[big gear head]

Stick that crank and rods in your 4 bolt block with a good set of forged pistons and let it spin to 7000 RPMs. I used a 6223 crank and a set of polished and shot peened LS6 rods with ARP bolts and TRW pistons and shifted it at 7000 for several years. I've got better rods and lighter pistons in it now and going to 7300. Just be sure that the valve train is up to it. Dropped valves set off a huge bomb.