Just for everybody's information, I got this article from Farm Show Magazine
Deere 10, 20, and 30 Series Tractors Repowered With Cummins Diesels
If you have a 10, 20, or 30 series tractor with a worn-out engine, you should consider repowering it with a new Cummins Diesel, says Altura Truck and Tractor, Altura Minn., which runs a repowering service for older 10, 20, and 30 series tractors, including the 3010, 3020, 4000, 4010, 4020, 4320, 4520, 4620, 4030, 4230, 4430 and 4630 tractors.
The company recently exhibited a 3020 at the North American Farm & Power show in Minneapolis Minn. It had been repowered with a Cummins 4-cyl. 4B3.9 diesel engine.
“Converting a tractor with a worn-out gas engine to a diesel is less expensive than buying a new tractor and it improves tractor resale value,” says Merlin Stephan. “The tractor uses less fuel than the original gas engine and is even less noisy. In most cases it results in more horse power and more torque.”
“Most of the time, we don’t modify the frame or hood so you won’t notice much difference in the appearance of your tractor. What you will notice is greatly improved performance. We paint the engine and the front frame. All engines come with a 2-year 2,000 hour warranty. All of the work is done in our shop.
Contact: FARM SHOW Follow up, Altura Truck & Tractor, RR 1, Box 10, Altura Minn. 55910(ph 507-689-4667) or FARM SHOP Followup, Cummins North Central, Inc., 2690 North Cleveland Ave., St. Paul Minn. 55113 (ph 612-636-1000; fax 651-638-2442)