3580-A2 = Ford part number: C5AZ-3580-D .. Ford/Saginaw integral P/S Sector Shaft Cover.

Original F100/350 applications for this specific part number: 1969 F100/250 2WD & F350 from serial number D96,001 / 1970 F100/250 2WD & F350.

In 1971, Ford replaced C5AZ-3580-D with D1AZ-3580-A (marked: D1AR-3580-AA).

So, unless someone installed this cover on a 1971 or later Ford/Saginaw P/S gearbox, it has to be from a 1969 F100/250 2WD & F350 from serial number D96,001 or a 1970 F100/250 2WD & F350.

This C5AZ-3580-D cover was also used on 1965/70: Galaxie/LTD, full sized Mercury's & Thunderchickens. The Passenger Car Ford/Saginaw gearbox will not work in a truck, as the housing is different.

btw: 1966/68 F100/250 2WD / 1969 F100/250 2WD before serial number D96,001 used Bendix P/S.

The bottom line is: You can use a Ford/Saginaw box thru 1979 F100/150 2WD's.
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Old 10-07-2011, 11:46 AM
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Thank You ND...I appreciate your answer.....And Jowilker,, There are some wear in joints...but I am replacing EVERYTHING and having a new gearbox, so I will know everything is right...Thank You all...Dan
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Old 07-03-2017, 03:07 PM
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Quote:
Originally Posted by NumberDummy View Post
C6AR-3580-A2 is not a casting number, it's an ID engineering number.

It's not the ID number for the gearbox, because you found this number on the sector shaft cover. This is the only part of the gearbox this number represents.

But, it's all that's required to ID the puppy...

Marked: C6AR-3580-A2 = Ford part number: C5AZ-3580-D .. Ford/Saginaw integral P/S Sector Shaft Cover.

Original F100/350 applications for this specific part number: 1969 F100/250 2WD & F350 from serial number D96,001 / 1970 F100/250 2WD & F350.

In 1971, Ford replaced C5AZ-3580-D with D1AZ-3580-A (marked: D1AR-3580-AA).

So, unless someone installed this cover on a 1971 or later Ford/Saginaw P/S gearbox, it has to be from a 1969 F100/250 2WD & F350 from serial number D96,001 or a 1970 F100/250 2WD & F350.

This C5AZ-3580-D cover was also used on 1965/70: Galaxie/LTD, full sized Mercury's & Thunderchickens. The Passenger Car Ford/Saginaw gearbox will not work in a truck, as the housing is different.

btw: 1966/68 F100/250 2WD / 1969 F100/250 2WD before serial number D96,001 used Bendix P/S.

The bottom line is: You can use a Ford/Saginaw box thru 1979 F100/150 2WD's.


ND,

By chance would you have a part number the actual gear box?

Thanks as usual for the help,

Lax
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Old 07-03-2017, 07:13 PM
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Quote:
Originally Posted by n4gnr View Post
Sector shaft cover casting # C6AR-3580-A2
Geez Louise str8patina, you dug up a an almost 6 year old thread...I didn't notice, so I responded to it.

Ford/Saginaw P/S

Introduced in 1965 Galaxie/LTD/full sized Mercury/Lincoln/Thunderbird and 1969 F100/250 2WD & F350 from serial number D96,001.

The C6AR prefix is car related, but the same cover was also used on trucks.

There are several different part numbers for this gearbox, depending on what year F100/350 it was installed in.

btw: What FoMoCo vehicle has a straight 8?
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Old 07-04-2017, 12:29 AM
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So, I originally bought a 66 - 3 on the tree, but wanted to make it automatic. As original as I wanted to keep everything 3 on the tree in Miami is a pain in the butt. So I got a 67 automatic column from Thom over at flashback and a FOMOCO p/s gear box as well. Unfortunately the only number I can see on the box is the C6AR ... number. The reason I am trying to find a part number is so I can buy another gear box and have it refurbished with all new guts (also trying to figure out the ratio), this is because the current FOMOCO box I have in the truck is not tight at all. I have an extremely amount of give to the left and right just to keep the truck straight on the road. I want to have another gear box ready for install before I take the one I have in now out. I'm hoping by putting in a refurbished one with all new guys it will fix my ultra sensitive steering issue. I was thinking of using a company by the name of redhead steering (I think they only work on Chevy though).

Hence my dilemma and me stumbling upon this old thread.

I really need to upgrade my account and load some pics so everyone can see what I'm talking about.

Thanks for the reply and help as usual and if you have any other info please send it my way. If you can tell me where I can find a part number on the gear box I will look and snap a pic too.

Cheers,

Lax
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Old 07-04-2017, 12:33 AM
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And For the very little I know I don't think Ford ever came out with a straight 8 only a flathead 8 and the 8s on the FEs.

Str8 is just a play on words (straight) I guess and the patina portion relates the amount of rust/patina on my truck.
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