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06-18-2010, 02:29 PM | #1 |
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Join Date: Jun 2010
Posts: 11
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Borg Warner R10 overdrive conversion for Model A?
I saw a picture on the internet where someone spliced a '49-'53 Ford (Borg Warner R10) overdrive into the torque tube of a Model A - looks like a great set-up. I'd like to get more information on who did it, how it works and perhaps close-up photos. I'd like to try this conversion in a '40 Ford 2 door sedan.
Thanks, MG |
06-18-2010, 09:16 PM | #2 |
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Join Date: May 2010
Location: Creston Canada BC
Posts: 609
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Re: Borg Warner R10 overdrive conversion for Model A?
Mafca publication " how to restore your model A " volume 8 gives a perfect explanation including pic's etc
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06-18-2010, 09:22 PM | #3 |
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Join Date: May 2010
Location: Massachusetts
Posts: 259
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Re: Borg Warner R10 overdrive conversion for Model A?
Bill Swigart Jr in Redding, CA is the go to guy for Borg-Warner conversions.
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06-21-2010, 02:15 PM | #4 |
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Join Date: Jun 2010
Posts: 11
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Re: Borg Warner R10 overdrive conversion for Model A?
Many thanks for the replies!
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06-21-2010, 11:14 PM | #5 |
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Join Date: May 2010
Location: stuart, fl
Posts: 156
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Re: Borg Warner R10 overdrive conversion for Model A?
have B/W o-drives in 2 model a's .had to change from 21'' tires to 16'' to have enough power in the 29. put 4:11 gears in rear while instaling the o-drive in the 30 truck . i like the B/W because i can run in 2nd. gear o/d in the mountains where hi is to hi and 2nd is to lo. also have a columbia in a car, have 4:44 rear gears w/26tooth zypher trans. gears 7.00-16 tires, good combo.
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06-21-2010, 11:28 PM | #6 |
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Location: Westlake Village, CA
Posts: 477
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Re: Borg Warner R10 overdrive conversion for Model A?
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03-16-2011, 08:33 AM | #7 | |
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Join Date: Mar 2011
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Re: Borg Warner R10 overdrive conversion for Model A?
Quote:
Contact me if you want to talk about it. You can click through on the left side bar to my email contact. Doug |
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03-16-2011, 08:55 AM | #8 |
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Join Date: May 2010
Location: Northeast Penna
Posts: 2,108
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Re: Borg Warner R10 overdrive conversion for Model A?
FYI on rear-end ratios: most 1930's - 1940's cars that had OD from the Factory had ring & pinion ratios in the 3.9 - 4.11 - 4.3 - 4.6 territory ( 16-17" tire sizes average ).
That seemed to be a good compromise between OD for the Highway without making them too "doggy" on hills... For example, take a garden-variety 1940 MoPar six with a 4.11 rear, and pop a 27% B-W OD behind it, and get a resultant final-drive ratio of 3.0003 : 1 - pretty tall gears indeed, especially for a 90 to 110 HP six. Put that same 27% B-W OD into a Model A with stock 3.78 rear, and you get a 2.759 : 1 effective final-drive ratio... very tall indeed. |
03-18-2011, 12:58 PM | #9 |
Junior Member
Join Date: May 2010
Location: Cincinnati, Ohio
Posts: 2
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Re: Borg Warner R10 overdrive conversion for Model A?
Lloyd Young in Ohio make a great reverse cut out setup for the Borg Warner OD. You step on the clutch and it kicks out the OD. Lloyd is super knowledgable on the Overdrives. 614-837-7832
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03-18-2011, 01:23 PM | #10 |
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Join Date: May 2010
Location: Southern California
Posts: 3,131
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Re: Borg Warner R10 overdrive conversion for Model A?
Mitch & Rich of bakersfield, CA who build the Volvo overdrive mod for a Model A came up with a device to prevent backing up with the overdrive solenoid engaged. It works as well for the Borg Warner.
They install a cut out switch in a hole drilled into the end of the tunnel knob on the transmission tower (passenger side). When shifting into reverse the shifting shaft enters this tunnel and opens a normally closed switch that removes power from the solenoid. The angle placement of the switch is critical. Straight back it interferes with the cross member. Too high and the switch will not activate. Tom Endy |
04-22-2012, 04:28 PM | #11 |
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Join Date: May 2011
Location: Vancouver Washington
Posts: 9
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Re: Borg Warner R10 overdrive conversion for Model A?
Bill Swigart does them i have one of the original ones from Burt Hilner who sold his company to Bill Swigart
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04-22-2012, 04:39 PM | #12 |
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Join Date: Aug 2010
Location: Grass Valley,CA
Posts: 295
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Re: Borg Warner R10 overdrive conversion for Model A?
I drove a Borg-Warner for 18 years...loved it..til I drove a sedan with a Mitchell OD.
that afternoon I ordered my Mitchell...that was 85,000 miles ago..the best money that I've ever spent !! no gizmos to help you into reverse !! Bruce Davis [email protected] |
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