[RodKnock]

My engine was just dyno'ed today and the engine builder told me the following:

"We leaned it out to get an extra 20hp to 12.5 A/F ratio. If you want, I can rejet back to 11.8 A/F ratio, but 12.5 is fine too!!"

My engine is a 482, Shelby block, Edelbrock heads with bigger valves, Holley 850, Shelby dual plane intake, Crower hydraulic roller cam (112 LSA, 244/252, .618/.638).

From what little information that I've supplied, what are your thoughts? Thank you.