Gets hot and stalls out

I have a 67 Barracuda with a 408 and iron heads, which means it likes to get hot. This past weekend I took the car out for a quick spin to test a new alternator (Powermaster 95 amp). I pulled into a parking lot and hit stop-and-go traffic; the car got to 210 but held there (weather: 85 degrees and overcast). I shut it down for about 5 - 7 minutes while I ran a quick errand. When I got back and hit the key, it was over 210 but that was to be expected. I started it and pulled out of my space...and it stalled. Tried starting it several times and it would catch and then immediately die again the first couple of times, and then after that it wouldn't catch at all but you could smell the fuel. Ended up having to push it back down the parking lot aisle to get out of the way. It's not unusual for it to take a minute to start after it's been sitting and the temp climbs, but this is the first time it stalled out on me. After about two hours it started up again - and of course had cooled down significantly. It has an MSD 6AL and Blaster 2 coil, MSD plug wires, Holley 750 cfm carb. It does have a hood liner that I've been thinking about removing to try and get the engine bay temps down. It could just be a fluke this time but I'd prefer to not have to push it again if I can help it, so looking for any "preventative medicine" and/or suggestions as to why it happened this time. Many thanks!