Im really new to the tuning stuff but my set up is a 2000 silverado with LM7, LTs, stage 2 GPI cam, CHE trunnion, stock heads, circle D 2800 stall, 3.73s, 3 inch y pipe back to single dynomax ss dumped behind cab, gpi pushrods, LS7 lifters, k&n CAI, built 4l60, Holley EFI fuel rails etc, etc. At normal driving on freeway my AFR gauge bounces between 14.45 to !4.95 and at WOT it drops to 12.3 or so. Im new to understanding AFR etc but does this sounmd normal? im also new to the forum scene so forgive me for posting incorrectly if i am. thanks for any info in advance.

 

your cruise range is very normal, and your wot range is very safe, but normal. it could be leaned up at wot to 12.8 or so and still be on the safe side. whether it picks up power or not by leaning it up can only be confirmed on the dyno or a track.