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504 w Chevrolet 4.3 diesal

D

Dean Olson

Well-known Member
I saw this tractor and went and looked at it. Runs good drives good. Pretty clean conversion. Gentleman had used it for years in his hay operation. He's selling because he bought a cab tractor with ac due to health issues.

What do you know about that particular Chevrolet 4.3 diesal?
a34399.jpg
 
It wouldn't be a Chevrolet Division product. It's from the Oldsmobile Division, although it could have came out of a Chevy. Pre-1980s each GM division had its own engine design--then it got real confusing in the 70s with every line having a 350 and GM deciding to put a variety of division engines any given car.

do a google search for olds diesels and you'll find a few informative sites and clubs etc.

karl f
 
My Mom had one in a 1982 Olds Cutlass, it didn"t have a lot of power for a midsized car, but it was fine and I"m sure would be MORE than enough for a tractor. I kept in contact with the guy who eventually bought it and he was over 200,000 miles without a single engine problem. We did have a number of transmission problems, but that wouldn"t be an issue here. I beleive it is basically a 350 chevy block with 2 cylinders cut off, it would work out to 231 cubic inches. Had a friend who had a V8 disel in a 1980"s Olds Cutlas, I think it was 350 cubes, much more power, very dependable.
 
I had one of those in a 1981 Buick Regal. Great mileage but absolutely no power at all. Being a V6 with less power I think they actually did better (in terms of not self destructing) than the 350 diesel.
 
dhermesc:
you can have less power than no power?
from the old jokes about the 350 diesel...
karl f
ps my favorite 350 diesel oddity memory is the guy at church that had a caddillac with it. it would have been sometime before 1985, as I wasn't in kindergarten yet. Then about 8 years ago, I had forgotten about that and heard a diesel approaching in a parking lot and the only car coming was a caddillac, I remembered the church man after it passed by. Now, I think it would be cool to have a caddy diesel.
 
in the80's G-M tried to pull a fast one, they were putting 350 chev motors in olds, people called them chevmobile, the 350 diesel motor was a olds, put in caddys also, gutless, no-turbo, my 18 wheeler passed them up hill. olds put the 350 rocket back in olds. then racers found out, they can convert the diesel back over to gas and has a high compression race car. the 4.3 diesel was in the mid-size cars. didn't go over well either. people weren't ready yet for them.
 
The 350 V8 had a dynamic balance problem at about the same low RPM that the torque converter lockup kicked in. You accelerated through that RPM level every time you left a stop sign/light.
The 231 V6 did not have that problem.
 
I had the injection pump on mine rebuilt by the local diesel shop after the factory warranty ran out. I had lots of power after that, and no loss of mileage.
 
The Olds 350 diesel was actually a completely different engine from the gas 350. All the gas and diesel shared in common was bore and stroke. Olds chose 350 because it was a popular displacement at the time.

There's no way a gas 350 would last near as long as a diesel as even the Olds 350 did.
 
"The Olds 350 diesel was actually a completely different engine from the gas 350. All the gas and diesel shared in common was bore and stroke."

While that is TRUE, the olds 350 diesel block is simply a beefed-up gas 350 block with provisions for an IP drive.

It is SO similar to the gasser version that hot-rodders have used the diesel blocks and cranks with gas pistons and cylinder heads to make a TOUGH gas engine.
 
(quoted from post at 05:07:49 03/15/11) The Olds 350 diesel was actually a completely different engine from the gas 350. All the gas and diesel shared in common was bore and stroke. Olds chose 350 because it was a popular displacement at the time.

There's no way a gas 350 would last near as long as a diesel as even the Olds 350 did.
Click to expand...

Isn't this from the era of "gas conversion diesels"? I wasn't old enough to remember well, but I had a Delta 88 that was a gas convert from a diesel engine. The diesel failed and they put some gas engine in it. Try to get parts at the Autozone for that one. They would get all ------ bc you would give them the engine instead of the car. Finally I just found out a car that it could have came from and made up the rest of the stuff :)
 
I would like to see better pictures if available. Also I would like to know how the 4.3L diesel bolted up to the IH 504 transmission. If my D188 ever went out, this could be an option. Heck, I'd maybe even buy a 504 gas just to do an engine transplant. It looks COOL!

CT
 
Didn"t New Idea put 4.3 diesels GM in some of the Uni pickers, I want to say like models 704 or 705, they are the ones that started on fire a lot I think, because of the exhaust on both sides filling up with fodder.
 
I found the specs. 4.3 L Oldsmobile Diesel 85HP @ 3600RPM and 165ft.lbs @ 1600RPM. The 504 already has a fast road gear. The OEM tire size was 12.4-38 and it would do 22 MPH @ 3000 RPM (tach face), I know that my 504 with 14.9-38 tires will hit over 30 mph (above rated engine speed, about 3000 rpm, verified). I can only imagine what the GM diesel would do in road gear!

How much were they asking for it? I believe it could be a Category 1 powerhouse being peak torque is at 1600 RPM, PTO speed is at about 2000 RPM! I would not use it in a tractor pull though, the trans/rear end may explode!

WOW,

CT
 
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