Reman VP44's
#4
the SO Vp44 runs all autos and 5speed manuals. the HO VP44 runs the 6 speeds trucks. The electronics are different on the two pumps. You can NOT run a HO VP44 on a SO engine because of the way the injectors are set up. You can do what I did I swapped my HO pump for a SO PUMP becase HO pump limits you to 500hp and less. The SO pump not responds beter to electronics but supports fueling well past 750hp.
#5
#7
The HO pumps have smaller plungers thus creating higher pressure and lower volume, where as the SO pumps have larger plungers creating lower pressure and higher volume. This and electronics are the only differences, far as I know injectors are the same for either pump.
Last edited by H.R.D; 01-16-2013 at 05:04 AM.
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Mr.A's Dodge Diesel (01-16-2013)
#8
Yes
The HO pumps have smaller plungers thus creating higher pressure and lower volume, where as the SO pumps have larger plungers creating lower pressure and higher volume. This and electronics are the only differences, far as I know injectors are the same for either pump.
The HO pumps have smaller plungers thus creating higher pressure and lower volume, where as the SO pumps have larger plungers creating lower pressure and higher volume. This and electronics are the only differences, far as I know injectors are the same for either pump.
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