iron vs aluminum

General engine tech -- Drag Racing to Circle Track

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bc
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iron vs aluminum

Post by bc » Wed Apr 20, 2005 3:45 pm

Is there really a difference in hp between iron and aluminum heads? I have heard that you need to run 1 point higher in compression to make up for the loss of heat. Has anyone actual tested this?

68corvette
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Post by 68corvette » Thu Apr 21, 2005 12:08 am


ChadS
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Post by ChadS » Fri Apr 22, 2005 7:09 pm

The combustion chamber shape is the same between the two heads, but the aluminum Motown 220 Lite offers a CNC-machined chamber as an added bonus.
Sounds like another "fair" magazine comparison....

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