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G'Day all, A couple of queries on what it takes to obtain hp gains from either of these heads as regards to port and polish work ,or are they fairly good as they are ? Approximate dollars needed, and at the end of the day will one head flow better than the other ? Also are there many of these heads modified available ? I have not been able to find any advertised ebay etc. Intended for use on speedway and methanol fuel.
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if its for the speedway go there and ask around you'll soon be in the know.they both have there pros and cons cast iron has bigger ports but alloy seems to be a better disign,cast wont corrode out alloy will,alloy head is around 20 kilos lighter that tne
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All depends what division of racing you want to do. I race street stock and use a high compression c1 head thats been shaved. In street stock you not allowed to port and polish or change carbies so alloy is the way to go cause the air flow is better, bigg
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thanks for the info Spook,will keep it in mind.intended class is six cyl. sprinters,Regards, Pete.
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quote:
Originally posted by tuff 250
if its for the speedway go there and ask around you'll soon be in the know.they both have
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