I think I remember the Chevy 292 but this was a Ford with a V-8. I am going on memory and it might have been a 56 and it could have been a 312 but I think it was a 292.
Whoops, that’s right, the truck you’re talking about is a Ford. I don’t know the Ford engines as well. I know Chevy from that era because I briefly owned a 1951 half ton in the mid ‘90s.
I just googled it and there was a 292 Ford V8 at that time, so that’s probably it.
And I was mistaken about the Chevy 292 six cylinder. It actually wasn’t introduced until 1962. Before that it was the 261 that was the bigger six.