[bostru]

Problem solved .Obtained another carb with the larger throttle body and swapped the metering body and truck performs as it should .Makes sense that the carbs that had the smaller throttle body were for smaller displacement engines and their metering bodies are calibrated accordingly. Also machined some material off the back side of the four bolt 'bosses' on the float bowl cover to give the gasket little more crush ,no more leak ! Thanks for all the input on this