1970 John Deere 4020 engine conversion to 466 engine

JD4020_ · May 17, 2022

Hello all, Im currently trying to get all of my ducks in a row to swap a 466 into my 4020D. Ive read and searched all of the threads here for some insight. It seems as though a 6620 or 7720 (non titan 2) combine engine are the easiest to source and best fit. Not real sure on what all else needs to be done to complete the conversion. Oil pan, oil pickup, harmonic balancer, water pump (possibly) and flywheel? I keep reading about the 4 bolt flywheel currently in my 4020 and the 6 bolt flywheel on the 466 engine. Which clutch setup should I use? Would like to set the hp around 150hp and tractor will only be used for mowing, etc. I also read that a 4320 exhaust elbow should be used to utilize the factory exhaust hole through the hood. Anything else I missed or someone that has already completed this swap that I can reach out to would be great! Seems as though Tim S. Has completed SEVERAL of these swaps and is the guru. Thanks in advance!

4520BW · May 17, 2022

Call just johns in Westport IN. He has all tge parts and info you will need.

JD4020_ · May 17, 2022

I tried calling them yesterday after finding a post mentioning them. The phone number I found for Just Johns was (812)591-0579. It said the number was no longer In service when I called it. Maybe I have the wrong place and number because it says its address is
7625 N County Rd 400E
North Vernon, IN 47265
Not Westport, IN like you mentioned. Do you have a good number for them? Thanks in advance!

4520BW · May 18, 2022

The number you have is his fax line. Try his cell at 812-525-1963.

1970 John Deere 4020 engine conversion to 466 engine

JD4020_

New User

4520BW

Well-known Member

JD4020_

New User

4520BW

Well-known Member

Similar threads