350 and late DC rpm?

Mopower

Well-known Member
It seems the Nebraska tests didn't include the model 350. I was told the engine was larger in the 350 (164cu.in.?). Was there a 350 diesel too? The 300 is rated 1750rpm (load). What is the rpm (load) in the 350? Was there a 350 diesel?

Also, did a late DC have more cubes or rpm? If so what?

Thanks to anyone that can help.
 
In 1952 Case increased the d series bore from 3 7/8 to 4 inch increasing th displacement from 260 to 276. M&W and other aftermarket pistons were 4 1/16 which was 283 ci. rpm's remained the same
 
Doug, just sitting here thinking. The CID increase in 1952 on the DC and SC, what about the LA and VAC, did they increase too? I had known the SC changed in 52 or 53, didn't realize the DC did too and that got me to wondering about the other two models.

Jim
 
LA displacement remained the same at 403 Cu.In. with 4 5/8 inch bore. After market kits were available for 4 3/4 and 4 7/8 inch. Have 4 7/8 pistons in my LA for 448 Cu.In. Stock bore was unchanged from L to LA. LA did offer a high compression piston in later models, if you believe 5.7 to 1 compression was high. My LA with LP head is about 8.0 to 1 compression and you do not hand crank it.

VAC did not increase bore either.

Gene
 
Thanks Gene and you mentioned something that had never really crossed my mind and that is hand cranking and why later model tractors did not offer that option.

Higher compression engines eliminated hand cranking. I remember hand cranking our 1 ton Model T truck and I know it was pretty low compression just had never put 2 and 2 together until just now as to why mid 50s on did not have hand crank capabilities and I knew that diesels could not be hand cranked due to high compression and just didn't think about gasoline engines as they got bigger with higher compression and more horsepower. I always try to learn something new every day and this is my new bit of knowledge!

Jim
 
I am sure that reliable sterters and batteries had a big part in the demise of hand cranks. Safety is another thing. I have a scar on my left forearm from trying to crank the LA. I finally broke down and had my stock generator rebuilt to 12 volt and a 12 volt battery. Burnt up 1 starter and 2 starter switches trying to start it on 6 volt. Even group 4 battery and 4-0 battery cables barely started it. Cranks over very good now.

Gene
 
yes Case upped the original 3 1/2 bore and 154ci to 3 5/8 and 165ci, aftermarket went to 3 11/16 which was 172 cubes, neighbor put 3 11/16 in an sc along with Ford 260 valves and a head port job, said it would really pull but wasn't cheap in gas anymore, Mopower did you ever get that JT with the 445 engine going? I always thought that would make a neat unstyled puller.
 
I vividly remember watching Dad cranking himself silly on the LA after it had set all winter. After it statred and had run a while it would restart with little cranking. We used ours for spring plowing and other assorted chores off and on that took big HP. Dad wouldn't spring for a battery to use just 3 or 4 times a year. He also used 8V batteries in all of our 6V systems for that little extra kick (tweaked VR to about 9V output). Just had to replace light bulbs more often.
 
My 58 900B deisel has a compression release lever. Sure helps if you have a little weak battery.
 

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