Quote:
Originally Posted by bljweeks  Got it set at 12 from 4 and it seems to be running ok. Will i leave it there or step it up even more? why the big differeance in timing from 4 to 12 degrees like my sticker under the hood says?? |
When you change components like your carburetor, intake manifold, and distributor from stock, the optimum timing setting usually needs to adjust to fit the application.
Often you are getting either a cooler mixture or velocity has decreased in the intake port, which requires an earlier spark.
Actually many completely stock applications can gain performance with some increase in spark advance.
It's normal.
