Nope. Nothing there has anything to do with ignition
Find out how STRONG the spark really is.
Hook your meter to the coil + terminal and to the battery stud on the starter relay and crank the engine USING THE KEY and NOT by jumpering the start relay. You are measuring the amount of drop in the harness, and should read a very low voltage, NOT OVER .5 volts
Next leave the meter hooked to coil positive, and move the other probe to ground. Crank again. You should have AT LEAST 10.5V and in NO case below 10V
Next check the spark. If you have two people, have one operate the key.
Remove the coil wire from the coil and use a grounded probe like a small screwdriver, grounded with a clip lead, and hold it near the top of the coil tower. Crank the engine. You should get a MINIMUM of 3/8" nice hot blue spark, and many times more like 1/2" spark.
Are you SURE about the condition of the fuel? Has the car been parked "awhile?"
You tried a little KNOWN GOOD fuel down the carb throat? Any chance the carb is flooding and pumping way too much fuel down the engine? RECHECK the plugs, new or old, for wet fouling. With the plugs out, crank the engine a few times to clear the cylinders.
How do you know the timing is correct?