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Discussion Starter #1
How much power can i get out of a 400 with stock heads with a mild port job?
What cam?
 

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Stock 400's have real poor heads, restrictive intake, low lift cam and low compression which limits the HP potential.
I would at least switch the heads. With 64cc heads you'll boost the CR and greatly improve air flow which is the essential building block for power production.
 

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Discussion Starter #8
thats about what im looking for i just need enuff to get me in the low 13sec range.
 
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