the 8630 engine used a camshaft driven oil pump. it was their downfall. I think a few 8640's were built with the early engine but I believe most would have been updated when the 8630's were. check the engine serial #'s and parts but I don't think there will be any difference between an 8650 or 8640 engine
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Today's Featured Article - Show Coverage: Central Illinois Strawberry Festival - by Cindy Ladage and Janna Seiz. Every year the coming of summer is highlighted by different events for different people. For some, it is heralded with the end of school, tilling the garden, or completion of the planting season. To us, connoisseurs of find food, antique tractors, farm toys, crafts, and downright fun, the annual Strawberry Festival means summer is here. Every year, in Carlinville, Illinois, the Macoupin County Historical Society and the Macoupin Agricultural Antique Association team up to fill th
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