I got points in my modified 261 engine,revs up fine to 4500 maxium, no misfire.Guys used to run small blocks to 6000+ rpm on single points no problem .I'm using NOS GM points gapped at .016 ,the distributer is recurved and has no play in the cam or shaft. I had a GM HEI on the engine a few years back,no difference in performance between the HEI and the points on my engine.
These vintage engines were designed around points ignition systems, the addition of an electronic system is no guarantee of better performance unless your stock distributer is worn.A clean sparkplug needs around 5000 volts to fire,an HEI with the potential of 40k volts won't offer any more volts. If the sparkplug needs 5000 volts to fire,that all the HEI will produce when the plug fires.High out put ignitions became necessary to fire plugs in in leanburn emissions engines in the 70's. Notice today, many new vehicles have skinny plug wires again? The latest engine designs don't require super high plug voltages.
Since most distributers are old and worn, an HEI or an electronic conversion is a good idea. Or if you're running a radical cam on the street,an HEI firing wide gap plugs may smooth it out some
Has any one tried out a multispark unit on these old 6's, like MSD or Crane?
