Can this be done?

Engine, fuel system, cooling system, heating, carburetors, exhaust, transmission, wheels, and other items related to the moving the car.

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Can this be done?

Postby Bob Hubbard » Mon Mar 14, 2005 4:21 pm

Can the 400 engine and transmission from my78 mark V be put in my 59 mkIV?
I haven't found a buyer for the mark v, and I am toying with the idea of swapping engine and trans to the mkIV.
There are other things from the mark v I want on the mark IV including the seats, radio,and, cd changer.
The mark v engine has less than 10,000 miles on it..
The engine in the mark IV is running great but, it would be nice to have the engine with only 10,000 miles in it.
I have been looking for Diamond Jubilee seats and console for the 59 for some time now, without any luck..
Parting the Diamond Jubilee is defenitely an option, and if I go that route, I would keep the things I want and hopefully sell the rest.
I am not sure about mounts or anything else regardind a swap, but some imput would be nice so I could make a decision.
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Postby Lugnut » Mon Mar 14, 2005 4:31 pm

Bob -

Pretty much the same issues would apply to such a swap as would apply to the ever popular question of: "Can I swap my 430/462 for a 460?"

I had a car I couldn't get rid of that had a perfectly good 351CM and FMX tranny in it. Finally ended up pulling both and sending the car to the cruncher. One of these days I'll find me a good '49-51 Merc two door and build me a for real lead sled street rod and use that engine and tranny.
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Can this be done?

Postby takearide » Thu Mar 17, 2005 11:26 am

Of course it can be done, and as the 400 from the '78 is quite a bit smaller in external dimensions than the 430 (or the 460) fitting the engine should not be a problem. Fitment of the larger C-6 trans might be an problem.

The main issue I see is that a smaller, low compression, smog controlled motor will be a large step backward in power and torque. If you are going to spend the time and money on and engine swap, why would you want a smaller motor?
'64 Lincoln Continental Convertible for a little while yet
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Postby Bob Hubbard » Thu Mar 17, 2005 6:07 pm

Well, the fact that I already have the motor is one consideration.
As for the "smog controlled" motor, that wouldn't necessarily be the case.
Seeing as where the 59 did not need the smog equipment, it would just be a matter of removing all the smog related equipment on the engine before installation.
This would cetainly add to the engine's power and performance.
(At least I assume it would>)
I haven't looked yet but one concern would be the motor mounts and their locations on both vehicles.
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Postby clark » Fri Mar 18, 2005 2:05 am

Measure everything closely and make yourself a diagram. Then measure again. When you have the old engine and tranny out, place them side by sidewith the new ones and compare the differences. Concerns are as you say, motor mounts and oil pan clearing frame, length, diameter of transmission, linkages, drive shaft hook-up and angle, and exhaust interference with steering, amoung others. Consider a modified oil pan instead of cutting the frame in any way. Most engine swaps are a challenge...(Except putting a Buick Grand National Engine into a 69 Jeep Cherokee 350....Just a bolt in on the same mounts and tranny....Wow, who'd a figured that!!!.)..Think carefully.
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