Been busy with other things the last few months but back trying to positively identify this engine, hoping to ascertain size and year.
I can’t find the cast number listed anywhere - 839253.

I’m fairly sure the serial number starting TR makes it Canadian built, destined for a right hand drive vehicle and the following digits starting with 4 places it as 44 built - anyone able to confirm this?

A few external observations:
Rocker cover secured with 2 nuts on top
Side cover extends over spark plugs
Carter W1 589S carb (I know 216 runs carter, does 235 also or Rochester?)
Low pressure engine (no external oil filter)

My thoughts so far are 216 or pre 54 235, can anyone suggest other things to investigate without tearing into it too much?

Many thanks,
Dave