State patrol motor
#4
The Iron heads are about 50 lbs heavier than the aluminum heads. The cam that came in the caprice motors that had the iron heads was a milder cam but produced more torque. The aluminum heads are usually silver in color, well mine are, they don't rust like the cast iron heads.
#6
I just checked the number on the heads and they're the iron heads so I guess they just swapped everything except the intake? So im sure it has the milder cam too. So much for porting the stock heads, I don't think I want to spend all that on the iron heads. That's not what I wanted to find out! I guess they didn't know about it
#9
I dont know the exact numbers off hand, but I believe you gain 5-10 ft lbs of torque but lose around 30 hp with the iron head setup. Personally I don't think its worth that little bit of torque. I just went through that with a motor I picked up.