Lingenfelter L200315297 LPE High Volume Oil Pump Instructions v1 1 - Manual (Page 2)

The Lingenfelter Performance Engineering (LPE) high volume GM Gen III & IV V8
oil pump is recommended for use in applications that will require increased pump flow
to achieve the desired oil pressure. Engines with piston oil cooling jets, radiused crank
bearings, aftermarket lifters or increased build clearances may require a higher volume
pump to achieve the same oil pressure, especially at low engine speeds and higher oil
temperatures when the pressure relief valve (PRV) is not in control of oil pressure.
This oil pump is supplied with a standard pressure relief spring installed in the pump’s
pressure relief valve. This spring is yellow in color. For most applications this is the
spring that LPE recommends you use. For cylinder deactivation equipped engines you
will want to use the higher pressure relief spring. If a higher oil pressure is desired,
remove the yellow spring and replace it with the supplied orange spring. The orange
spring will provide a roughly 10 psi increase in peak oil pressure. With the installed
standard pressure yellow spring, the pressure relief valve should start to open at 33 psi
and be in full relief at 65 psi while with the high pressure orange spring the relief valve
should start to open at 43 psi and will be in full relief by 75 psi.
Torque the pressure relief valve plug to 12 Nm (106 inch-lbs) with an 8 mm (or 5/16”)
Allen socket.
NOTE: Changing the relief spring will not change the low RPM idle pressure.
Oil pickup tube O-ring:
Two different pickup tube O-rings designs exist. Figure 1 usually applies to truck
applications and Figure 2 usually applies to car applications. If the end of the pickup tube
that installs into the oil pump looks like either design in Figure 1, use the supplied green
O-ring (the stock O-ring should be green or red in this application). If the end of the
pickup tube that installs into the oil pump looks like what is shown in Figure 2, use the
black O-ring (the stock O-ring in this application should be light blue).
L200315297 LPE high volume oil pump instructions v1.1.indd
Lingenfelter Performance Engineering
1557 Winchester Road
Decatur, Indiana 46733
(260) 724-2552 phone
(260) 724-8761 fax
www.lingenfelter.com