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Re: JD 4430, 4630, 4440 comparison
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Posted by Jon Hagen on December 29, 2005 at 12:02:53 from (69.26.17.101):
In Reply to: JD 4430, 4630, 4440 comparison posted by IAHay on December 29, 2005 at 11:39:05:
All three are good tractors. The 4440 with the 466 engine has more low rpm torque than the 30 series with the 404 engine. I have a 4450 with 15 spd powershift,this is much better for hitting just the right gear for PTO work. The 8 spd powershift of the earlier machines has quite a speed jump between gears.
The down side of the powershift,is that it makes the tractor into a fuel hog at light loads. I am told that the powershift trans consumes 15 more HP than the manual trans. If your using the tractor under a light load that consumes say 15-20 hp,then the light load + the powershift power drain means the engine must make aprox twice the power it would need with a manual trans,and the fuel guage shows it.
In my case,pulling a 21 ft PT swather with my 466 powered,170 hp,manual trans IH tractor VS using the 466 powershift 4450 at 140HP,was that the JD uses right at twice as much fuel. Your call if the reliability and convenience of the powershift is worth the extra fuel it will use.
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