May be mistaken, but didn't we go over this before? The subject of timing comes up a lot and there are many opinions on what is best. What distributor type, brand and setting. There are many variables, but the end game is to obtain a timing setting that gives power throughout the rpm range without spark-knock. Spark-knock can be caused by many factors including too much advance, high compression, wrong fuel octane.
While you mentioned what intake and carb as well as cam, you didn't say what distributor you have.
Personally, I like to keep it simple, no HEI, MSD or even Pertronix distributors. My choice would be a good remanufactured stock Autolite/Mastercraft distributor with the slot plate that will give 20 degrees on the crank or at a max, 26 deg. then set initial to between 10 and 16 deg. depending on your engine, for a total of 36 deg. mechanical plus 4-6 deg. of vacuum advance. If not a stock dizzy, then for sure I'd go with a DuraSpark curved for the engine in question.
As for electronic modules, I have had good success with the Pertonix Ignitor II with the matching Flamethrower II coil. Add to that a GOOD set of wires and distributor cap and (my preference) Autolite 25 plugs.
Please come back with as much information as possible on your engine, compression ratio, heads, closed chamber or open, i.e. whatever you can offer to help members like Hemikiller or DonC amongst others, get you where you want to be with your car.
Geoff.