It's going to take work. Not easy especially with guide plates. How bad are your current pushrods flexing and touching the head? How many more pounds per square inch does 30 to 35 lbs of boost add to the valve? 70 something? Tom? So if the pushrod sees 300 lbs closed with boost and valve spring pressure why can't 3/8 120 wall work. Call butler and see what they say.
|