The Ford Barn

pooch · 03-21-2013, 04:45 PM

http://www.ebay.com.au/itm/151014095...=p5197.c0.m619

A Henry Ford designed overdrive.

Was a factory shortened tailshaft made for this?

James Rogers · 03-21-2013, 04:55 PM

it appears to be a high/low box for a AA truck.

kingbee · 03-21-2013, 04:58 PM

Did you notice it's actually an underdrive?

Joe K · 03-21-2013, 05:14 PM

"Dual High" so named in marketing hubris of 1928. Actually more a "dual low."

The AA truck might get 42 mph with a high speed rear end. Give that maybe 32 mph with the dual low engaged.

I don't want to talk about a low speed rear with a dual high.

Joe K

columbiA · 03-21-2013, 09:40 PM

Sponsored Links (Register now to hide all advertisements)

To install the Dual High aux trans in the 28 AA,the coupling shaft assy was removed & the aux trans was installed in its place.It just gives you a slow & slower speeds-great for pulling very heavy loads.A much better choice would be an AA Warford 3-speed aux trans which gives you an under,direct & overdrive.It also fits in place of the coupling shaft

03-21-2013, 04:45 PM	#1
pooch Senior Member Join Date: Sep 2010 Location: South Coast NSW Australia Posts: 2,596	Joey box http://www.ebay.com.au/itm/151014095...=p5197.c0.m619 A Henry Ford designed overdrive. Was a factory shortened tailshaft made for this?

03-21-2013, 04:55 PM	#2
James Rogers Senior Member Join Date: May 2010 Location: Asheville,NC Posts: 3,104	Re: Joey box it appears to be a high/low box for a AA truck. __________________ http://www.model-a-ford-4bangers.com/

03-21-2013, 04:58 PM	#3
kingbee Senior Member Join Date: Nov 2011 Location: Northern Chicago suburb Posts: 105	Re: Joey box Did you notice it's actually an underdrive?

03-21-2013, 05:14 PM	#4
Joe K Senior Member Join Date: Jul 2010 Location: Cow Hampshire Posts: 4,611	Re: Joey box "Dual High" so named in marketing hubris of 1928. Actually more a "dual low." The AA truck might get 42 mph with a high speed rear end. Give that maybe 32 mph with the dual low engaged. I don't want to talk about a low speed rear with a dual high. Joe K __________________ Shudda kept the horse.

03-21-2013, 09:40 PM	#5
columbiA Senior Member Join Date: Nov 2011 Location: B.C. Canada Posts: 1,746	Re: Joey box Sponsored Links (Register now to hide all advertisements) To install the Dual High aux trans in the 28 AA,the coupling shaft assy was removed & the aux trans was installed in its place.It just gives you a slow & slower speeds-great for pulling very heavy loads.A much better choice would be an AA Warford 3-speed aux trans which gives you an under,direct & overdrive.It also fits in place of the coupling shaft