I have an 81 brat with ea81 engine only upgrade is the weber carb and for some strange reason when i spend a couple miles pushing it like shifting around 4 5 thousand rpms and gunning it....mainly when im going off road...i'll notice it running hotter then normal and when i go to check the coolant level the raiditor (yes i know i can't spell) well be dry as a bone yet there are no leaks anywhere in the block or hoses...only thing i can think of is im burning it but why would it only be in the higher revs?

If your burning that much coolant the smoke/smell should be pretty noticeable. Are sure it was filled properly? What does the oil look like?

check the intake gaskets as there is a coolant passage there that can fail and use coolant in the cylinders.

The oil looks fine no signs of coolant in it and i'm very sure it's being filled properly and there's no smoke or smell to tell you of..The only tall tail sign that there's no coolant is my car runs hotter