What is a good combo for turning high rpm?

Right now I'm running 318 with a stock forged crank, eagle forged 4340 I beam rods, speed pro forged flat top pistons 3.91",RHS x heads with 2.02i 1.62e and mildly ported, Harlan sharp 1.5 roller rockers,6.1 hemi beehive springs, Crane hydraulic roller cam 300/308 .548/.558, eldebrock victor intake, 4150 650 carb, milodon road race oil pan, 2 quart oil cooler, 2 quart accusump and msd distributor and 6aln box.

right it pulls pretty strong to 6700 then it just gives up

thanks for any help.

Just a refresher of my current setup