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Discussion Starter · #1 ·
How much is it going to cost to do a big valve head on a gtr for a drag engine?
 

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Depends who you get to do it and how much you are doing.
Since you are considering larger valves you likely are also considering large cams. Those will also require machining to fit as the cam lobe on the 9.7~+ cams will interfere with the head casting.

If it's going to be drag only Endyn provides some interesting CNC port work.
Price list
http://www.gtrpwr.com/downloads.php?do=file&id=783
 
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