I have a pretty nice engine I put together. It wasn't cheap.
I have a 1971 360 block (up to 1975, I think, are stronger blocks due to high nickel content)
Hughes Engines girdle Roller lifters/rockers sourced from Hughes K1 forged 4" crank/rods Diamond forged pistons custom built for me (I have the serial # so they can be reproduced w/ their program) Hughes cam (alot like a 5.9 Dak R/T cam but on 114LSA) Eddy Stage II heads from Hughes Eddy Super Victor Jr. intake. Melling HV pump Eddy high flow water pump MSD Pro Billet dist. MSD 8mm wires Cometic Gaskets
Good for 650 hp and 589 lb/ft torque at Southland Performance in Gray, LA. It looks like they are Southland Speed now.
I can look up the dyno sheet somewhere I'm sure. It could do even better but it's right where I want it. Definitely could reach the limits of the stock block really easily. I wouldn't do this with a non-"high nickel" block. I would love to do the same thing but a 416" with a 340 resto block.