I bought a TCI SSF 700R4 with a High Stall TC, I believe it has lock-up abilities.
Put this into a '76 GMC 1/2 ton pick up 6200 lbs, it is mated to a ZZ4 350 supposedly 355 HP or 410 foot pounds of torque along with 4.10 rear.

Should I be able to stamp on the gas and the rear wheels should be smoking right?

What is going on with the TC, I have a brake light that keeps coming on and going off depending on how I press the brakes while I am driving, somehow I think the TC is connected to the Brake peddle, does that make sense?

The TV Cable is ment for Kick-Down only and not Shift Points, and yet when I push the gas down, the 4 Barrels are supposed to open right? The tranny should shift to 3rd the engine sputters slightly, and shudders, like the TC is Kicking in and out of Lock-Up, the Vacuum at idle is around 15-16. The brake booster has a vac hose connected to the Manifold as well.
The reason I mention the vacuum is that I am wondering what roll it is playing in all this.

Regardless, My Tranny leaked from day one, the shifts were hard, very hard, not just firm, but violent. Had tranny repaired after it failed after 2500 Miles, had it reinstalled, and still having issues, now leaking again, not even 1000 miles on it.

Brand new Engine Brand New Tranny Torque Converter and Rear.