2004r won't go new thread

[Footjoy]

I have a new build just completed SBC with 2004r and 2500 stall all new. When I put it in gear forward or reverse with my foot on the brake it jumps and dies like it is engaged. I put it on jack stands and put it in gear and wheels go what ever direction I select, if I put my foot on the brake it dies.. Just to check I took one of the coolant lines off and it is pumping fluid strong. It is a non lockup trans and TC.

Questions



What if I didn't get the Torque converter (TC) seated when I put it in?

Could the TC stator be fried inside?

Is it not getting fluid to the TC?

Thanks