Brett: I agree some of the advice you got was not very well expressed. I'll go through the whole thing for you.
Serial Number 3750 is a 1959 model and that number should have come from a tag on left side of clutch housing. You can search this yourself, under Research & Info at the left of this page click on Serial Numbers let your computer do it's thing, then click on International and Farmall again let the computer go to next and click on I-140 and F-140. That will produce a page with beginning serial numbers for each year the 140 was in production.
Then we have the letter J, nothing to do with serial number. It indicates the tractor was equipped with a Rockford clutch from the factory.
Then we have the post 1963 grill, you are truly a blessed man. The 1958-1963 grills were junk, always loose with a vibration. That same style grill was on first 140 and all 240, 340, 460, 560 and 660. By the time most of them were 10 years old, haywire was the fastener of choice. Believe me I know, I listened to a 560 grill vibrate for 11,000 hours. Should have sued IH for mental cruelty. Keep the grill you have.
Your block part number is 367825, all the R, R1, R2 or R3 do is indicate the casting run. I don't think there was ever R alone. Over the years I've looked at thousands of IH part numbers between 1953 and 1970, if it ended in R a number always followed. Check the block closely, someone may have done a grinding job. If you find no number following the R, don't worry about it, nothing will change.
On the item of ring count per piston. Over the years manufacturers probably made half dozen different piston-sleeve kits for that block. IH alone probably made 3. There is a chance some of them were 3 ring pistons and some were 4 ring pistons. Of that half dozen kits, probably only 2-3 of them exist today. This is all about volume and these tractors haven't been built for close to 30 years, and they are being used less every year.
Now, Will you kindly settle in and rebuild this tractor, we can't wait to see the finished product.
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Today's Featured Article - The Cletrac General GG and the BF Avery A - A Bit of History - by Mike Ballash. This article is a summary of what I have gathered up from various sources on the Gletrac General GG and the B. F. Avery model A tractors. I am quite sure that most of it is accurate. The General GG was made by the Cleveland Tractor Company (Cletrac) of Cleveland, Ohio. Originally the company was called the Cleveland Motor Plow Company which began in 1912, then the Cleveland Tractor Company (1917) and finally Cletrac.
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