What do you turn the jets at for peak performance for a 750 edlbrock performer series?

 

There's no way to tell where you should "turn" the jets. Every motor is different, and you'll have to test different combinations of jets and metering rods to get the most desired setting. The easiest way to do this is to get a dyno tune, but if you want to be able to tune yourself, look into getting an A/F ratio monitor.

There is no "turning" of the jets to change performance either. You have to buy a calibration kit with different sized jets and metering rods and try different combinations.