Joined: Wed Dec 21 2005, 07:34AM
Location: indiana
Posts: 791
I would theorize that any coil producing more voltage to the plugs is gonna require more amps thru the primary side of the coil, and on a points dizzy that means directly thru the points. Where energy is concerned, you can't get something for nothing.
But like AF said, why keep running points. There's no reason to in your case.
Years ago I had really good luck with a MSD-5 triggered by the elec ign retrofit kit and running the stock-shape Accel coil. When I started the car up afterward it was noticeably quieter at the tailpipe. Ran that setup for probably 70k miles with out a whimper before I swapped engines and went to the MSD6 stuff. I use MSD6 and their Blaster coil on everything now, and it has a really hot spark (MSD6 is capacitive discharge, and it runs more than 12v thru the coil). The only complaint is that I now go thru rotor/cap very 5,000 miles or so (remember, hot spark has a price). But I don't drive them as much as I used to, so it's not a big deal to me.
A hotter/colder sparkplug is unrelated. Hotter plugs have shorter insulation down inside the combustion-chamber end, and hold more heat in them, which helps engines that burn oil or have too rich a mixture. If your engine has a lot of miles, or you're plugs are coming out wet or sooty black, hotter plugs will last longer before they start fouling out. Only a hi-perf or nitrous/turbo/supercharged engine needs a colder plug than stock.