Small Block or Big Block- help me decide

Small bock all the way

Depends on budget ( considered aftermarket K,guess it's not an issue...). I like small block here: 360 is easy 400 h.p., a 408 will make that so easy,you will fall asleep. ( 500 horsepower bogey is easy, with well worked OEM or aftermarket :Edelbrock/Indy/E.Q. heads)