67 barracuda 273 Commando
We've all been spoiled by fuel injection! Hot restarts with an aluminum carb require a little more cranking. Modern E-10 gas makes this worse. Your factory owners manual may have even recommended 1/2 throttle for warm restarts. If it didn't I would certainly suggest doing so.
I've had good luck using these (2 if there's room)
http://www.summitracing.com/parts/mrg-97/overview/