This lightness and ali thing dont always follow because of the extra material needed to strengthen the things up. Some of the ali v6 and v8 engines are the same weight as an old iron smallblock, sometimes the difference is so small its not worth chasing. Was looking at a pair of ali heads for my engine but they are only worth a 20 kilo total saving, so for the best part of a grand sod it I will leave the iron ones on it.
Bob
|