Here is what i do on all my H's.... 1st thing I like to clean the carb or rebuild if needed. make sure you got unrestricted fuel flow 5 min minium. When rejeting the carb run it at 1/4 turn more open past it's sweet spot. next i like to put a shorter spring on the govener to increase rpm's to around 2000. Never let it run at 2000 with no load, also even if its under load dont hold it there for extened periods of time. You might need to adjust the limit screw to allow for more rpm's. I do it so i can get a "jump" on hills or other operations thast need just a bit more oomph. Advance timing 5% past the sweet spot. If you go to far you might get pinging. I get 90 octaine gas in my barrel so it hasent been an issue for me. Take the valve cover off and reset the clearence to specs. i belive .20 cold or .18 warm. Also another trick that i like to do is draine the oil and change the filter, fill it up with your fav oil. run it a few hours and drain again and fill it up with 4 quarts oil and one quart duralube. check oil level and fill to top check valve. also check the points plugs plug wires to make sure it is not missing. mabey go to a warmer plug if you have some oil burning going on. by doing these changes I think it adds 2 or 3 hp. most gained by allowing more fuel and increased rpm's and advanced timimg. There are more things you can do if you wann pull the engine down and build it to 350 specs.
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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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