[51 MERC-CT]

Was also into stock car racing as a crew member in the 50's.
The car owner was in charge of the engine rebuild facility at our local Ford dealership.
In his position he was able to cull out engines that came in for use in the stock car.
The engines he selected were 59 series blocks from the Windsor Ont. Canada plant.
These blocks would allow bigger bores and yes all our engines carried a 3.437 bore.
Don't recall if the blocks had a 'W' on them but they did come from Canada and thus the 'W' reference.