LS1 cast iron or Alum.

[ma.racing]

lol

now have

65 lbs
99 lbs
170 lbs


Personally 100 lbs "sounds" about right. Thought 65 sounded low, but
thought 170 was high too.

For as cheap as you can get iron truck blocks for I just dont see paying
extra for the aluminum. Maybe in a drag car where you're counting 10th's
but dont see the difference in a 5,000 lbs truck.

what he sead if you had a race car it would be one thing but you have a 4x4 truck

[beertestr]

Can I vote twice? 100 is the closest answer... there, I'm stuffing the ballot boxes.
Maybe I should take some pics of me weighing them next time I have a bare iron block to weigh, the 2 I have right now still have cranks, cams and covers on them.