I believe Tony's right with regards to the headers and how the length affects the torque. I have 36 inch tube headers attached to my 292. Probably losing a bit of low end but the cam more than makes up for it.
I recommend the RV cam for Chevy inline 6s that JC Whitney sells. Works great for me in my 292. My low end (< 2000 rpms) is not as good as my old stock 250 but the mid range torque is superb and HP is greatly improved.
Here's the numbers on my cam>
.464I/.490E lift and 194I/204E duration at .050 Performance-wise those numbers are a little better than stock. I believe the numbers are the same for the 230/250 grinds as well. These cams are produced by Elgin and sold through JCWhitney.
Cost about 80 bucks for the cam. Money well spent in my opinion for extra mid-rpm (2k-4.5k) boost.
-magic mike-
