21xx Autolite/Motorcraft carb upgrade
Introduction The 1980 through 1988 AMC cars and trucks with the 258 engine came with the Carter BBD 2v carb. Two versions of this carb were made for six cylinder engines, feedback(computer controlled)and non feedback. The performance of this carb can be described as lackluster at best! The most common upgrade is to the Autolite/Motorcraft 2100 series(incl 2150). We'll cover a step by step upgrade in this section but before we start I'll give a brief comparison between the two carbs including what to look for in your new carb.