What 1937-39 GMC trucks were equipped with the Oldsmobile flathead 6 cylinder 230 engine? A recent conversation in
another thread seems to indicate that 1/2 - 1 ton trucks used a Pontiac 223 flathead (at least for 1937-38).
Reason I ask is I came across an NORS water pump made by Warner Machine Products Inc, Part# P-28 (seems to be from around 1950 per documents in the box), that says on the label it fits 1937-39 GMC trucks with "TYPE 230 MOTOR", in addition to fitting 1936-48 Oldsmobile 6 and 8 cylinder engines. Can any of our GMC guru's help with info on what trucks this water pump would fit???