i believe 55's weigh more in the range of 3300 lbs than the mentioned 3150. i got a hardtop somewhat stripped down, 1 seat, v-8, fiberglass front clip, 3100 lbs, sedan 55 bbc weighs 3640, seats, stereo whole nine yards, power windows. so i'd assume around 33-3400 with sbc for real weight and models. both of the cars were weighed at a dmv station.