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12-07-2014, 02:43 AM | #1 |
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Join Date: Nov 2011
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What Does This Overdrive Tranny Fit?
Hello All -
I haven't posted in quite awhile, but I do need some assistance. I have an overdrive tranny with the case stamped 8M-7222. I found that model number online in one chat-room and it was associated with a 1952 F1 pickup. Can anyone confirm/deny if that's what it came out of. What else might it have come out of? Here's a photo: Thanks in advance! |
12-07-2014, 03:06 AM | #2 |
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Location: Santa Rosa, Calif.
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Re: What Does This Overdrive Tranny Fit?
1949 - 50 Mercury
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12-07-2014, 07:45 AM | #3 |
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Re: What Does This Overdrive Tranny Fit?
And 51, the shift arms are for a Hurst type aftermarket shifter.
Martin. |
12-07-2014, 07:58 AM | #4 |
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Re: What Does This Overdrive Tranny Fit?
My 51 Merc didn't have that tranny with the bell on it.
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12-07-2014, 11:01 AM | #5 |
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Re: What Does This Overdrive Tranny Fit?
Late 1950 thru 52 pickups( column shift ) did not have an overdrive tranny available ( nor 48-50 ). The 53-54 years did, but not with the 8CM 7222 shift tower. It was marked TAAA 7222-A . Same part was used on the L/D regular trans. for 53-54. That's a car trans, not truck.
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12-08-2014, 01:07 PM | #6 | |
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Re: What Does This Overdrive Tranny Fit?
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Quote:
In 1952 my father bought a new top of the line '52 F1 V8 Ford pickup. The trans was a 3 spd column with OD. I probably drove that truck in excess 20k throughout many of the western states. I loved that truck, was probably the best pickup my dad ever had. Dad traded the '52 in on a new '54 6 cylinder F1, it was a piece of junk, hated that truck. It was totaled in an accident in Nevada in '55, fortunately I was not driving it.. One of the pickups on my "bucket list" is a '52 Ford F1 V8 w/OD, fully equipped, in the same dark green color as my Dads....
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12-07-2014, 01:02 PM | #7 |
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Re: What Does This Overdrive Tranny Fit?
Any flathead from 32 to 53 with the right bell housing and clutch.
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12-07-2014, 01:29 PM | #8 |
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Re: What Does This Overdrive Tranny Fit?
The arms are wrong for a Mercury. OEM Mercury arms are riveted on. I'd have to see the input shaft to see whether it is a 1 3/8"-10-spline or a 1"-10-spline. 1 3/8" could be Merc or F1. The Arms could have been changed. the Lock out switch is 50/51. The early ones were actuated by the lock out rod and the later ones by a ball bearing seated in a taper on the lock out rod.
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12-07-2014, 11:38 PM | #9 |
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Join Date: Nov 2011
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Re: What Does This Overdrive Tranny Fit?
Thanks everyone for your response. Here's a view from bell-housing side:
. . . and here's an up-close shot of the shifters: So are we still thinking 49-50 Merc? Not 51? And probably not pickups? Thanks again!! |
12-08-2014, 01:16 AM | #10 | |
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Re: What Does This Overdrive Tranny Fit?
Quote:
.
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12-08-2014, 12:21 AM | #11 |
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Re: What Does This Overdrive Tranny Fit?
Original question - what does it fit? Old Ron nailed it. If you want to know what it CAME from, then the 'Merc' answers apply. BTW, the '8' in the case number refers to a part number that was released for production in 1948, and the 'M' is for Mercury. At least I think that is correct. If not, someone here will correct me.
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12-08-2014, 02:01 AM | #12 |
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Re: What Does This Overdrive Tranny Fit?
The attached photos are: 1. Rebuilt 49 Merc O/D with the OEM shift arms. 2. O/D trans with modified shift tower-bench test 3. O/D Trans with modified shift tower in the 40 Tonner. Like Martin suggests your trans has some sort of aftermarket shift arms. Also it looks like the O/D lockout arm is mounted upside down. It should be pointed down.
Martin. Your Christmas card is in the mail.... Good luck with the project!!!! Les Williams |
12-08-2014, 02:27 AM | #13 |
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Re: What Does This Overdrive Tranny Fit?
Les, your a gentleman,
Thank you very much. Martin. |
12-08-2014, 09:49 AM | #14 |
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Re: What Does This Overdrive Tranny Fit?
Very interesting case modification, would like to see more of it. Doz the stick actually work??
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12-08-2014, 01:03 PM | #15 | |
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Re: What Does This Overdrive Tranny Fit?
Quote:
Bob |
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12-08-2014, 10:19 AM | #16 |
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Join Date: Feb 2012
Posts: 76
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Re: What Does This Overdrive Tranny Fit?
I'm with Ron on the top shift conversion. Very nicely done. Appears to be a four speed truck shift tower. I'd like to know more as well. Ray
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12-08-2014, 11:21 AM | #17 |
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Re: What Does This Overdrive Tranny Fit?
Me too!
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12-08-2014, 01:00 PM | #18 |
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Re: What Does This Overdrive Tranny Fit?
Les,
If that works as well as it looks, it's slicker than cow snot. I also want to know more. Jim |
12-08-2014, 01:02 PM | #19 |
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Location: San Antonio, Texas
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Re: What Does This Overdrive Tranny Fit?
Expaver has posted pics & info for this mod before. The 4-speed shift tower is bolted to the top of the trans using a fabricated plate to bolt it to the inspection port at the front and the OD housing bolts at the rear. He fabricated the sliding plates that do the shifting through some clamp on shift levers similar to the ones in Wayneyadas pics. This would be a good way to have a top shift BW electric OD transmission.
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12-08-2014, 01:17 PM | #20 |
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Re: What Does This Overdrive Tranny Fit?
Both of my 51 Mercs have the early type. From all the info I've found so far, FoMoCo used the early bell type transmissions until early February 1951 when they finally ran out. The Late 51 types are pretty much the same as the 51 Ford trans with the 4-bolt mount up pattern.
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