Mitchell overdrive

[38 coupe]

flatmotor40, can you post pictures of your installation? That would be great.

[19Fordy]

Originally Posted by 38 coupe

flatmotor40, can you post pictures of your installation? That would be great.

Yes, Please do. I would like to see what the entire unit looks like installed -including the shift mechanism. Thanks.

[Kahuna]

I also want to see the 370 CI flathead

[40Pickup]

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

[Django]

Originally Posted by 40Pickup

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

Very interesting! Can you give us more details on what you had to do to make it work?

[John T]

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Some times I hit the wrong key. Should have been 270 cu. in.

[Kahuna]

40Pickup
Is that a lockout switch on the shift housing to disable the O/D in reverse?
Thanks
Jim

[40Pickup]

Originally Posted by Django

Very interesting! Can you give us more details on what you had to do to make it work?

Let me come back later, Santa Claus knocking on my door.
Merry Christmas to you all.

/40Pickup

[Mart]

Originally Posted by Django

Very interesting! Can you give us more details on what you had to do to make it work?

I, too, would be VERY interested in the details of this conversion - I have all the parts laid out in my garage and am about to try and make one myself.

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.

[40Pickup]

Originally Posted by Kahuna

40Pickup
Is that a lockout switch on the shift housing to disable the O/D in reverse?
Thanks
Jim

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

[40Pickup]

Originally Posted by Mart

I, too, would be VERY interested in the details of this conversion - I have all the parts laid out in my garage and am about to try and make one myself.

I must say your conversion looks first class and would appear to be a neat and efficient unit.

Do you have any pictures of: = For the most part, I take photos while on what I do, but unfortunately not this time.
But I shall attempt to come back with some drawings that would clarify.

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? = No

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? = If I understand correctly, you should keep the unsprung weight as low as possible and therefore the O / D when mounted as far forward as possible, while you have to take into account whether there is sufficient space.


Is the lubrication of the unit self contained or shared with the axle? = Self contained (ATF).


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.

Mart, hope this can help a bit, see the text above.

/ 40Pickup

[40Pickup]

Originally Posted by flathead47

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.

Flathead47, it was not meant that I would intrude on your thread.
I apologize for that!

/ 40Pickup

[John T]

Some times I hit the wrong key. It should have read 270 cu. in.

[John T]

Some times I it the wrong key. it should have read 270 cu. in.

[Mart]

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.

[flatmotor40]

have not figured out how to send pics not good at computer need 10 yr old but no one around I'll try

[flathead47]

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

[jerry grayson]

Originally Posted by 52merc

i think you will find its 3.78 standard ratio for 46fords

Maybe in NZ, but 3.54 in US

[JM 35 Sedan]

[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 ?

[40Pickup]

Some drawings of my overdrive conversion. Hope it can be useful!
It is free to come with questions.

/ 40Pickup