Quote:
Originally Posted by mazspeed
I thought the LS3 also had a 6 bolt head design. Isn't the LS3 block stronger then the LS2? The LSX block is also much heaver though, so why would you want the iron block if you were looking for 800 hp or so? Again I don't know so that's why I ask.
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Only gm block with 6 bolt is the LSX iron block . It is 100 lbs heavier.
Ls2 and LS3 block are most likely about the same for power capabilties.