You might try Bullit Cams, they do custom grind work for V8's, they might be able to help with the inline as well. I think Lunati Cams also does custom work. Changing the cam on just a few cylinders might be pretty tough, but who knows, it might not be that big of a deal. Our high powered engine analizer won't let it happen so I can't run any engine combinations for you, it will only let you change the whole cam.
Whats the idea behind this? get more exhaust out or use the overlap to pull more fuel rich air in?
You might hunt up so custom made rocker arms, or alter some for higher lift on the exhaust, that would get you part way there. Our Pontiacs like to run with 1.65 exh and 1.5 int rockers, so maybe the Chevy would to.
Until its tried, we won't know if it works or not,
Joe
