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#1 |
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Join Date: Nov 2006
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Are Under Cut and or Hollow Stems legal in NHRA Stock?
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#2 |
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Join Date: May 2006
Location: Murfreesboro TN
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Evidently. The rule book says that stainless can replace regular "steel" valves, the stem diameter and head diameter must match the OE spec in the guide, titanium is only legal if the OE part was titanium, and the stems may not be filled unless the OE part was.
Hollow stem undercut stainless valves with OE diameter heads and stems have been passing tech for some time now.
__________________
Alan Roehrich 212A G/S |
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#3 |
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Join Date: Nov 2006
Posts: 133
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Thanks Alan
Better safe than sorry. |
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#4 |
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Join Date: Jan 2002
Location: Marion, N.Y.
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Here's a dumb question? Are longer than stock valves allowed?
Not sure if they are even needed. Just a question. And im guessing the cut back stems are a no no too? |
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