Actually there were several different versions of the 404 engine and the ones with the small pump work out better in a 4020 because of the better low end power they offer,, the 7020 has the big pump and and was strong when run at higher RPM's but doggy on low RPM's the best up grade engine for a 4020 is a 4240 engine then turbo that..466cid and great low end power plus it will fit in nice and clean..and this engine was in 6620 combines so they are readily available..in the $3500 range..
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Today's Featured Article - An Old-Time Tractor Demonstration - by Kim Pratt. Sam was born in rural Kansas in 1926. His dad was a hard-working farmer and the children worked hard everyday to help ends meet. In the rural area he grew up in, the highlight of the week was Saturday when many people took a break from their work to go to town. It was on one such Saturday in the early 1940's when Sam was 16 years old that he ended up in Dennison, Kansas to watch a demonstration of a new tractor being put on by a local dealer. It was an Allis-Chalmers tractor dealership,
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