380 at the wheels with stock manifolds

 

z98, what are you talking about? Is 380 your number? Is that someone else's number? Are you referring to one of the graphs?

 

I also have the same c1 222/222 566/566 112 cam with stocker ls1 heads, intake & t-body. When I finally slapped the '32 inch longtube headers on w/3 inch pipes it put down 363 @ 6200 rpm (rev limit) and 358 @ 6000 so thats the difference on the extreme of the c1 in that application...the pipes help a ton. This is very similar to the TR 224 cams. Sorry no graph but thats some quantifiable info.
Those are, ahem, mustang dyno numbers (to "complexify" your post) so thats very good. I was 317 bone(r) stock on a dynojet dyno. I'll try and get the graph up but its stronger throughout, damn good for a "small" cam. True 2500-5500 cam.