Anyone know what the weight of a early (66-67) 440 block weighs compared to a late (75) 440? I weight my car this weekend. Last time it weighted 3040 w/out me. Since then I changed to alum heads, alum water pump, stock pan to a 8 qt pan. Also went from a 66 to a 75 block but internals of the motors are the same. Now the car weights 3055 w/out me? Thinking the block has to be alot heavier, and was wondering what the acutal weight difference is. thanks.