"...Porting, polishing, welding,
epoxying, and acid-porting permitted. Grinding and polishing in
combustion chamber permitted..."
Well, if I understand the English language, that means any type of hand or machine porting is OK.
To me, that means that the CNC porting that some Pontiac shops do is SS legal. Also, I suppose that most any hand porting that increases flow is legal.
Is that the way ya'll interpret the rule ?
So, I think I've read of lots of guys/shops that can port iron heads to flow at least 240cfm or more.
To me, that means that low buck Pontiac SS engine builds can use home or shop ported heads, which will provide enuff flow to make needed power to run the index.
Just curious. For you guys who hand port iron heads. What would you charge for porting some iron heads for a SS build ?
Let me also ask this question. For those who don't port their own heads, but have paid to have a set ported, recently, what did the porting cost ? Were they flowed ? If so, what was the cfm ?
We know the retail price STARTS @ around $2000, for complete porting & valve job.
http://www.sdperformance.com/viewPro...?productID=583
https://butlerperformance.com/i-2445...tegory:1234782
But, I don't know how long a guy would have to wait, for Butler or SD to get around to their stuff.
So, who can do this work, AND actually do it within a reasonable amount of time ? Paul K ? Who else ? Time to name names, if you know any.
http://www.nitemareperformance.com/cylinderheads.html
https://www.hotrod.com/articles/hrdp...pontiac-heads/