Hi,
LT1 Aluminum heads are certainly lighter than the Iron. Are there more disadvantages to using LT1 Iron heads? I wonder about valve size, port shape and all that. Can the Iron heads produce the same power as the Aluminum?

I am asking because there is a 5.7 LT1 out of a Buick that can be had inexpensively. I would like to put together a test mule to learn more about tuning. Other disadvantage of this setup is that it is a 2bolt main block.

-Tom