We are trying to get our planter tractor finished up and ready to put the duals back on. We rebuilt the engine, (inframe). Had the head worked, and new injectors. Other than just being time according to the clock to do this work, the planter was really kicking its rear end last year pulling hills. I'm not for sure what the whole rig weighs, but probably 45-50,000 lbs loaded. The tractor still didn't seem as quick as any of our fleet of 4440/55s. So we turned the pump up one turn of the screw. It helped, but would like a little more. Does anyone have a close estimate as to where I'm at now. I really want this 46 to feel like a 48 or 49. I talked to the local Deere dealer and they wouldn't run it on a dyno. Evidently the old tractors tend to turn it over. They said to call the Caseih dealer, but no one was willing to bring the dyno to a service call. Looks like it would be easier to haul a dyno than a 20,000 lb tractor. Also I have a question about pump timing. Were these engines know to wear enough in the timing gears to need to check pump timing. We did not remove the pump. Once upon a time we had a couple good fuel shops local. Now it's a 100 miles to a repair shop.