Early 400 used a gasoline head with a dome for LP. Later 400 and all 450 Lp used a special small chamber head and flat top piston.
Tractors built to run on distillate or kerosene used flat top pistons with a large chamber head to lower compression. Now 60 or so years into this and with those two fuels gone from use, most of these old tractors have been rebuilt with some kind of domed piston for increased compression
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Today's Featured Article - Box Plow Blues - by Tom Schwarz. One of the first implements most tractor owners obtain is the box plow. For very little money, this piece of equipment promises to plow and flatten any hill or vale on your ranch road or farm. At least that's what I thought! As simple as a box plow appears, it can be rather challenging to make work correctly. In our sandy soils of Florida, traction is king. You can never have wide enough tires or heavy enough weights to get all the traction you want … unless you own a monster tractor. U
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