There is an adjustment on the governor that can get you up to 540 RPM. I believe it was there to adjust the belt speed when using a thresher. Don't quote me on this, but I think if you were to turn it clockwise, it will increase the RPM. As far as more HP, you are kinda stuck with the stock setup. There are a few things you can do, like use a Heisler gasoline intake and cylinder head. Good luck finding a head. I have one, but the machine shop said it is now junk with a hole rusted through a chamber. If you have deep pockets, or are friendly with a machine shop, you can increase the bore to 4.00". shaving the head will help also. MSD ignition is probably not practical. Make sure your mag is hot and tight, and timed right. Smaller tires will also help in the pulls.
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Today's Featured Article - The Fordson F Ignition System - by Anthony West. A fellow restorer contacted me earlier this year asking for some help and advice on a model F that he was restoring. He had over a period of months spent a fair amount of his hard earned cash on replacement parts for the old "trembler" ignition. Sadly though all his efforts seemed to be a waste of time and money as he still couldn''t get the temperamental old thing to run correctly!! If i said that this was a little frustrating for him that would be "conservative" in fact the problem had reduce
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