is 8 deg ok for your hei? i found this out the hard way when i switched over to it. the manual calls for 4 deg or something, mine ran awful at that. i have to advance mine off the timing tab for it to run great, like 15 or 17 deg. after it is broke in you might try setting it with the vacumm gage and trying some accel. runs up long hills and see if it pings back it off. then you can toss the light in the trash
- just kidding. hey, i'm no expert though. but i scratched my head for a while trying to find out why it wouldn't run at original setting and finally gave up after all i wanted to drive it where it ran good. i tried the advancing it a tooth at the time it didn't help mine. once it did i would just have to rotate it more. good luck, those 66 chevies want to run and i bet yours will. hoggyrubber
