Oddly-placed carbs, but seem to work just fine. DOHCs driven by worm gears and shafts. A really unique engine. Unimpressive HP, but tons of torque - ideal for a tank.
They were 7:1 compression to run on 80 octane, but in addition to the torque, they were built to run all day every day at full output. Test engines survived 100 straight hours at full power output which is nothing short of astounding. Many test samples lasted 400 hours or more before failure at full output!
Huge valves 1.9" exhaust valves 2 of em per cylinder intakes well over 2" and 2 as well per cylinder. If it could stand higher rpm would make tons of hp
Ford made an amazing engine. His engineering team originally created a twelve cylinder engine for aircraft use. It was more powerful and lighter than the Allison V12 and given a proper supercharger would have probably been stiff competition for the Packard Merlin used in the Mustang. The Army Air Corps refused to issue a contract, stating they were already heavily invested in the Allison but the Army tank developers said they had a need for a powerful, light, and efficient eight. The GAA was an all aluminum, DOHC 60 deg (Narrower than most.) engine with a flat plane crank, years ahead of its time. Truly a magical design. The tankers lived it because it was very easy to maintain and much lighter than the other three engines then in use in Shermans. It also powered the M46 Pershing. Great engine way ahead of its time.
It sounds like a Detroit two stroke V8 running at half speed which is interesting since this engine has a flat plan crank. While the Detroit has a cross plane crank, the two stroke nature of it makes the banks of the engine fire evenly, and since it has shared crankpins, the 60 degree angle of the block forces the engine overall to fire with an odd interval. Since this engine has a flat plane crank but is four stroke, it also fires evenly in the banks. It also has shared crankpins and the same 60 degree block angle, so it fires in almost the same way as the Detroit, albeit this engine takes double the rotations to fire off ever cylinder. I wonder how the secondary imbalances work out for this kind of setup compared to the typical 90 degree designs used with flat plane V8s. Every other 60 degree V8 out there uses a cross plan crank but needs individual crankpins for each cylinder or have them split to even everything out, and those need a balance shaft to run smoothly.
@@michaelmcclain9702 Yep, it's a real beast. I personally wouldn't be trying to make that swap work, but if someone else wants to take a stab at it then more power to them!
Dual overhead cam , hemi 4V heads
No chains in this engine, very reliable easy to service and that was a big plus in combat.
Oddly-placed carbs, but seem to work just fine. DOHCs driven by worm gears and shafts. A really unique engine. Unimpressive HP, but tons of torque - ideal for a tank.
They had to fit it in a Sherman tank. That's why the carbs are positioned as such.
@@phxmotor1 That makes sense. Thanks for the explanation.
With supercharger they developed over 1,000 HP and in use to day in tractor pulls 1,800 HP.
They were 7:1 compression to run on 80 octane, but in addition to the torque, they were built to run all day every day at full output. Test engines survived 100 straight hours at full power output which is nothing short of astounding. Many test samples lasted 400 hours or more before failure at full output!
@@ohger1How did they typically fail?
Sounds to me like it has a flatplane crank. Is that true?
Yes it is a flatplane crank.
Good question
Yes.
Huge valves 1.9" exhaust valves 2 of em per cylinder intakes well over 2" and 2 as well per cylinder. If it could stand higher rpm would make tons of hp
Ford made an amazing engine. His engineering team originally created a twelve cylinder engine for aircraft use. It was more powerful and lighter than the Allison V12 and given a proper supercharger would have probably been stiff competition for the Packard Merlin used in the Mustang. The Army Air Corps refused to issue a contract, stating they were already heavily invested in the Allison but the Army tank developers said they had a need for a powerful, light, and efficient eight. The GAA was an all aluminum, DOHC 60 deg (Narrower than most.) engine with a flat plane crank, years ahead of its time. Truly a magical design. The tankers lived it because it was very easy to maintain and much lighter than the other three engines then in use in Shermans. It also powered the M46 Pershing. Great engine way ahead of its time.
It sounds like a Detroit two stroke V8 running at half speed which is interesting since this engine has a flat plan crank. While the Detroit has a cross plane crank, the two stroke nature of it makes the banks of the engine fire evenly, and since it has shared crankpins, the 60 degree angle of the block forces the engine overall to fire with an odd interval. Since this engine has a flat plane crank but is four stroke, it also fires evenly in the banks. It also has shared crankpins and the same 60 degree block angle, so it fires in almost the same way as the Detroit, albeit this engine takes double the rotations to fire off ever cylinder. I wonder how the secondary imbalances work out for this kind of setup compared to the typical 90 degree designs used with flat plane V8s. Every other 60 degree V8 out there uses a cross plan crank but needs individual crankpins for each cylinder or have them split to even everything out, and those need a balance shaft to run smoothly.
I just read an article about this 18 liter engine!
It be cool if we had the pog carbs on it...
Awesome 😎
Can I fit it into my hummvee ? 😮
If I ever find a way to put this thang in my Pinto Wagon, , , , ,WOOOO HOOOO !
part of me wishes it had that american muscle v8 sound but i understand why they did what they did lol
It has a flat plane crank which sounds totally different than a cross plane crank found in Ameican V8's.
@ they make less torque but it was probably easier to mass manufacture id assume
Produced over 1000lbs torque a over 500hp at a really low compression and can make that power on 80 octane fuel.
That’s excellent!!!!❤❤❤❤❤❤❤❤❤🎉🎉🎉😊😊😊😊😊
Will that fit into a 73-79 Ford F350 ??
With a little fab work I don't see why not.
@@twotrackjack2260 ALOT of fab work. They are very big!
@@twotrackjack2260 1000lb of American engine right there
@@michaelmcclain9702 Yep, it's a real beast. I personally wouldn't be trying to make that swap work, but if someone else wants to take a stab at it then more power to them!
aint fitting that in your Mustang
Klinkt een beetje beroerd. 😂
Sounds like victory to me...
@@ohger1 Well, I heard these engines in real life so I know how they usually sound. The mufflers spoil the party.