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Mitchell overdrive I am thinking about installing a mitchell overdrive unit in a 46 - 48 ford convertible. Does anyone have experience with this, installation tips, pictures of installation , was it worth the effort. Thanks.
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Re: Mitchell overdrive I am considering one for our 46 so will be interested in the response to this post. I understand they are a quality gear changer and relatively easy to install. John
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Re: Mitchell overdrive Five hours to install - no looking back. Literally.
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Re: Mitchell overdrive Have one in my 38 Ford and it is great.
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Re: Mitchell overdrive i believe theres a couple of ratios that you can get with this set up hopfully someone who has one in a car like yours will advise trev:)
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Re: Mitchell overdrive I have one in my "36 and it's great. My '36 has a 3.78 rear and I have the "36"% Mitchell. Overall I believe they are a well built rugged overdrive that provides a viable option over the pricey and somewhat fragile Columbia if you're not into counting judging points at a car show. Before you order one, do the math on their advertised ratios as they think that overdrive "ratio" and "reduction" are the same. In Reality their "36 % " reduction is actually around 29% ( same as the Borg-Warner and Columbia ratios) while their "26%" is really closer to 20%. If your rear end ratio is 3.78 or higher, I'd suggest getting their 36%. It makes a huge difference in driveability that you will really enjoy. Bruce
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Re: Mitchell overdrive i think you will find its 3.78 standard ratio for 46fords
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Re: Mitchell overdrive My 47 has a 4.11 rear gear and is basically a 50-55 mph car. I have considered the 3.54 rear gear as an option , but the mitchell overdrive seems like a interesting solution to easily obtain a 65 mph car. I do not want to modify the floor of the car or have any clearance problems with the installation so that is why I was hoping there would be some pictures out there from someone who has installed one in a 46-48 ford.
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Re: Mitchell overdrive I put one in my 40 conv and it was a 36% and it does great and if you see a long hill just speed up a little and it will do just fine.Sue was really helpful because I bought it and it was a year or so before I finished the car and they siad they would make it good anyway so great people to work with
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Re: Mitchell overdrive I forgot ot tell you I oped for the cable because I didn't want a hole in the new floor
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Re: Mitchell overdrive I saw their ad in the V8 Times and was intrigued myself. How much are they?
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Re: Mitchell overdrive In my 36 Coupe I have a 354 rear and a 36% Mitchell and it works fine, but I do have a approx 370 cu. in. flathead for power.
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Re: Mitchell overdrive Does anyone have pictures of the Mitchell installed under their vehicle and of the control, either cable or shifter?
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Re: Mitchell overdrive 1 Attachment(s)
I have one in my 41 pickup, running 3:54s, love it.
Easy install, take oout the old torque tube and driveshaft, then bolt in the Mitchell. Any questions, call and talk to Sue Mitchell, she has all the answers, good people to deal with. Cost is about $2100. Either 26% or 36% overdrive. |
Re: Mitchell overdrive Thanks for the picture. That looks like it would hit the floor under my 37 (and 38 and 39 and my Dad's 40). Does anyone have pictures of one installed under a passenger car?
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Re: Mitchell overdrive Wanted to use one in my '34 sedan, but would have had to cut the seat riser and floor. Decided against it.
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Re: Mitchell overdrive Hey John T, tell me a little bit more about your 370ci flathead. That really snapped me awake. Walt
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Re: Mitchell overdrive me to !! :)
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Re: Mitchell overdrive What I had to do was move the shift arm to the bottom instead of top so it would not hit the floor when you hit a bump or someone was in the bask seat.But I had put Posie reverse eye springs on mine and it lowered it a little but teh only difference is the engage you push in instead of pull out the cable.Sue was a great help and I used syn 90w oil in mine
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Re: Mitchell overdrive flatmotor40, can you post pictures of your installation? That would be great.
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Re: Mitchell overdrive I also want to see the 370 CI flathead
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Re: Mitchell overdrive 4 Attachment(s)
Not a Mitchell overdrive, perhaps it will interest anyone anyway.
Built my from a Volvo 240/740 (Laycook) overdrive. Mounted it in my 40 pickup, I use an electric switch to activate the one seen in the photo. /40Pickup |
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Re: Mitchell overdrive Some times I hit the wrong key. Should have been 270 cu. in.
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Re: Mitchell overdrive 40Pickup
Is that a lockout switch on the shift housing to disable the O/D in reverse? Thanks Jim |
Re: Mitchell overdrive Quote:
Merry Christmas to you all. /40Pickup |
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I must say your conversion looks first class and would appear to be a neat and efficient unit. Do you have any pictures of: The adaption of the torque tube to the front of the unit? The adaption of the driveshaft to the front of the unit? Mods to the tailshaft housing? The final driveshaft from the unit to the diff pinion. Some questions.. Was any resplining involved? The positioning of the unit near the rear end of the torque tube - is there an advantage to this, or could the unit be fitted almost anywhere along the length? Is the lubrication of the unit self contained or shared with the axle? I envisage mine being a home brew job with lots of welded up shafts and parts, with the od unit towards the front of the shaft. To be able to see details of one already made up would be a great advantage. Thanks in advance, hope you can help. Merry Christmas. Mart. |
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Yes, quite true Jim! I use the same function that is as original in the Volvo. So the O / D can only be linked to the (in this case) third gear. In low gear, the risk that it will be to low oil pressure in the O / D, and you can burn the clutch on the O / D. The lockout switch is perhaps not necessary, but it makes it easier for my wife not having to think about this when she is driving the pickup. / 40Pickup |
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Mart, hope this can help a bit, see the text above. / 40Pickup |
Re: Mitchell overdrive Quote:
Flathead47, it was not meant that I would intrude on your thread. I apologize for that! / 40Pickup |
Re: Mitchell overdrive Some times I hit the wrong key. It should have read 270 cu. in.
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Re: Mitchell overdrive Some times I it the wrong key. it should have read 270 cu. in.
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Re: Mitchell overdrive 40Pickup:
Thanks for the reply - drawings would be great. John T: Yes, you do seem to be having keyboard problems. Flathead47: Sorry for the hi-jack. Merry Christmas to all.. Dinner's on the table so I'll check out for now. Mart. |
Re: Mitchell overdrive have not figured out how to send pics not good at computer need 10 yr old but no one around I'll try
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Re: Mitchell overdrive 40Pickup & Mart no apologizes required , it is all good information ..... Thank you to all who have input with this thread so far ..... Merry Christmas to all
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Re: Mitchell overdrive [QUOTE=John T;131053]Some times I hit the wrong key. Should have been 270 cu. in.[/QUOTE
I thought maybe you meant 270 instead of 370. I built a 284 and first thought man... what in the world did he do to get to 370 ci ? |
Re: Mitchell overdrive 10 Attachment(s)
Some drawings of my overdrive conversion. Hope it can be useful!
It is free to come with questions. / 40Pickup |
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