I'm in the process of building a 383 and I need some ideas on a good cam grind. This will be used on the street and track, auto trans with a 10" converter and 373 gears. I will not be using any vaccum, manual brakes and mechanical advance dist. I'm planning on this operating between 3000 and 7000 rpms. I need to know a good centerline and lift and duration. I have had bad luck before using store bought cams, they all seem to be ground more for street use and the throttle response sucks. I want very fast revs and smooth top end. And of course being driven to the grocery store on weekends it needs an impressive idle.(or lack of!). I have been out of engine building for a few years and after getting dusted by young punks in GT 'stangs I want to hurt them bad, time to tear down the wifes firebird.