I am making a Super A hybrid using a lot of 140 parts. The 140 block is different. The crankshaft is different. The sleeves are different.
What I can tell about the 140 block is that it has mounting holes for a water pump and fan assembly that the Super A blocks don't have. The rockshaft lift arms look identical except that the rockshaft arm on the 140 that had a helper spring had a larger diameter hole to accommodate the helper spring than the Super A had. The thread diameter for some of the mounting brackets on the side of the bellhousing and transmission is larger on the 140 than Super A.
The crank pulley on a 140 is different than a Super A. The crank is different from a 140 and a Super A. A 140 crank can be used for a Super A, but a Super A crank cannot be used for a 140. The 140 crank is threaded, if you cut the threaded part off it can be used for a Super A pulley. I have been scolded for doing that to the crank, but it worked. The cam is identical. The 140 fuel tank will mount on a Super A, but is taller.
This post was edited by GRAPE-DRANK at 15:19:45 09/28/11 2 times.
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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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