The Ford Barn

john mullen · 10-04-2017, 04:01 PM

what is involved in converting a 1940 ford truck 3 speed top loader transmission to open drive ??..I have a 1940 tranny and want to use it in a 48 to 52 f1 what's needed to change it over ???

RalphM · 10-04-2017, 06:23 PM

Output shaft, and rear mount/ bearing/seal retainer are the main differences.

Barn Junk · 10-05-2017, 06:20 PM

Be careful. The output shaft from a 1942-1950 Ford pickup light duty 3-speed will do the conversion. An output shaft from a 1951-1952 Ford pickup light duty 3-speed WILL NOT. The low gear splines on the 1951-2 shaft were changed making it necessary to keep all the gears together.

V8COOPMAN · 10-06-2017, 12:43 PM

Here are the pieces you'll need. DD

George/Maine · 10-06-2017, 07:30 PM

The shaft and trans mount are on Epay now.

RalphM · 10-06-2017, 10:13 PM

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Looks like this when your done.

deucemac · 10-06-2017, 11:16 PM

Don't for get the slip yoke

10-04-2017, 04:01 PM	#1
john mullen Senior Member Join Date: Jan 2012 Location: Lanexa Va Posts: 254	closed to open drive transmission what is involved in converting a 1940 ford truck 3 speed top loader transmission to open drive ??..I have a 1940 tranny and want to use it in a 48 to 52 f1 what's needed to change it over ???

10-04-2017, 06:23 PM	#2
RalphM Senior Member Join Date: Nov 2015 Location: North Pole, Alaska Posts: 2,651	Re: closed to open drive transmission Output shaft, and rear mount/ bearing/seal retainer are the main differences.

10-05-2017, 06:20 PM	#3
Barn Junk Senior Member Join Date: May 2010 Location: WA state Posts: 771	Re: closed to open drive transmission Be careful. The output shaft from a 1942-1950 Ford pickup light duty 3-speed will do the conversion. An output shaft from a 1951-1952 Ford pickup light duty 3-speed WILL NOT. The low gear splines on the 1951-2 shaft were changed making it necessary to keep all the gears together.

10-06-2017, 12:43 PM	#4
V8COOPMAN Senior Member Join Date: May 2010 Location: East Shore of LAKE HOUSTON Posts: 11,113	Re: closed to open drive transmission Here are the pieces you'll need. DD __________________ *Click Links Below* __ ▼ *'35-'36 W/8BA & MECHANICAL FAN* *T5 W/TORQUE TUBE*

10-06-2017, 07:30 PM	#5
George/Maine Senior Member Join Date: May 2010 Location: Mid coast Maine Posts: 1,878	Re: closed to open drive transmission The shaft and trans mount are on Epay now.

10-06-2017, 11:16 PM	#7
deucemac Senior Member Join Date: May 2010 Location: Tehachapi, Ca. Posts: 208	Re: closed to open drive transmission Don't for get the slip yoke