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Old Mar 6, 2007 | 11:33 PM
  #1  
Ben-jamin's Avatar
Ben-jamin
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From: houston,tx
advertised h/p

i've noticed a few of these 7.3's have a sticker on the valve cvr.that shows 2 different h/p ratings. is that all in the pump (fuel rate) or is there more to it?
 
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Old Mar 7, 2007 | 01:44 AM
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From: Kent WA
I believe those are the High Altitude and NON-High Altitude ratings, and the difference is in the calibration of the pump.

The High Altitude version is the lower of the two numbers.....
 
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Old Mar 8, 2007 | 09:35 PM
  #3  
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Dave Sponaugle
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Pump calibration and timing are the differences.
 
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