the motor acts as if it has no low end ,it wont even spin the tires, i belive its a carb problem maybe runnin to rich cause it acts like its loadin up ,it has a 270 cam,750 holley carb,edelbrock intake,msd ignition,bored 30 or 40 over,headers,dunno if any of that will help but anybody know what size jets the carb needs if its the problem thanks