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View Full Version : Dana 44 needs to be narrowed on 56 GH



mike super
05-12-2017, 10:44 AM
Has anyone narrowed a 44 rear end. We need to narrow by cutting one inch off the spline and replace. Any suggestions or experiences that can be shared is appreciated.

studejohn
05-12-2017, 10:50 AM
Have you look at using a rear end out of a 50 51 52 there are ready narrowed 2 inches and are Dana 44 case Good luck John Kroulik

sweetolbob
05-12-2017, 11:24 AM
If all else fails, talk to a local race shop. I narrowed a late GM 10 bolt to fit under my 54K. Racefab in Freeland, Mi said they could cut the splined end down and extend the spline if the axles weren't smaller in size in the area that needed splining. I think he said they broached the splines but don't quote me on that. When he saw the axles he said "nope" can't because the axle was smaller in diameter there.

Had to buy new axles but in summary, Dana's are pretty popular with the race crowd so I don't see why a good shop couldn't handle them also. If not, Moser or Strange should be able to supply new ones to your spec.

You didn't mention shortening the housing but I did mine in my shop. Easy to cut the axle housings and turn a spacer piece to align the halves but pretty fiddly to get everything squared up for welding. Worked out fine in the end.

Bob

PackardV8
05-12-2017, 01:51 PM
Has anyone narrowed a 44 rear end. We need to narrow by cutting one inch off the spline and replace. Any suggestions or experiences that can be shared is appreciated.

Would be interested in knowing what necessitates narrowing.

Jack Vines

Mike Van Veghten
05-12-2017, 01:53 PM
I had mine narrowed about three inches...total, to go into my 54 wagon.

You need to be carefull removing too much (over 4") because the end of the axle tubes where the bearing is will intrude on where the "U" bolt goes around the housing. I could only go 1-1/2" per side because I used the big Ford axle bearings that are larger than the stock Stude bearings.

Back to your 1" per side, you'll have no problem with shortening the housing.
Axle, spline wise, just check the marks on the axle when you remove it from the housing. If there is a full spline cut or over 1", past where the differential gears have left their mark, you'll be fine to hack off an inch, chamfer and deburr the ends. If there isn't "full" cut splines past the marks, you'll have to have the axle shortened more than 1" and resplined.
"Most" shops will not "continue" a spline because it's difficult to align new cuts with the old spline. Starting fresh...no problem.

Just find a shop that does the work and verify with them what they can/will do and what they can't/won't do.
Anyplace that does axle narrowing...off-road, drag race work will help. Call a shop that does general drag race chassis or off-road chassis work, they'll be able to help find a local axle shop.

HINT - Shorten 3' or 4" so you can use a wheel with more offset. If you use steel wheels, it ends up looking a LOT better. Even cast aluminum wheels, a lot better look with more wheel offset.

Mike

WinM1895
05-12-2017, 04:39 PM
I had mine narrowed about three inches...total, to go into my 54 wagon.

You need to be carefull removing too much (over 4") because the end of the axle tubes where the bearing is will intrude on where the "U" bolt goes around the housing.

I could only go 1-1/2" per side because I used the big Ford axle bearings that are larger than the stock Stude bearings.
Same large ball type axle bearing used on Spicer/Dana 44 equipped Ford: 1949/56 station wagons, 1955/56 Thunderbird.

Also same as Ford 9" rear axle: 1957/59 Ranchero/Skyliner (flip top), 1957/76 Thunderbird, 1966/86 Bronco, 1957/79 F100; 1975/86 F150 and etc.

The original bearing was stamped with BIN (Bearing Industry Number) 88128

Ford replaced the part number several times in the 1960's/70's, these bearings have different BIN's.

mike super
05-13-2017, 08:34 AM
Thanks for the info everyone. Reason for asking.... I could not get the proper backspace on the wire wheels I purchased from the wheelsmith. Easy route is to buy new wheels. We shall see.

bezhawk
05-13-2017, 08:47 AM
Dayton wire wheels will rework any brand wire wheel. Also restore respoke and rechrome.

