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06-18-2013, 10:16 AM | #1 |
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1952 Fordomatic rear-end ratio?
I'm corresponding with a seller about the '52 Ford passenger-car axle he has for sale. He says it's from an original automatic car - what was available with the auto? My books are all packed away, but I seem to recall 3.73 was standard with something higher as an option?
Thanks for any help. |
06-18-2013, 11:01 AM | #2 |
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Re: 1952 Fordomatic rear-end ratio?
I think 3.73 is correct with automatic. 3.90 with standard and 4.11 with overdrive. Charles
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06-18-2013, 12:35 PM | #3 |
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Re: 1952 Fordomatic rear-end ratio?
Thanks!
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06-18-2013, 12:36 PM | #4 |
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Re: 1952 Fordomatic rear-end ratio?
The correct rear axle ratio for a Fordomatic Drive is 3:31. An optional ratio of 3:54 was available.
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06-18-2013, 12:55 PM | #5 |
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Re: 1952 Fordomatic rear-end ratio?
Well, that would be even better.
I wonder where I got 3.73? Was there originally a tag with a code or some other way to tell without counting teeth or turns? |
06-18-2013, 01:16 PM | #6 |
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Re: 1952 Fordomatic rear-end ratio?
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06-18-2013, 05:07 PM | #7 |
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Re: 1952 Fordomatic rear-end ratio?
The 3:73 ratio was used for standard transmission cars.
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06-18-2013, 05:36 PM | #8 |
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Re: 1952 Fordomatic rear-end ratio?
Just FYI: My 53' Merc-O-Matic is a 3:54...but it was the end of the run of flatheads so maybe that is all they had left.
Last edited by Merc Cruzer; 06-18-2013 at 09:20 PM. |
06-19-2013, 07:25 AM | #9 |
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Re: 1952 Fordomatic rear-end ratio?
My Fordomatic rear is 3:31 ...nice cruiser!
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06-19-2013, 07:49 AM | #10 |
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Re: 1952 Fordomatic rear-end ratio?
Not really because it was end of run but because the convertible and the wagon weighed more and both used the 3:54
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06-19-2013, 12:05 PM | #11 |
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Re: 1952 Fordomatic rear-end ratio?
Good to know
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10-24-2016, 06:16 PM | #12 |
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Re: 1952 Fordomatic rear-end ratio?
just blew our rear axle in 52 with ford o matic. where do you find one to replace and what years fit?
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10-24-2016, 07:47 PM | #13 |
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Re: 1952 Fordomatic rear-end ratio?
David,
You never said if you're '52 is a V8 or 6 cyl. I think they may have used different ratio's. Sal |
10-24-2016, 08:10 PM | #14 |
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Re: 1952 Fordomatic rear-end ratio?
Any52-56 rear should fit. Always check length and spring pad width.
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10-24-2016, 09:10 PM | #15 |
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Re: 1952 Fordomatic rear-end ratio?
found a Glenn Mitchell interchange manual (1961) that says Ford 52 to 54 and Merc 52-54 if you change out backing plates. V8 ratio 3:31
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10-24-2016, 10:01 PM | #16 |
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Re: 1952 Fordomatic rear-end ratio?
I believe Richardtx correct. Once researched and read that 3.31 was popular due to better pick-up, and that not many 6 cyl were sold with the matics due to lower power. Yet there's a few 6 owners out-there that love their cars.
There are a few matic owners that have/are converting to standard which is a significant undertaking. Maybe if you patient you'll get lucky and come across one. |
10-24-2016, 10:06 PM | #17 |
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Re: 1952 Fordomatic rear-end ratio?
Have a 51 Merc o matic rear for sale, $150, new brakes and drums.
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10-25-2016, 08:11 AM | #18 |
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Re: 1952 Fordomatic rear-end ratio?
i ave a 1953 with fordomatic and the tag on the differential says 3.54
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10-25-2016, 09:39 AM | #19 |
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Re: 1952 Fordomatic rear-end ratio?
3.31 is what all my books say for the 52 automatic equipped (Mercury). Seems to me mine has the number stamped into the axle housing. Thought I had a picture of it but can't find it now.
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10-25-2016, 08:21 PM | #20 |
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Re: 1952 Fordomatic rear-end ratio?
My 51 "Mercomatic" had a 3:07. That was in 1960. I can't say if it was factory installed or not. When I put a stick in it, it had to go. I had to downshift for every hill.
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