Overheating issues with remanufactured 360

So my dad called and talked to summit to order some parts and he talked to a 60 something year old drag racer who asked about our manifold, cam and carb and he did the math and said we need 2 750 double pumper to even start giving the cam and manifold the juice they need. We only have 1 750 dp. We are going to get a new manifold and a milder cam and go from there.

Appreciate all the input, were going to start with the innards and if that doesn't help we'll troubleshoot with everyone's suggestions. Thanks guys.