RAH

Atlas tractor could sell you whatever you would want for constant mesh gears.

That definitely makes for a bad day. On the bright side, an M would never let you down like that.

Be sure you have correct head gasket. Oil passage is different from an early one to a late one. My guess is there is no oil getting to top.

If the truck one has the coolant filter as part of the cooler, the frame is in the way of the filter. I don’t remember if it is just a little or a bunch. Hope this helps.

Google “Smith Brothers”. They make whatever you would like for pushrods and are very economical.

I’ve always seen them as a foot switch on the floor

Yes have done that. It works well

86,100 sold is what I see

Ed, we have had that happen in our “big” M engine before. That block would have been a 400 or 450 block. Was ripping the center main right out of block. Had not heard that from stock engines before, but very interesting information!

806 is completely different engine. If you cannot get another ag 360, I would use a truck 360.

To put it simply, power differences between them was mostly all done by different pumps and different pump settings.

There are 3 different 400 series heads. High swirl, moderate, and low. Valves are no different.

First question, if changing to same pump you would need nothing. If going from an A pump to MW pump, will need plate pump mounts to and the pump hub that the gear attaches to. List is same for going from MW to A also. Question 2 is a loaded question. Only you can answer that one.

Pump shop can change entire governor assembly on your truck pump if you wanted, but I don’t know the cost. I know a P7100 ag governor runs 500$

Completely different governor housing and everything.