Insulating Against Heat on the Carb

My 73 Fury wagon with a 400 has a Carter carb and runs like **** when it gets hot. Carb is in tune and super hard to start when when warm and vapor locks a lot too. I run a old Eddy intake (forget the number but it's the one with the the Mopar part number cast into it) and tried a few different spacers and didn't help much....car gets hot under that big hood. It's been stored away for a few years now and when it comes back out it's getting a Holley carb. :glasses7: