My old 1984 454 crew cab with 4 10 gears did around 3000 at driving speeds so a 3000 stall will be slipping a lot on the street-----why have a big motor if your just goin to slip/slide the trans???? hook it up and use the torque of the engine, not the torque converter of the trans--------


and use modeling clay strips on the piston to check the clearance as you need to measure the radial clearance around the notch as well as the vertical-------


Isky has a good simple set up to notch pisstons in an assembled engine-