Quote Originally Posted by r.barn View Post
Iron blocks came in the truck and SUV's and weigh about 70lbs more
than alum. blocks.

Iron is stronger and cheaper to find
70lbs weight savings isnt gonna mean much to you in a 4,000lbs truck

Aluminum will take just as much as the cast and the weight is about 140lbs difference...that's why i went with an LS2 block