Hi Jimmy Well if its a 318 then it likely has a Carter BBD on it. There also was another Carter BBD on 360 and 400 cu. in. Mopars in the 70's and possibly early 80's but its a different carb. Dodge also used a holley 2 bbl on some 318 and 360 Small blocks. All those carbs I think are aluminum throttle bodies, unlike the iron one on my 85 Subaru. The Lean burn system was used starting about 1977 till mid 80's on lots of mopars, usually there is a big rectangular protrusion on the air cleaner that has a label saying Lean Burn on it it's an early computer.
But being a big heavy truck good chance you don't have that system but a more normal carb. and Dist. w/ vacuum and centrifugal advance in it, even in '82 model yr. In my experience w/ the BBD found on 318's from mid 70's till about your truck's vintage, good news is the Main Jets in this carb are same type found in Carter and Edelbrock AFB's.So you could obtain different jets at many parts stores. They do use metering rods that "hang" into the main jets and hang from arms on a power valve piston activated by manifold vacuum. Earlier BBD's typical in late 60's till mid 70's 318's were different design using tall jets with no replacements except junkyards (good luck there). I need to look at one of my spare BBD's to see how much room is there for the Groove, as I run one on my 74 Dart Sport w/a mildly upgraded Slant six w/ the Super Six package retrofitted- So I will be attempting to Groove this carb as well. If you get far enough into your carb as to want to re-jet and get stuck put up a post and I will try to help out, I have been working on carbs for years. good Luck, Tracy G
