Largest V8s You've Never Heard Of: The LeRoi 844/884 Cubic Inch Gas V8 (in Mack M123/125 10T trucks)
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- เผยแพร่เมื่อ 14 ก.พ. 2024
- Learn more about this rare--and VERY large--series of V8 engines, found in generators, industrial equipment and Mack M123/125 10 ton trucks!
There's no replacement for displacement.
The engine Ford made for the Sherman tank was a flat plane crank, dual overhead cam 1,100ci V-8 in 1940. That was a beast.
I was a truck driver in Vietnam and I remember these well. I drove a deuce and a half, but these would travel in convoy with us. I can tell you that the open exhaust on these fired straight out to the side, and would absolutely blow a Vespa right over! They sounded glorious!
only governments spending tax money can afford to fill these up with gasoline even back then
That is NOT a cross-ram manifold.
As an European and having had an Opel sedan with a 1.0 liter engine, the first time i saw the 455 ci engine of the 73 Oldsmobile 98, wich I owned in 1982 in the US, I thought it was enormous...
Back in the day I had two Cadillac's, a Fleetwood with a 500 and the other a Coupe Deville with the 472. I also had an Old's Delta 88 and Pontiac Grandville with 455's. I also had a Mercury Marquis with a 460. They were all torque monsters and tire roasters and gas hogs too..
Don’t forget about the International 549 V8
The “small engine mechanic” channel had a generator project on that big 884 I believe. A total monster. Funny the name of his channel because he works on some giant old gen sets.
My father was in the national guard sometime between 1956 & 1963. He always loved telling me about the LeRoi 944 V8, I'm guessing he was off on the size. He said it was in a vehicle known as a "tank retriever". I don't know what kind of gearing and transmissions these things had, but they could retrieve a tank supposedly, hence the name(what do I know, Ive never seen one). His favorite part of the story, was telling people it got 2 gallons to the mile. They would reply "you mean 2 miles to the gallon". Dad would say "nope, 2 gallons to the mile"😂 My gosh I keep learning by subscribing to Adam's channel. LeRoi had been part of Westinghouse air brake, and thats where the name "Wabco" comes from (?) Oh man does the name Wabco on the side of something bring back old memories
I appreciate some of these dives into the more obscure.
That intake manifold is a dual plane intake. The intake runners just look more prominent due to the fact that this engine uses stand alone manifold with a separate valley cover, where most V engines incorporate the valley cover into the intake manifold. You can see where each plane of the manifold feeds the two inner cylinders on one bank, and the two outer cylinders on the other. On a cross ram manifold each plane usually feeds one entire bank on one side, while the other plane crosses over to feed the other. I love your videos, and have binge watched almost all of them by now. LOL! Please keep 'em coming!
After Le Roi was bought out by Waukesha, they renamed them RoiLine, and they were produced up until the mid-1970's. They used a lot of the 884's on big standby generators for hospitals and such, usually running them on propane or natural gas.
One unique feature of the M123 was the differential braking lever that allowed the driver to brake the rear wheels on either side individually like a farm tractor in order to make tighter turns. And you really needed that in soft going because the rear tires outnumbered the front tires four to one. I don't know if differential braking was truly unique to the M123 but it was the only truck I've ever driven that had that feature.
Id reccomend looking into the hall scott line of engines they were used in large semis and even applyed to millitary vehicles like the m25 dragon wagon
It looks like that single cylinder engine ran a dual plug setup. Cool video Adam. I love this kind of stuff.
One of my favorite channels on TH-cam. Love hearing about the history. Just recently bought a 1974 Thunderbird with the same 460 you talked about in the beginning!
Up here in Canada the oil companies use 169.6L natural gas engines built by Caterpillar. And also a 8.8L turbocharged propane powered GM based engines what I thought were pretty sool. The heat those giant engines produce is crazy.
-I was just about to mention that looking at a spark plug diagram at a K Mart in the 1980's I saw that there was a listing for a 534 cubic inch engine....But then you covered it.
I had a 78 Eldorado with the 425 and it was plenty powerful. Really smooth engine. I never heard of Le Roi. Thanks for this video.