Originally Posted by gearheadslife
iron always makes more power than alum..
alum is just easier to cast..
nascar engines make over 80 hp with iron over alum.. but are a one race deal.. when they qualified and pulled engines then ran another in the race iron was the ticket.. but where a one and done part..
That is interesting, you would think that the added compression, cooling, and reduction in weight would have made all the difference.