my notes only say: "block casting 5843350 is found in Canadian full pressure 235 53 (low side cover)”
that 5843350 block as far as i know was for canadian 1953 model year at least probably for 54 as well and a dealer option replacement engine for previous years, it was the first 235 full pressure with insert bearings
i’m sure i’ve see it in the 1954 trucks as well but do not have examples to prove that at the moment, just from what i saw at the junk yards, the 54 still has the high water pump location.
many older trucks (52 and older) got that canadian block when they needed a new replacement engine, so they got an upgrade while replacing the blown out engine
i have 2 examples of that block serial matching the door tag (below) so it’s confirmed example for 1 GMC and 1 Chevy in my collection.
(in Canada, the door tag has both a vehicle serial, and the engine serial number - from next to the distributor -, so you can confirm if the engine is matching to the truck)
1953 "rusted truck" - 1434 1 Ton
serial: 3143407950
engine: XC670790
body serial: 562 trim: 394 paint: 339 GVWR 8800 LBS
block: 5843350 head: 3701887
1953 "GMC truck" - 9430 1 Ton
serial: 3943304301
engine: XC665877
body serial: 217 trim: 394 paint: 339 GVWR 8800 LBS
block: 5843350 head: 3701887
