"big block" GMC I6 engines

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Originally Posted By: dnastrau
Ford made a monster industrial gas V8 called the "Super Duty" from '58-'81 that came in 401, 477 and 534 cubic inches (!)

http://en.wikipedia.org/wiki/Ford_Super_Duty_engine


Here's a 534:

Ford_534.jpg
 
Originally Posted By: 440Magnum
Originally Posted By: flacoman
The 292 was 3/4 of a Chebby 350 . Bore centers and head castings were all designed to be made on the same lines.


You're thinking the 4.3 (262) V6. The 292 was a big STRAIGHT six from the 60s and 70s.

100_0324.jpg

You can tell the 292 from the smaller 250 and 230 by the lifter covers. The 292 uses 6 inch tall ones and the smaler engines use 4 inch tall ones.
 
Originally Posted By: andyd
Back in the late 40s, early 50s pre- CSB, The GMC 270 ci I 6 was the hot set up for drag racers.


And circle track cars as well.
 
Originally Posted By: OVERK1LL
Originally Posted By: dnastrau
Ford made a monster industrial gas V8 called the "Super Duty" from '58-'81 that came in 401, 477 and 534 cubic inches (!)

http://en.wikipedia.org/wiki/Ford_Super_Duty_engine


Here's a 534:

Ford_534.jpg




That is really cool, neat to see!

Only 277HP from nearly 9 litres!...geeze, I'm actually suprised some enterpising hot-rodders, wanting to do somethignradically different, haven't tried turning once of these into some monster hot-rod engine..that would be neat!
 
Originally Posted By: addyguy

That is really cool, neat to see!


I've got a secret fascination with industrial engines. They're a whole different world, and there were lots of really interesting ones back in the day. But as I said, they're a dead breed now. If there's any need for a spark-ignition industrial engine nowdays (usually for LP gas or natural gas operation) it tends to be derived from an existing diesel.

Originally Posted By: addyguy

Only 277HP from nearly 9 litres!...geeze, I'm actually suprised some enterpising hot-rodders, wanting to do somethignradically different, haven't tried turning once of these into some monster hot-rod engine..that would be neat!


Industrial engines can put out 100% rated power 24/7 for years on end. It used to be that you could walk through West Texas farm country pretty much any time of day during growing season and hear several gasoline (or natural gas) irrigation engines humming away- day and night, all season long. Try that with a 380-HP rated modern automotive v6 and see how long it holds together
grin2.gif


The reason the really big industrial engines don't wind up in hotrods very often (things like the Blastolene monsters notwithstanding) is that they're SO heavy. Yeah, with a lot of machine work, custom pistons, etc. you could probably get the horsepower up to 700 or so, but the engine would still weigh close to half a ton.

And even if it was a lighter block more related to car engines (like a Ford 370 or Mopar 413-3) pretty much nothing about it would work with the usual car transmission, accessories, etc. Back when I was much more active on the Mopar forums, about 3 times a year someone would pop up having "discovered" a "really cool old engine" in a motorhome or old Dodge tandem dump truck that "looked a lot like a 440 only different," and want to use it in a muscle car. A few questions would confirm that it was a 413-3, and someone would run down the long litany of parts that were just flat incompatible with a car chassis... which was pretty much everything but the bare block and the connecting rods (and even they were too heavy to spin much past 5000 RPM). Crank flange- made for an Allison, not a Torqueflite. Heads- external plumbing for water cooling. Water pump and timing case- too tall to fit under any car hood. Camshaft- nothing but torque below 3600 RPM, nothing at all above. Pistons- not enough compression for high power. Valves- really cool sodium filled stems, but too small to breathe at high RPM. Etc.
 
Originally Posted By: dnastrau
Ford made a monster industrial gas V8 called the "Super Duty" from '58-'81 that came in 401, 477 and 534 cubic inches (!)

http://en.wikipedia.org/wiki/Ford_Super_Duty_engine


Interesting- International Harvester also had a 477 and 534 CID industrial V8s (and also a 549, IIRC). And in fact, Dodge purchased the IH 477 and 549 and sold them as the "Power Giant" v8s in the gasoline-powered D800 tractors where something bigger than the 413-3 was needed.

I wonder if the Fords you mention are actually sourced from IH? One coincidentally identical displacement I could believe. But TWO identical ones make me suspicious that they're the same engine family.

Hmm... some googling is inconclusive. I found an off-hand post on a bulletin board (the IH "Binder forum") which said that both the Ford and IH engines were "originally designed by the same company" back in the 50s, but that's the only reference to such an arrangement I've ever seen so I question it.

The picture of the Ford 534 in a later post sure looks a lot like an IH engine (valve cover shape, head bolt arrangement), but it could be coincidental. If it were a view from the other side, it could be a bit more conclusive- IIRC the big IH engines had the distributor angled out of the right (engine's right) front timing case a lot like a big-block Chrysler.

Further trivia- the big IHC gasoline v8s were the only non-Chrysler engines to ever use a Carter Thermoquad as the factory carburetor in the late 70s.
 
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