I dont have old fitting. Its a core from a 1981 something. I have been told its a flare and I have been told its a pipe. I just want to find out if anyone knew for sure which one it was. If I have to take trans back out and disassemble it again ill either drill bigger with hex or face bushing or helicoil. Bushings will be cheaper but helicoil will be stronger.
Checked TCI website and they say TH350 takes 1/8 pipe. And that is way off. 1/4 pipe tap fits. I guess I might as well try it. I wont go to far as I dont want to dump a ton of shavings into trans. I will pack the flutes with ice cold moly lube to trap the shavings.