ADVICE:Baseline carb jetting/engine timing/spark plugs

Try the 650,out of the box. I would run,the Autolite version of the Champion plug,(3924 comes to mind.) MSD's love Autolites.Similar cam.Crower 284 advertised,[email protected],.491 lift/1.6 ratio.Had 21 inches of vacuum@ 800 in drive.Went [email protected] out,to 16 initial ,at idle .Mind you,the distributor was already "curved". This is a necessary detail.I would curve it,before starting it. My cam idled,like a stock 340.800@idle,slight rump.