Edelbrock 1406 on 318 jetting

The stock 1406 is a good starting point.Do not go too lean to gain fuel economy.You may end up with poor driveability.
Density Altitude Plays a major roll in jetting . What works at sea level may not be the best at 3,000 ft above or more.
Edelbrock web site has a good scale and diagram for proper jetting.