Everything (or much of) what I've read about the Chevy 235 engine over the years tells me that the manufacturer did not install them in trucks for year 1953. Many listings I see for parts, service, manuals, etc., continue to place the old babbit pounding 216 in this truck. However, I have a 1953 3100 of which I am the second owner, the first being my Great Grandfather, and it most certainly has the 235 engine indeed - not the 216. I have the original title, and I've run the engine number. It's definitely a 235. My question...is this the same 235 that was being installed in cars at the time? Was the 235 an option for the half ton pickups in early 1953 ?? Thanks in advance for accurate information.