LS3/L92 vs. LS2 block
i am new to GM performance. i came over from the "dark side" and it seems that they all go from iron to aluminum and all the GM guys goes from aluminum to iron. seems weird to me.
you stated that the iron block made 15 hp more but doen't that get eaten up and then some with the added weight if you use the rule of "every 7 lbs takes 1 hp". atleast thats what i've always been told.


