OK- first, the lean burn computer requires a constant manifold vacuum source. This may be the tap on the carb that it is plugged into. You need to get a vacuum gauge to check. The lean burn computer reads vacuum backwards from how a distributor does. The lean burn needs to be supplied the constant vacuum source from the intake, not a ported source like a distributor vacuum advance.
A 1982 one barrel slant six will have either a non-computer controlled holley 1945 carb or a computer controlled Holley 6145. Either way, put the lean burn hose to the ESA port in these diagrams:
1945-
6145-
Second- you need to get a length of hose, attach it to the vacuum transducer on the computer, and suck on it to see if it holds a vacuum. Ideally you would use a hand-held vacuum pump to check this.
Third- Slant sixes used two types of distributor hold-down brackets. The more common kind (used from 60 to roughly 78 ) had a bracket with a slot for the hold down bolt and a slot on the bottom of the distributor, like this:
The other used a ring bolted to the bottom of the distributor and a clamp on the block. Either you do have the slot on the bracket on the bottom of the distributor bottom where you can loosen the bolt on the bottom to get some more play in the adjustment, or you have the clamp on the block that will give you about 300 degrees of play (take out 60 for the vacuum advance pod). If you have the slotted bracket (the kind in the picture above) and you don't have enough adjustment play to get the timing within spec, first check for vibration dampener slip and second you will need to jump a tooth on the distributor gear. This involves pulling the distributor and either advancing or retarding the rotor a tiny bit to engage the next gear on the distributor drive gear.
