don’t know if you know what you’re now arguing. Your video on cylinder head Wright verifies my weight estimate of a pair of big block heads at 102 pounds….
the rest of this is just math:
Aftermarket aluminum big block heads are about 60 pounds for the pair.
a stock assembled RB weight is approximately 670 pounds.
a stock assembled 360 LA is approximately 550 pounds.
That’s a difference of 120 pounds making the LA lighter.
even if you shaved 40 pounds off an RB by using aluminum heads it still makes the 360 LA LIGHTER by about 80 pounds…
All of this is just the engine. Keep in mind the rest of everything else behind and around the big block also weighs more too.
big blocks are cool, I have them too, and will have more and all of this is to each their own. But small blocks in an A body is easier to work on and lighter
EDIT; fyi, the original video of that’s 408 weight shows it has all the front end accessories and motor mounts and Everything on it too. all my comments involved stock weights. Furthermore if you want to compare apples to apples put all that whizZy aluminum stuff on the small block and make the comparison equal it will weigh LESS….