Ok after getting the engine to run smooth now i think the trans is acting up ok it will run fine at slow take off but if i press on the gas when it goes to shift into second under load it will sputter and miss untill i let off the gas then it smooths out and runs fine

gah if its not one thing its another..
its a SBC 350 mild build with hei, edelbrock intake, holley 650 carb, headers, dumps and small cam but have no idea the specs with a mild built th350 with a shiftkit and a 2800 stall