1978 400 351 lbs
1974 440 376 lbs
That is the weight of a LB and a RB short block. Not counting the intake or push rods. Andy weighed them in one of his articles. Add the weight of the push rods and intake and you will with in a pound or so of 30 lbs.
As far as the two examples you gave one RB and one LB they are not even close. How would you deduce that one would be superior over the other or not by two completely different engines. They are not even close.
I hope you have all that information on those two engines where you can copy and paste it to save time. Now where's my Moroso slide-rule 775 hp and.....
