408 crank?

Well thankns for all the replys i know there is a limit on the block by far! but im not goin to be turning this thing really hard very often! But im goin with main support system and i got the forged crank issue fixed my buddy ran around 700 hp on his 340 for years with the juice and a 4 speed but im goin to keep my finger crossed that it holds together if it donr then im goin to regroup buy a race bkock and build a small block 426 nest this engine is really a test for me to see how i like the forced in duction way of life ive been running the juice for a while but want to try new things im building a 72 to put a race small block in in the future around a year from now if this engine hold true then ill put the super charger on it changed the pistons in this motor and turn it into a every day driver!