Weird engine coding

[doogan]

Found a running engine with numbers I can't identify.   First it is in a 51 ( I was told)  chassis, block is 23 inches and water pump is the one without the short rubber hose over to thermostat housing.  Number stamped on the normal location is only TP23 and nothing else.  At the bottom of block on left side is 59   8   12.    To the left of that is 148 then area looks like it is rubbed out then 44.  Engine smokes so to rebuild I am not sure if this is 218 or 230.  Is there another way to verify what it is?

Edited December 24, 2017 by doogan
spelling error

[Plymouthy Adams]

1960 truck 230

[mechresto]

Tp23 is dodge 23" 230ci from 1960

[doogan]

Thanks guys now I can get to rebuilding.