The 17.5 foot header will be way too much in green stem beans. You have the smallest combine IH made at the time. They where made for a four row head and a 15 foot header.
You engine is running way too slow. That alone will really kill the power. Check the throttle linkage and make sure it is pulling the pump wide open. I have ran into that several times with the manual linkage that wear and get out of adjustment. So even thought you move the throttle to wide open the pump linkage is not against the high idle stop.
The engine should be a D-358. The early ones where rated at 112 HP and the late ones 124 HP. I have been told the turbo and manifolds off a IH 1206 will fit. You would have to ask a IH expert to variety that.
Myself I would not go to the trouble. The machine has other weaknesses that will cause issues if you turn the power up. I would get the engine RPMs up to where they should be and try that before I did any more pump jacking around.
Same-Day Shipping! Most of our stocked parts ship the same day you order (M-F). Expedited shipping available, just call! Most prices for parts and manuals are below our competitors. Compare our super low shipping rates! We have the parts you need to repair your tractor. We are a Company you can trust and have generous return policies! Shop Online Today or call our friendly sales staff toll free (800) 853-2651. [ More Info ]
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
About this site - Yesterday's Tractors is your one-stop source for antique tractors. If you are interested in older tractors you've come to the right place! Join more than 275,000 other classic tractor enthusiasts from all over the globe. We have many resources for antique tractor enthusiasts available including photos, classified ads, more than 24 tractor discussion forums, a show guide, values, specs and much more. Bookmark this site and come back often. Thanks for stopping by! Feel free to use our feedback form to send us your comments, suggestions and ideas.