Engine interchange

[Randy Lee bullock]

My 640 jubilee has a busted block Will a 601 motor fit that tractor?

 

[EdGooding]

Yes, pretty much the same engine with a differently jetted carb that gives a little more power but also uses more gas. Has the same engine as your Jube, too.

 

[John0829]

Same basic block configuration was used from the 53' Jub/NAA up through the 64' 4 cylinder 2000 and 4000 models. They were also used in many industrial applications.