Starting issues after reaching operating temperature

[Bubba Aaron]

I have a 68 c10 with a 400 sbc. It's runs 11:1 compression with Keith black pistons. It has a edelbrock performer rpm top end. 850 speed demon carb and a complete MSD 6AL ignition. I run a electric water pump and fan and just recently had a 18 circuit wiring harness installed. As well as a new hi torque mini starter. My issue is after I start my pickup and it get to operating teperature and turn it off it won't start untill it cools. It does this untill my battery drains. I just had my alternator checked and it passed. I was told not to ground my battery to my aluminum heads so I moved the ground to the frame and i still have the same issue? Thx for any advice anyone can give.
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