HardlyWorthit
Back in the 50s, Chevy 6 inline 235 ci came factory with single exhaust. A popular modification was to install a split manifold, Y pipe dual exhaust and tail pipes. If you wanted to splurge, you could swap out the 235 for a GMC 302 with a racing camshaft and dual one barrels. I would guess that the rod in the pic has cleaned off the emblems and chrome and it wouldn’t surprise me that it has a crate engine, 4 speed trans, suspension and rear end upgrades.
55 chevies had front motor mounts. In mid ’57 Chevy went to side mounts to minimize breaking motor mounts from high torque. A popular cheat for ’55s was to find an early ’57 283 block and build it for a drop in fit to a 55-56 body, and claim it was a 265. More educated guys would look at the serial number and the casting right below the number to ID the real engine.
In that time period, 6 cylinder 302 Jimmies in Chevy stocker dirt trackers ran against Hudsons with 309 ci sixes. Those Hudsons were built low to the ground and did well on dirt.
“Buzzin’ half dozen” is still a thing! 🙂