Originally Posted by motor_oil_madman
Anyone ever heard of this on carbureted engines?
Yes, absolutely.
Several decades ago, when I lived in Phoenix, I had vapor lock issues with a 70 Pontiac during the summer months. I split a rubber fuel line and slipped it over the hard line from the pump to carb and had no more issues. Todays gas is worse. My 66 (signature) would boil the gas whenever outside temps were in the 90s until I made some insulators to install under the carbs.