Mike Van Veghten
05-13-2017, 01:16 PM
WinM -

Ford used several bearings in the 50's/60"s.

The large bearing Ford is larger than Dana bearings, which is what I used. Both the od and id, and width are larger.

Mike

WinM1895
05-13-2017, 02:08 PM
WinM -

Ford used several bearings in the 50's/60"s.

The large bearing Ford is larger than Dana bearings, which is what I used. Both the od and id, and width are larger.

Mike
Yes, I'm aware. I typed the bearing info in post #6 from the 1949/59, 1960/64, 1965/72 & 1973/79 Ford Passenger Car Parts.

The F100/150 info I use on a regular basis on FTE (ford-trucks.com), so I didn't need to look up their bearing applications.

bezhawk
05-13-2017, 02:42 PM
Some of the Ford trucks used a sealed bearing, that is what the R3 axles used. totally different from any Stude rear end and larger axles too.

WinM1895
05-13-2017, 03:56 PM
Some of the Ford trucks used a sealed bearing, that is what the R3 axles used. totally different from any Stude rear end and larger axles too.
D4AZ-1225-A .. Tapered Roller Axle Bearing & Seal Combination (FoMoCo: The seal [D4AZ-1177-A] was available by itself, but not the bearing).

Bearing stamped with BIN: U-399-A

1974/79 F100 & misc Ford/Merc Passenger Cars; 1975/79 F150 & E100/150; 1978/79 Bronco.

All the above could also have the large 9" ball bearing. And the thing is, there's no way to know which type of bearing is present, until an axle is pulled. :mad:

bezhawk
05-13-2017, 05:32 PM
It wasn't that new as I recall, it was a 71 f-100 bearing.

54stude
05-13-2017, 05:37 PM
I wonder if the are flanged axles available for the 50-52 housing? Or if the flanged axles available have enough spline to be shortened 1"?

WinM1895
05-14-2017, 11:38 AM
It wasn't that new as I recall, it was a 71 f-100 bearing.
1970/72 F100's were available with an optional 3,600 lbs. capacity H/D 9" rear axle with a 9 3/8" ring gear, 31 spline axle shafts and 4 pinion Traction Lock (Limited Slip).

This rear axle used a unique ball type axle bearing (D0TZ-1225-A - stamped with BIN: 1580) and seal (C9VY-1177-A).

The standard equipment 1957/72 F100 9" rear axle had a 9" ring gear, 3,300 lbs. capacity with 28 spline axle shafts without Limited Slip.

bezhawk
05-14-2017, 12:13 PM
1970/72 F100's were available with an optional 3,600 lbs. capacity H/D 9" rear axle with a 9 3/8" ring gear, 31 spline axle shafts and 4 pinion Traction Lock (Limited Slip).

This rear axle used a unique ball type axle bearing (D0TZ-1225-A - stamped with BIN: 1580) and seal (C9VY-1177-A).

The standard equipment 1957/72 F100 9" rear axle had a 9" ring gear, 3,300 lbs. capacity with 28 spline axle shafts without Limited Slip.Studebaker never used a 9" Ford axle. Ford DID use Dana Spicer axles. This is what the conversation is pertaining to. Thank you for your knowlegeable input on FORDS.

WinM1895
05-14-2017, 12:21 PM
Studebaker never used a 9" Ford axle.

Ford DID use Dana Spicer axles. This is what the conversation is pertaining to. Thank you for your knowlegeable input on FORDS.
I'm well aware of this.

Member in post #5 said he used a larger Ford axle bearing in lieu of the Studebaker axle bearing.

So, I gave the applications for it, as the same large ball bearing was used with the Spicer/Dana 44 and 9" (excepting 9 3/8" ring gear and 1974/79's with tapered roller bearing/seal).

And what you may not know is, that some 1976/79 F100/150's also came with Spicer/Dana 44 rear axles.

I try to help members of this site, if I know that Ford & Studebaker used the same parts.

I do the same thing on FTE (Ford Truck Enthusiasts - ford-trucks.com) when people show up asking questions inre to Studebakers.