the bellhousing is an integral part of the c6 tranny, meaning it does not come off. so if you are getting a c6 from a big block, it won't fit a 302. it takes up approximately 60 hp to run while the c4 only eats 40. maybe it takes 40 hp to run, i know this one for sure but i can't remember now. it weighs like almost 100 pounds or maybe more, i have one in a truck and had to carry it by myself a few times.