Issues with a '50 motor into a '40 car?

[32 Model B]

I know this may seem like a dumb question to some of you but here goes: I have a nice 1940 deluxe sedan that I bought without a motor, but I have a good rebuildable 1950 pick-up motor. Will it go in place of the original engine without to much trouble. I know the radiator hoses are different, but what about the exhaust, water pumps, front pulley,etc. I did read all about the differences in the flywheels which was very helpful. Any help with this is greatly appreciated. Thanks, Bob.

[32 Model B]

Thank you

[flatheadA]

I've never done anything like that,but a friend of mine wanted to put a 50 merc. engine in his 38 sedan but found it would take to much work and thought it was to big.He's going with an earlier engine now a 47 or 48 ford.

[fortyfords]

I put a 51 truck motor in my forty and all I had to do was cut the cross bar out of the fender support yoke and I put a smaller hose around the water outlet on the engine and then the original 40 hose over top of that. I used the 51 flywheel and clutch and pressure plate and put fenton headers on with some new pipes.

[flatjack9]

Bob, I have a 50 Merc engine in my 39 DeLuxe. Used all the stuff from the early engine to make it look like a 39.

[Charlie ny]

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32 B,
The big deal putting an 8ba into my '41 1/2 ton was the crank
mounted fan. I used a '39-'41 crank pulley/fan mount and repositioned
the fan belt pulley to line up with the '48 - '52 truck water pump pulleys.
E mail me off site if you have any ?????
Charlie ny
[email protected]

[jimTN]

No big deal. Exhaust manifolds off a 40 engine will work on the 8ba and if you cannot locate any early manifolds, most any muffler shop can build you a exhaust system that will fit. The fan pulley is the biggest work around you will have as 40 had a fan mounted on the crank pulley as mentioned above.

[George/Maine]

The truck water pumps you will need and lift the engine about 3 inches between frame.The Reds headers fit good.I have a 39 sedan so mine has different hoses.Make to fit.

[Barn Junk]

Originally Posted by George/Maine

The truck water pumps you will need and lift the engine about 3 inches between frame.The Reds headers fit good.I have a 39 sedan so mine has different hoses.Make to fit.

Being a 39 std model makes it a bit easier without the crank mounted fan. Did you have to trim the fan for clearance?

[19Fordy]

This is good info. from the HAMB. The engine below is the Ford 8BA or Mercury CM in a 1940 Ford with early style heads. I used a 49-51 Merc rear sump oil pan, starter plate and bellhousing, 8RT wide belt water pumps, stock 1940 motor mounts, stock 40 transmission, 10 inch clutch and pressure plate (Mercury I think) and Mercury flywheel.
It all goes in pretty easily once you solve the problem of the 8BA fan sitting too high. You can also still use the stock 40 sway bar. You can also use the 1951 Merc water pumps, but they have the small belt pulleys which can be changed. Not sure if you need to also use the "u" part that goes with the 1951 Merc motor mount shown below in the pix.
http://www.jalopyjournal.com/forum/s...into+1940+ford

http://www.jalopyjournal.com/forum/s...into+1940+ford

http://www.jalopyjournal.com/forum/s...n+to+1940+ford

[Henry/Kokomo]

Water outlets for the 8BA are available for 1.75" dia.hose. This solves the hose size differential problem. There are also adapter hoses available with one 1.25" dia end and one 1.75" dia end. The truck water pumps are a must as well as the truck bell housing since the 8BA has no cast on bell housing like your stock engine. Go for it.

[Ol' Ron]

You can also install the 40 heads on the late engines by plugging one hole on each side and increas compression in the process. Heads need a little clearancing around the valves but you can do that with a die grinder . just follow the gasket. Charlies suggestion is a good idea about the fan. This is a rather simple swap, but if you've never done it before????

[alanwoodieman]

if you remove the 8BA inner front crankshaft seal sleeve, then you can use a 39-41 front crankshaft pully

[Ol' Ron]

Skip can rebuild your 40 pumps to work with the new crank pulley. Then the 40 heads will bnolt right on. (Check valve clearance) Somebody should write a book about this.

[Charlie ny]

Alan,
You must consider alignment of the w/p pulleys and the 8ba dist on the front
RH corner of the 8ba motor. My suggestion above requires that the crank seal sleeve
remains in place.
Charlie ny

[32 Model B]

Thank you for all the suggestions and the pictures. You guys are all very helpful. I hope to put up my own pictures when its done. Thanks again, Bob.

[gearhead1952]

Originally Posted by Henry/Kokomo

Water outlets for the 8BA are available for 1.75" dia.hose. This solves the hose size differential problem. There are also adapter hoses available with one 1.25" dia end and one 1.75" dia end. The truck water pumps are a must as well as the truck bell housing since the 8BA has no cast on bell housing like your stock engine. Go for it.

Who carries the different size water outlets and adapter hoses? Thanks

[19Fordy]

Originally Posted by gearhead1952

Who carries the different size water outlets and adapter hoses? Thanks

Flathead Jack http://www.flatheadjack.com/78.html

[gearhead1952]

Originally Posted by 19Fordy

Flathead Jack http://www.flatheadjack.com/78.html

Thanks!

[oldskool]

i did this swap about 2 years ago on my 41 that also had crank mounted fan,i also used a 50 pickup engine and it is a bolt on swap ,has correct oil pan,water pumps ect ect,i had a local machine shop modify the 8BA pully to except the 40/41 fan ,they made a plate that fit inside the pulley and tapped 4 holes to match the fan,it works well but i don't like the fan being so low,if i find the time i will use the original 8BA fan setup buy raising the radiator up so the fan will clear the upper hoses..or maybe use a 46/48 radiator