Iron heads vs Aluminum small block Chrysler .

[David Lee]

Originally Posted by MIRADA

I know this question has likely been asked a lot but anyone using the replacement NHRA approved aluminum heads are you seeing gains , or would you have not spent the money in retrospect? Pros and cons would be great to hear , I am looking at getting a set done .. thanks

talk to shane at precision cylinder heads

[James L Miller]

I think the aluminum heads would be great for SS where you can weld up the ports and reshape them. Not sure about stock unless it was for a big valve 340 with 2.02" intake valves. BB heads are worse with too big of valve sizes for stock. I suppose it depends on your wallet. It would be interesting to hear of the cost difference between prepped iron and aluminum heads.

[GTX JOHN]

It appears most real fast 340 Stockers have them now.
They require a lot of work to be successful and are not cheap!!