340 has a hard time starting when hot?

Sorry, car is at my fathers, but I will take a look this week

Ok, that would help, thanks. IF IT IS "some kinda" AFB, AVS, or Edelbrock variant and it does not have the THICK insulator gasket under it, it needs one badly. I would recommend the Edelbrock 9265, or 9266, depending on what style intake it has. The 9255 is an open hole gasket and the 9266 is the divided plenum gasket. So whichever intake you have, there is a gasket for it. DO NOT substitute for these gaskets. They are very thick (over 1/4") and other gaskets fall short. "This could" solve your problem.