Flathead V8 Installation

AA Ford Discussion Group relating to the repair and restoration of your AA Ford.
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gearling
Posts: 58
Joined: October 30th, 2015, 6:59 am
Body Type: AA
Model Year: 1929

Flathead V8 Installation

Post by gearling » November 27th, 2018, 8:26 am

After attending to other things, I'm finally finding time for my AAs !!!!!
Just exploring the feasibility/practicality of stuffing a Flathead V8 from a '55 Sedan in a '28 AA flatbed with a worm gear drive rear end.
It is well within my skillset to modify or fabricate cross members, linkages, fuel lines, wiring, etc. My questions have more to do with the drivetrain than anything else. AND, just me being me, I will take measures to make the conversion reversible.
My questions are:
Not if, but what will I most likely need to fabricate or purchase?
Will the V8 bolt up to the truck transmission, if not, will the transmission from the car bolt up to the truck driveshaft?
Will the added horsepower put my worm gear rear end at risk of undue wear or damage?
Thanks in advance for shared experience, knowledge and wisdom!

KimVanOrder
Posts: 469
Joined: August 11th, 2013, 4:25 pm
Body Type: 82-A Platform
Model Year: 1928
Location: Hamilton, Mich.

Re: Flathead V8 Installation

Post by KimVanOrder » November 27th, 2018, 8:33 am

Maybe. :wink:
KVO
Dec. '28 AA

gearling
Posts: 58
Joined: October 30th, 2015, 6:59 am
Body Type: AA
Model Year: 1929

Re: Flathead V8 Installation

Post by gearling » November 27th, 2018, 8:43 am

Would that be a definite maybe, or is it purely hypothetical?

gearling
Posts: 58
Joined: October 30th, 2015, 6:59 am
Body Type: AA
Model Year: 1929

Re: Flathead V8 Installation

Post by gearling » November 27th, 2018, 10:27 am

I haven't acquired the engine yet, but after looking over the truck and at flathead V8 photos online, it appears to be a fairly straightforward job with everything I already have onhamd.... considering the fact that the driveshaft has previously been cut and extended with a segment of iron pipe (threads and all) welded to the shaft.

flatford39
Posts: 440
Joined: September 24th, 2009, 3:06 pm
Body Type: Express
Model Year: 1928
Location: NE Illinois

Re: Flathead V8 Installation

Post by flatford39 » November 27th, 2018, 2:15 pm

55 would be OHV not flathead just saying. That rear end is going to dictate your speed. A lot of work for very little improvement in my mind. You may want to upgrade that rear end while your at it. I have a FH V8 in my 31 Roadster with a 39 rear end. Makes a big difference. You need to give some thought to the trans too. I am using a 39 case with 46 48 gears.

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