Porting small block 915 j-heads
You are so right MO!
Steve Dulcich is also a very clever guy indeed has done wonderful work with iron heads too!
He has said in the past that the Small-block 340 head far 'outflows' and Big-block head in stock form.
But I have seen Pro-Porters getting 300 cfm with a 906 and close to that with a 452 especially Koffel.
They also say a badly ported head will put you down in the LOW 200's if you mess up the flow.
This is where the Flow bench tells you when 'enough is enough' and dimishing returns and/or breakthrough occurs!
I am a great admirer of 'Ovalport heads' and love what the Hinkles did with their 550hp POLY build...
You are so right MO!
Steve Dulcich is also a very clever guy indeed has done wonderful work with iron heads too!
He has said in the past that the Small-block 340 head far 'outflows' and Big-block head in stock form.
But I have seen Pro-Porters getting 300 cfm with a 906 and close to that with a 452 especially Koffel.
They also say a badly ported head will put you down in the LOW 200's if you mess up the flow.
This is where the Flow bench tells you when 'enough is enough' and dimishing returns and/or breakthrough occurs!
I am a great admirer of 'Ovalport heads' and love what the Hinkles did with their 550hp POLY build...