High Compression 390

Thanks for informing me on the 390. The car in my picture is my after racing car/engine. It is 10:1 410 with aluminum W2 heads. I too was concerned about compression. I live at 4000' and have no ping problems. I run 3.23's with a 28" tire. Your truck should be a torque monster. My cam is an hydraulic flat tappet. With aluminum heads you should have no problems unless it's hot an try to bring it up in 4th gear from 10 mph.As far as a cam is concerned, too much duration is the biggest problem as in no low end torque. The cam specs you show will work. The only suggestion is to install it 4 degrees advanced. Unless you just like a rumpty rump sound, too little is way better than too much cam. Go have fun and don't over think your build. I am not an expert just been building Mopars since 1963 The car runs 12.30 's and 108 at Las Vegas