[CJ428CJ]

Denny,

Before you decide on a cam, get yourself a copy of the computer simulation software called Dyno2000 (aka, Desktop Dyno). It costs about $40 and it does a wonderful job of helping you compare camshafts in your simulated engine. I've heard of others that have used it and then had their actual engine dynoed and the results were remarkably similar. I wish I had bought it before selecting my cam. I selected a cam for my 428 that the program shows puts out 458HP@5500 and 493 ft-lbs of torque at 4000rpm. Other similar cams I could have selected came in as high as 483hp or 511 ft-lbs of torque. I plan on posting a spreadsheet a little later today showing the results of the 20 or so cams I compared.

Regarding your compression ratio, I think 11-1 is a bit high. I'm not familiar with 460s so I don't know if their prone to preignition, but I'd suggest 10 or maybe 10.5-1 is the most I'd go. Running aluminum heads will help a lot (they don't retain the heat as well as iron heads) and using a long duration cam will allow higher compression ratios (the valves are open longer which prevents the cylinder pressure from getting as high as it would in a short duration cam). I'm running 10.25-1 in my 428 and I'm glad I didn't go any higher.

Chris