-> On 12-02-95  16:17, George Skinner got back to Dan Ceppa 
 -> an up and down motion.  The direction of the low is not controlled by
 -> the cam but by the valving in the pump.
 GS> fuel pump operation. Unless as I stated before that the cam lobe, if it
 GS> was not concentric in shape may interfere with fuel pump operation.
I'm not sure if any cams are built with a high excentric on one 
of the sides, especially for fp operation.  Except for very high 
performance engines, it's nearly impossible to tell a stock cam 
from a "throatier" one.  The very HP are designed to run a roller 
lifter and they are very easy to compare against a stock one.  
The differences in lift of stock through intermediate cams is 
measure in hundreths to at most a 1/10 inch or so.  
BTW, there are 2 reasons a marine cam is different.  The primary 
reason is the engine's intented operating speed.  Few marine 
motors have more than a forward and reverse driveline.  The cam 
is designed to give optimum performace for cruising speed.  
The other is for the reverse rotation engines.  In that case, 
a stock cam would open the valves in the opposite sequence 
necessary for the 4 cycle power order.
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