383 intake / carb help for my 73 Dart
3 at idle is really slow-it really should be in the 12-18 area for a bone stock engine, but you'll have to shorten the curve to about 34 or so total. Compression is pretty low though, although consistent at least.
Edit: do you have the stock intake available? It may be an improvement compared to the streetmaster for cruising...but I probably wouldn't swap it until I rebuilt the carb and dialed it in some...if it can't run right with some jetting and pv tuning, and timing, then I'd swap the intake...
Just my .02
I'm sure a couple others will chime in with some good advice.