The Ford Barn

Bud · 03-23-2018, 07:07 PM

I am assembling a V8 transmission with 39 gears for use in my Model A.
I am using the truck transmission housing (78-7006) which is a 1/4" deeper where the wishbone adapter mounts versus a V8 car transmission. Does anyone know of a source for a different wishbone adapter bracket for this situation? I tried the one from Snyders but it does not clear any better than the bracket I already have. Either bracket would need to be shorter by .25" at least to fit.
I measured a Model A bell housing and where the wishbone cups mount and it is 7.00" from the centerline of the housing. Near as I can tell this same dimension is 7.42" from centerline for the truck V8 transmission with the bracket I am using.
Does anyone have dimensions I can reference so I can tell where this assembly is supposed to end up at?
I thought I would add this thread to the Early V8 discussion (it is on the Model A Forum right now) in case V8 owners may have some guidance.
Any help would be appreciated. Thanks.

Kube · 03-24-2018, 03:56 PM

I'm not familiar with Model A's at all. However, I can tell you with 100% certainty that a spacer was used with the four speed transmissions installed in pickup trucks, '39 -'40 to move the wishbone (ball) downward about 3/4". I do have one of those spacers.
They were NOT used with a three speed.

Bud · 03-25-2018, 08:03 PM

Thank you for your reply. I figured it out myself. I have the 3 speed transmission. The case for a truck is deeper by .25", so I have modified my bracket to suit. The bracket I am referring to is in the adapter kit to adapt a V8 transmission to a Model A.

Russ/40 · 03-26-2018, 10:47 AM

Could you post a photo of your modified bracket?

papanomad · 03-26-2018, 12:27 PM

moving the wishbone up or down will change front end caster.

Bud · 04-01-2018, 07:53 PM

Sponsored Links (Register now to hide all advertisements)

Please see the Model A thread for pictures and an explanation of what I did.

03-23-2018, 07:07 PM	#1
Bud Senior Member Join Date: May 2010 Location: Ohio Posts: 819	Wishbone Adapter I am assembling a V8 transmission with 39 gears for use in my Model A. I am using the truck transmission housing (78-7006) which is a 1/4" deeper where the wishbone adapter mounts versus a V8 car transmission. Does anyone know of a source for a different wishbone adapter bracket for this situation? I tried the one from Snyders but it does not clear any better than the bracket I already have. Either bracket would need to be shorter by .25" at least to fit. I measured a Model A bell housing and where the wishbone cups mount and it is 7.00" from the centerline of the housing. Near as I can tell this same dimension is 7.42" from centerline for the truck V8 transmission with the bracket I am using. Does anyone have dimensions I can reference so I can tell where this assembly is supposed to end up at? I thought I would add this thread to the Early V8 discussion (it is on the Model A Forum right now) in case V8 owners may have some guidance. Any help would be appreciated. Thanks.

03-24-2018, 03:56 PM	#2
Kube Senior Member Join Date: May 2010 Location: Wisconsin, USA Posts: 8,993	Re: Wishbone Adapter I'm not familiar with Model A's at all. However, I can tell you with 100% certainty that a spacer was used with the four speed transmissions installed in pickup trucks, '39 -'40 to move the wishbone (ball) downward about 3/4". I do have one of those spacers. They were NOT used with a three speed. __________________ "I can explain it for you. However, I can't understand it for you".

03-25-2018, 08:03 PM	#3
Bud Senior Member Join Date: May 2010 Location: Ohio Posts: 819	Re: Wishbone Adapter Thank you for your reply. I figured it out myself. I have the 3 speed transmission. The case for a truck is deeper by .25", so I have modified my bracket to suit. The bracket I am referring to is in the adapter kit to adapt a V8 transmission to a Model A.

03-26-2018, 10:47 AM	#4
Russ/40 Senior Member Join Date: May 2010 Location: Santee, California Posts: 3,505	Re: Wishbone Adapter Could you post a photo of your modified bracket?

03-26-2018, 12:27 PM	#5
papanomad Senior Member Join Date: Feb 2014 Location: clear lake, iowa Posts: 157	Re: Wishbone Adapter moving the wishbone up or down will change front end caster.

04-01-2018, 07:53 PM	#6
Bud Senior Member Join Date: May 2010 Location: Ohio Posts: 819	Re: Wishbone Adapter Sponsored Links (Register now to hide all advertisements) Please see the Model A thread for pictures and an explanation of what I did.