Allis 220 injection pump for pulling

I have an Allis 220 i’m trying to make into a puller for an out of field class. Should I stick with the stanadyne or upgrade injection pumps? What other injection pumps would work somewhat easily? Thanks for the help.

The injection pump you should use should equal your best competition, wouldn't you think ??   So, as an easy example, a 1066/1466 will easily make 250 HP just by turning up the pump in-chassis. An 8050 A-C will do the same. A 220 will not, without $$$$$$ being spent on the existing pump and injectors, and then you may not be able to farm with it, if needed. What are the "rules" for where you want to compete ?? A speed limit ?? or run-what-you-brung ??

out of field classes will likely require stock appearing fuel system. Real farm classes do need speed limits or else you end up with some guys running 25mph in a farm class. Out of field should be about 8mph. I really like 12 mph for farm pulling, but the 210 too hot runs 24-25 mph also a fun ride. lol!

I’m pulling in the out of field 8 and 12 mph class. The rules say “stock appearing” but screw the rules! I’ll paint everything orange and say it’s pretty well stock. If they don’t let me pull oh well�£No one really inspects the hell out of your tractor unless its something completely ridiculous. I’m thinking about just getting the roosa master built with 450 heads, but I have a p7100 laying around in the shop. How hard would that be to swap onto the tractor? I pretty well want as much HP as the rest of the tractor will handle. (Planning on putting a clutch in this winter) Would a 7000 or 8000 series engine bolt up? I’m trying not to get my ass whopped next year.

The only farm tractor that ever had a "P" pump OEM from the factory was a 6030 Deere. So, how many of those are there to pull against ??

A P7100 would be a lot of work to get mounted, and will guarantee you get kicked out of any "out of field" classes. Just because you have it doesn't mean it would be a good pump for it either. Most likely it's off a truck, and they have the wrong style gov. The Roosa 450 heads are on backorder still. P pumps were used on 4840's, 4850's as well. A stock P pump still would need to be built up to make it usable for a puller. Just because it's big doesn't mean it pumps a lot of fuel in stock form, but they have huge potential. Most lower performance classes will not allow p pumps because of this potential. The ones you think are P3000's may be MW pumps. Many, many people make that mistake. Your P7100 may not even be what you think it is. Good luck with the project! There's a lot of time spent in these projects, which is why I'm no longer doing them.