Quote:
Originally Posted by Lew Silverman
So in the example that Greg gave with his 327, a camshaft with a lobe lift of .260 and a rocker arm ratio of 1.5 would give a theoretical lift at the spring retainer of .390, as specified. Could you not also use a camshaft with a lobe lift of .24375 and a rocker arm with a ratio of 1.6 to get the same lift at the retainer and still make spec? It would also, I think, open the valve faster and improve cylinder filling. Another reason to fabricate a head dyno!
Lew
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Unless the rule has changed, a 1.6:1 rocker arm on an engine that came with a 1.5:1 rocker arm is illegal in Stock Eliminator.