Help Decode Supposed 1950 Trans/Rear
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Senior User
Joined: Jul 2010
Posts: 102
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From: Goodyear, AZ
Help Decode Supposed 1950 Trans/Rear
I need to do an inspection and possibly order drive-train parts.
After some time, I am not always sure what I have is stock so I am doing some due diligence and researching.
The Trans is a 4 speed marked as follows...
T 8 D-1A
8-1 21c 7049 B2
59T-7006
N .4.
The rear is as follows...
41
0141
16429 (or 8)
Tag;
W
51 over 13
10 Bolts looks and like a "Spicer" on page 144 of the 1948-1956 Parts and Accessories catalog.
Again, this is supposed to be a 1950 F1, possibly a late year '50 but I can't read the stampings on the firewall.
Thanks for the help.
Dan Sokol
Goodyear, AZ
After some time, I am not always sure what I have is stock so I am doing some due diligence and researching.
The Trans is a 4 speed marked as follows...
T 8 D-1A
8-1 21c 7049 B2
59T-7006
N .4.
The rear is as follows...
41
0141
16429 (or 8)
Tag;
W
51 over 13
10 Bolts looks and like a "Spicer" on page 144 of the 1948-1956 Parts and Accessories catalog.
Again, this is supposed to be a 1950 F1, possibly a late year '50 but I can't read the stampings on the firewall.
Thanks for the help.
Dan Sokol
Goodyear, AZ
Lead Driver
Joined: Oct 1999
Posts: 6,776
Likes: 553
From: Kalispell, MT
Looks like the normal Non-synchro'd 4 speed trans used in trucks from F1 up.
The 41 indicates the rear is the earlier Spicer 41 and not a newer Dana 44 so parts are harder to come by.
The tag 51/13 figures to 3.92 which is again the early ratio found in 48-50 trucks. 51/52 went to 3.73 iirc
The 41 indicates the rear is the earlier Spicer 41 and not a newer Dana 44 so parts are harder to come by.
The tag 51/13 figures to 3.92 which is again the early ratio found in 48-50 trucks. 51/52 went to 3.73 iirc
Logistics Pro
Joined: Jun 2010
Posts: 4,963
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From: East KY
Actually it was the other way around. The 48-50's primarily had 3.73's. Ford went with the 3.92's in the 51-52's. It's interesting that the OP has a Dana 41 with a supposed 3.92. I THINK it was an option.
Fleet Owner
Joined: Jul 2004
Posts: 27,291
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From: NM
A D41 with the 3.92 was optional on '48 -'50's.
Lead Driver
Joined: Oct 1999
Posts: 6,776
Likes: 553
From: Kalispell, MT
What do I know??
My 48 came with the venerable 4.27I could've sworn it was Ross who convinced me they did 3.73s.... oh, well
Dan, it's not a 1941, just a model 41
Fleet Owner
Joined: Jul 2004
Posts: 27,291
Likes: 1,055
From: NM
Not sure what you mean, MT? 3.73 was standard on 48-50's, 4.27 was a common option, 3.92 was (from what I've seen) a relatively rare option. Starting in '51, 3.92 was standard, no option for a 3.73, 4.27 still an option.
On a side note, I've never figured out what that Star next to the 0M-4209 p/n means, but in this case from past threads I believe it means it is a Service Part for 48-50, but only came from the factory in '50.
On a side note, I've never figured out what that Star next to the 0M-4209 p/n means, but in this case from past threads I believe it means it is a Service Part for 48-50, but only came from the factory in '50.
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Lead Driver
Joined: Oct 1999
Posts: 6,776
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From: Kalispell, MT
I mean I'm still learning - lol. ..and I'm old enuf that I'm learning things I used to know all over again.
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From: Northville, MI
Hotshot
Joined: Oct 2009
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From: Burbank, WA
Pete, you're making the common mistake of confusing the service parts catalog with a production build bible. The parts catalog (it's not a manual) only lists the replacement parts currently available that will apply to any given model of vehicle, at the time of its printing. The catalog is constantly changed and updates are reprinted regularly. By the time your book was published, many hundreds of parts may have been discontinued or otherwise superceded with a different part/number, etc., and no longer offered as replacement, service parts. If a part, like the gear set in question, isn't something they sold a lot of, it would've been discontinued quickly.
Logistics Pro
Joined: Nov 2011
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From: Northville, MI
So it looks like a 1950 F1 could come with 3.73, 3.92 or 4.27:1 ratios.
You are right Wayne. Certainly the "Operators Manuals", even today, are printed at the first of the year and are never update. They always miss things.
Mountain Pass
Joined: Dec 2014
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help decode supposed 1950 Trans/Rear
I just found this interesting thread. My 51 F1 has a floorshift and I think its the original gearbox (haven't looked at the numbers) but the diff numbers are a letter A (in a circle), 44, and 18419.....plus the U.S pat nos. There is also the number 427 stamped on the axle tube. What kind of gearing can I expect from this setup......decent cruising or stump pulling?
Thanks for your help and advice.
Thanks for your help and advice.
Logistics Pro
Joined: Nov 2011
Posts: 4,685
Likes: 80
From: Northville, MI
I just found this interesting thread. My 51 F1 has a floorshift and I think its the original gearbox (haven't looked at the numbers) but the diff numbers are a letter A (in a circle), 44, and 18419.....plus the U.S pat nos. There is also the number 427 stamped on the axle tube. What kind of gearing can I expect from this setup......decent cruising or stump pulling?
Thanks for your help and advice.
Thanks for your help and advice.
Logistics Pro
Joined: Jun 2010
Posts: 4,963
Likes: 261
From: East KY
I just found this interesting thread. My 51 F1 has a floorshift and I think its the original gearbox (haven't looked at the numbers) but the diff numbers are a letter A (in a circle), 44, and 18419.....plus the U.S pat nos. There is also the number 427 stamped on the axle tube. What kind of gearing can I expect from this setup......decent cruising or stump pulling?
Thanks for your help and advice.
Thanks for your help and advice.
A 1951 F-1 would have had a column shift transmission. I suspect your truck had a swap somewhere along the line.