Quote:
Originally Posted by HandOverFist
So, there are no valve spring rules in print...only cam spec's.
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click on this link 2014 IHRA Rule book..
http://www.bluetoad.com/publication/?i=186944&p=1
page 49, 5 up from the bottom
If you need the specs for your combo, Contact IHRA tech for the Blueprint tech sheet. that will give you all the info, cam and springs, etc.