Correct mapping for Camshafts

[CSH-HQ]

If you run thru the archives, and tuning.doc, tuning .txt, you'll find where 
I posted some map/rpm  by ve tables for a comp 270
Grumpy

>Hi guys,
>
>Got a guy I'm trying to help out at a neighboring shop. He's got a customer 
with an
>AWLB Prom (90 GM 5.7L C15 Truck) and the wrong camshaft. 
>
>Right now, the guy has put a Comp Cams 280H (.480 Int/exh and 280 degrees 
duration) in his bone stock truck engine, has only 14" vacuum at idle 
(needless to say his truck is really overfueling). Runs like crap till 
around 3000 RPM because of the overfueling. Only other modification on the 
truck is headers and a dual exhaust.
>
>What's the plan of attack to correct this, based on differing parameters in 
the PROM ? I realise this is a 16146299 ECM, and I'm working on an *.ecu for 
this one right now...but ideas from a 7747 would really help.
>
>Thanks--I'd appreciate straight answers and not things like "he chose the 
wrong camshaft" <g>. I'll at least admit I'm not sure how to reduce fuel vs. 
MAP.
>
>Lyndon.
>