383man
Well-Known Member
One thing many dont care for is the worry about 50 year old iron heads cracking when heavily ported. Myself for my mild street build to run on pump gas I want a closed chamber head so I can build easy quench in the eng which I did with the eng in my 63. The aluminum also helps fight against ping on pump since it disapates heat better. I do my own head work and did port and do all the valve job work on my 906 heads I used on my old 440. For a guy like me I can do iron heads cheap as I only have to buy the parts but for the average racer who dont do their own head work they are gone to pay alot of money to get a good ported set of iron heads to be done right. Thats why many will buy the Eddy's and Stealth heads which work fine on mild builds and many track builds. Myself I prefer to use the aluminum heads for a few reasons one of which since my car is a pump gas eng.
Now if someone builds brand new iron heads today that are a good modern design I think they would sell as technically all things equal iron heads will make a tad more power but of course weigh more. I went with the basic EZ heads on my street/strip build because its not hard to get 320 to 330 flow out of the intakes and I feel they have a little more potential if I want to get more serious with my build down the road. So I believe the Eddy , Stealth and Indy EZ heads are great heads for a nice build and most will use them over iron heads because most will spend to much money to have a set of iron heads heavily worked over and the aluminum are new and not 50 years old and most are closed chamber and make it easy to build quench in the eng. And all of the aluminum heads will way outflow stock 906's and if both are ported the same the aluminum will still outflow 906's. Ron
Now if someone builds brand new iron heads today that are a good modern design I think they would sell as technically all things equal iron heads will make a tad more power but of course weigh more. I went with the basic EZ heads on my street/strip build because its not hard to get 320 to 330 flow out of the intakes and I feel they have a little more potential if I want to get more serious with my build down the road. So I believe the Eddy , Stealth and Indy EZ heads are great heads for a nice build and most will use them over iron heads because most will spend to much money to have a set of iron heads heavily worked over and the aluminum are new and not 50 years old and most are closed chamber and make it easy to build quench in the eng. And all of the aluminum heads will way outflow stock 906's and if both are ported the same the aluminum will still outflow 906's. Ron
