That looks good to me. Maybe a slight bump in fuel pressure or a slight change in the fuel map. Other than that its good.

 

huh i was told it was lean

 

Seems like you're about .3 or .4 down from what I remember a couple cars pulling on the dyno here locally a couple years ago.

 

I worded that bad, a couple years ago they were about 12.7 to 13.2 or so, sorry for not making that clear...

 

13.6:1 is actually not lean. You just tend to make a little more power with an LT1 if you lean it out a bit. As long as you dont have detonation then its not lean. If I were you I wouldn't be so worried about peak horse power as much as having a nice steep drive to at least 350rwhp from 4500-5800. With the numbers above that I would be more than happy. ESPECIALLY with stock internals. Dont spin it too high. It would be a good idea to do a little upgrading in bearings, fasteners, and an overhaul if you plan on taking it above 6000.

 

I actually plan on having my AFR around 13.0 the whole time and when I spray, I will just use fatter fuel jets to make sure I am around 12.0...but I have unlimited access to a chassis dyno...so that makes it easy...