Thread: Expert opinion needed for choosing the propper valve spring
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Old 10-30-2009, 04:19 AM
  #3  
wmeabates
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Join Date: Sep 2005
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A -9 cam is a racing cam.140 and 400 will not keep the lifters on that cam at higher rpm.Putting more spring on the valves you have would cause another problem,both could cause bad things.Bill.
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