The truck in the picture appears to be about a 1950 model. 235 was Chev's biggest offering for that year. The 261 did not appear until 1954. A 235 would pull a single axle trailer...just not very fast. That's why drivers drove day and night to get somewhere and many of them bounced pills off the windshield to stay awake.
Thanks. Would that be a high pressure engine or the old babbit type?