ive owned both.i like the bbc but i could and have built 2 for 1.when my bbc came apart it was startin to get tired but still ran strong.had 2 sbc in the shed gettin rusty so i built one with all the go fast parts made. built long block ( needed everything for a sbc). when i got done i could grab this mouse by the throat and squeeze it to 10.000 and it was in my 55 that im lookin for to this day.i still had enough money to build a mild sbc short block. good thing i run a parts store when i built these. i love to hear a sbc scream for mercy ( or give me MORE) !!!!! did i mention that my store had a machine shop also ? our man was a racer and a friend so machine work was extensive but cheap.