I'm stuck with the iron heads on my 6.0 for a little while and I was wondering how they compare, performance-wise, to other heads? Are they worth porting while I've got the motor still on the stand?

 

pick up a set of 317's cheap and be done

 

If you are going to pull the heads off, put a set of aluminum heads back on. Get a set ready to go with valve springs and compression ratio for your power goal.

 

I'll have a set of 317's for sale tomorrow evening. I'm picking up a big parts pile

 

How much would you want shipped to 78640? What all could be done to the heads before I put the Radix on? The motor's a stock '99-'00 6.0 (I'm putting a new crank in to mate with a T56), I'm going with the LPE GT2-3 cam. I'm hoping for 500RWHP. I've heard the Radix 112's respond best to around 10 compression ratio. It that right?

 

I don't know much about superchargers or what they respond well to so I cannot speak on that. However I don't see your goals being unrealistic. PM sent on the heads.