Got tired of the points routine so I changed over to an HEI distributor, all's well and good, better performance. Several times after driving to work the beast won't start after work or at lunch time, nothing for spark. It's in a 66 El Camino with a 283 and muncie 4 spd. Motor is mildly built. I take the cap off after unplugging the wiring harness, clean rotor and cap, viola, runs good for a week or two then does the same thing. Can't tell you where it's timed at. My original timing is 4 deg. BTDC, the instructions I got online said to set the new HEI distributor to 10 Deg. BTDC. Distributor is just set where it starts and runs best by ear. I have removed the resistance wire and installed regular wire from the firewall connector to the BAT terminal on the cap as per the instructions. Stock HEI cap and rotor (autozone). The first time it happened I removed the cap to check it, reinstalled it immediately and it fired right up. Wondering if a better quality cap and rotor might correct this problem as the stock cap has aluminum posts. I need this problem like I need a hole in the head right now. Getting ready to do a body lift and paint job. :?