Aluminum vs. Cast Iron Heads
09-07-2004, 11:20 PM
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On an engine with low CR, like 8-9.5, Iron heads are going to perform a bit better (with port sizing and chamber cc equal).
The biggest advantage for AL is the weight, you might save 30-40lbs off the motor by going to AL heads. You can run higher CR without running into problems.
The biggest advantage for AL is the weight, you might save 30-40lbs off the motor by going to AL heads. You can run higher CR without running into problems.
09-08-2004, 12:49 AM
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Aluminum also has the advantage of being more repairable should they be damaged, which is especially good the more money and work you have in them.