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Old 04-21-2024, 12:33 PM   #4
Kube
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Join Date: May 2010
Location: Wisconsin, USA
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Default Re: Iron vs. Aluminum 21 stud heads - which is better?

Quote:
Originally Posted by ScubaChief60 View Post
Hello. My 21 stud 1935 V8 has Iron Cylinder Heads. I see I have developed a water seep from a hairline crack in the passenger side head. I am considering now replacing the heads and want advice on aluminum or iron heads. Thoughts appreciated. Take care!
Aluminum cools a little better than steel. Worth the additional cost? Probably not.
Cast iron heads are plentiful and rather reasonable in price. Figure out if you need a head for flat or domed top pistons prior to purchasing any replacement head.
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