crankshaft farmall super c

My Super A is serial number 336977 and the change in block happened just a couple hundred before my tractor was built. That was resolved on this forum just a few months back.

#368711R1 is 240 crankshaft

My experience:
I pulled a 356308 crankshaft out of a B engine block (obviously a transplant, also had a later cyl head on it) and put it in a Super C block (#354898) and am still using that motor today. So the later cranks will go in the earlier motors, and I assume the other way around but can't say definitively based on experience.

Hugh,
The parts books show so many ser # breaks on the Super A's I got a headache ;) ;) But if I surmise correctly reading between the lines..., they went to the new block with larger sleeve openings at ser #310300 (but apparently w/ very thick sleeves to maintain 3" bore), then came out with the SA-1 at #356001 with the thinner sleeves for 3 1/8" bore, taller radiator and water pump...

Vyron,
My extra crank I am 90% sure is the #356308, will have to check tomorrow. It came from a running motor but will need to be cleaned and turned. I would sell it for $50 as is, or through the shop w/o bearings (est $110). I'm taking a 240 crank in this week so could get it done easily. Email me direct if interested, or if I can help further. I am in VA.
Stan(VA).

Your reasoning that cranks will interchange seems solid. I really wasn't wanting to question your opinion as much as wanting to learn more here. Having three of these tractors, it never hurts to know what will interchange, as one just never knows when need may arise.

I have another question now, that being comparison between C-123 and C-135 blocks. From the IT manual it looks as though they are the same block, but that manual does not put a part number on them. Awhile ago Red Rider who posts on here regularly was attempting to change his Farmall 100 to 135 cubic inches. I went through all the specs in manual with him. The C-135 crank is different, having a 4-1/16 stroke. Of course bore is also larger being 3-1/4. I guess my next question is was the block change in early 50's also done with C-135 in mind. I have a Farmall 130 that could use a rebuild on engine almost any time and have also been thinking about this C-135 change over. The C-135 engine does have different cranks depending whether it was used on tractors with IPTO or transmission pto.

I realize I am changing topic a bit here and my apologies to Vyron

So, ... to save me some typing, look for my post in the archives titled 'Various C123 engines' on January 18, 2003. With all that in mind, it's likely that your 130 will need the lower sleeve mating surface (at the o-ring) bored out to 3 7/16" to accept the 3 1/4" overbore piston&sleeve kit (and you'll need a custom thinner o-ring). It will be easier for the guy doing the 100 because it should be ready to accept the larger sleeves as is.

Since the crankpin and the rod journal dimensions are both different I don't know that the C135 crankshaft would be worth the trouble for 1/16" stroke. Also note that I&T spec's two flavors of C135 crankshafts, early and late, each with different dimensions. I am looking into stroking these motors too, by custom grinding different crankshafts; but not far enough along to say much without just speculating at this point. I don't want to dump 'tractor puller' money levels into these motors, so just doing homework, lookin for options.

The other recommendations I've heard is to look at the cylinder head for more power. Your 130 should already have the later head and intake manifold so you should be good there. The guy with the 100 might want to look at that though. Certainly let us know what you end up with!
Stan(VA).

I am definately not going to get a ruling on this for a couple of years and even then not likely until I show up with the plow. As for the typing Stan, join the club. I'm still a one finger maybe 1-1/3 typer. The only way we get better is the same as we did on the tractor many years ago. We may allready be as good as the computer itself. I compare my computers to the first IH model 45 hay baler my dad bought 50 years ago this summer. It tied some of the hay. The computer does some of what it is suposed to do. Then you can also laugh about our grand fathers learning to drive the car at middle age. Same old,same old, it's just us this time.

BTW - your last sentence is an excellent way to bring speculation to light!