<VV> Vapor Lock?

[JCB]

The Car: 1962 Conv. 80 hp
 
The Good:  Starts easy, runs good.
 
The Bad:  After about 20 to 30 minutes dies and will not restart; until
about an hour later when it cools off.
 
The Fix: ?
 
What's Been Done:  Rebuild kits in carbs, rerouted fuel lines away from heat
of motor, added elect fuel pump, new mechanical fuel pump, new distributor,
coil, etc..., reworked valves etc..., new transmission, clutch, seals, and
on and on...
 
Thank you for any help.
 
 
Jon Bruton