pulley diameter/actual boost ????s
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From: Houston, tx
pulley diameter/actual boost ????s
I have an 02HD. sorry for intruding, but you pully guys can answer this one...
After reading another post, it occured to me that we 02hd guys are 2lbs less that you, meaning a larger upper pulley.
How does this affect the "rating" of the aftermarket lower pulleys for our truck? In other words, a 6 lbs pulley may not be +6 but actually only +5 or something along those lines because of the different upper.
Or, does this not matter and 6#s is 6#s regardless?
If this is the case, the aftermarket 4# pulley is going bye bye in favor of a 6 which would not really be 6, but maybe 5, therefore putting me +3 over a stock L.
I don't see how this can be possible. The variable is the upper. The lower is increased in size. If the lower increases 20% in diameter, it increases the ratio on both setups by 20% and therefore increases RPMs by 20% in both engines, right?
Ken
After reading another post, it occured to me that we 02hd guys are 2lbs less that you, meaning a larger upper pulley.
How does this affect the "rating" of the aftermarket lower pulleys for our truck? In other words, a 6 lbs pulley may not be +6 but actually only +5 or something along those lines because of the different upper.
Or, does this not matter and 6#s is 6#s regardless?
If this is the case, the aftermarket 4# pulley is going bye bye in favor of a 6 which would not really be 6, but maybe 5, therefore putting me +3 over a stock L.
I don't see how this can be possible. The variable is the upper. The lower is increased in size. If the lower increases 20% in diameter, it increases the ratio on both setups by 20% and therefore increases RPMs by 20% in both engines, right?
Ken
Last edited by ken800; Jul 3, 2002 at 12:17 AM.
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