340 Vs 360

high rpm engines make great hp but alot harder on engine parts, and drive live parts and it cost more to run! torque builds are easier on parts, easier on the streets, cost lil more up front but are cheaper over all!! 8500 rpms ant high rpms,..middle the road! lotta race engines turning 10,000 rpms and living!! use turn a cast chevy crank 8 grand on dirt track forged cranks didnt flex enuff and would brake! in todays world you can build a 8500 rpm screamer and run 10s or build a stroker and turn 6 grand and run tens,... i dont see where youd need a aftermarket block to build ether....DWB