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Whats The Difference Between A SO vp44 And A HO?

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  #1  
Old 10-07-2007, 03:01 PM
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Default Whats The Difference Between A SO vp44 And A HO?
Ive heard that the SO is better for a hi hp rig.
 
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Old 10-07-2007, 03:36 PM
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yes..... ho`s are for people who want to feel cooler driving off the lot!
 
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Old 10-07-2007, 03:51 PM
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The way I understand it is that the SO will out fuel the HO on the upper end. Just my little nugget of knowledge.
 
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Old 10-07-2007, 07:31 PM
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yes the SO is the better pump. If my HRVP ever goes bad I will go back to an SO pump. The HO's dont respond to mods as well from what I understand. I am not sure but I think you can put an SO pump on an HO truck but not positive.
 
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Old 10-07-2007, 07:47 PM
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The reports are that the HO is stronger for the 400hp and under trucks but fall on their face once you pass that point.

Dissclaimer: I have no personal experience with the HO pump, just repeating what has been hashed out in past postings.
 
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Old 10-07-2007, 10:31 PM
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So what makes an SO better? bigger vanes? or what?
 
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Old 10-08-2007, 03:13 PM
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My understanding is that the SO pump responds to a timing box better than the HO pump.
 
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