Quote:
Originally Posted by Myron Piatek
The rule book says that "Any valve spring permitted provided no modifications to head is performed."
It sounds like dual springs are allowed. But does that mean the guides and "step" on a Mopar small block head can't be modified anyway? (For different seals/inner springs/guide - retainer clearance.)
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I don't see where this is vague. It says
no modifications. How is that subject to interpretation?