2003 Silverado 4x2 5.7 243/799 heads 4l80e stall 2800 3.73 and 28.5" tire.

Intake Duration: 218 Degrees at .050" Tappet Lift.
Intake Lift: .595" with 1.7 rockers.
Exhaust Duration 226 Degrees at .050" Tappet Lift
Exhaust Lift .598" with 1.7 rockers.
113 Degree LSA

 

I would say a noticeable lope at idle and it would like around a 3200-3400 stall in a 5.7, I am not a expert though so take that with a grain of salt.

Should still have good lowend with that intake duration and LSA. JMO

 

Pat Im going to keep the baby stall and try it I can always get it restalled. Since I dont think Ill be getting a Badass boat like John(Mangled03gmc) I would use the smaller 9.5" converter.

 

What stall do you have? Seeing as though you have a RCSB I wouldn't hesitate to run a tighter stall.

 

looks a lot more like a lsR grind for rectangular port heads

 

Nope eps cam for cathedral port.

 

Typical rectangular port would have a much larger exhaust bias.

 

What is the exhaust setup (headers, y, catback)? An 8* split seems to be setup for a more restrictive exhaust since you have a good set of heads. It should work fine with your existing 2800 converter with the low intake duration and LSA. Any advance ground in?

 

1-3/4" longtubes 3" y no cats in to Borla XR-1 dumped before axle. Not really sure if any advance is ground in. Didnt see anything on EPS site.

 

No info listed on the ICL?