The only reason that the headers did not work on the stillen SC for the 350 was loosing 1 lb of boost because of the valve overlap in the vq 35. My 5 AT made 303 rwhp with headers. Does any body now what the valve over lap is in the 370?
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 12.343 @114.14 . 4.5 stroker motor is now being built. Dec 1 2015.
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