PRW 32-33 PQ Series Ford FE Shaft Mount Rocker Rev 1-9 - Manual (Page 2)

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Ford FE Shaft Rocker Arm System Installation:
Step 1: The rocker arm roller tips must be immersed in oil for at least 3 hours prior to installation. This will allow full
lubricant penetration of the roller tip and axle. A disposable aluminum baking pan works well for this purpose. NOTE: It
is critical to thoroughly pre-oil all shaft rocker components prior to use.
Step 2: Thoroughly inspect both cylinder heads to ensure that there are no obstructions that may impair the rocker stands
from bolting into place on an even plane.
Step 3: Utilize a thread chaser to assure the threads of the cylinder heads are clean and to insure the rocker stands will
mount securely to the cylinder head.
Step 4: Verify that all rocker stand studs can be threaded to operational depths through the rocker shafts and stands and
into the rocker arm stand stud holes, prior to applying torque to any of the rocker stand studs. Confirm adequate depth for
rocker stand studs with calipers or depth gauge.
Step 5: The kit includes eight (8) numbered billet rocker stands. The billet stands are numbered to match with the
corresponding cylinders 1, 2, 3 & 4 on the passenger side and 5, 6, 7, & 8 on the driver side. PN3339021 contains eight
(8) single stands. PN3339022 contains four (4) single stands and four (4) double stands. The rocker arm system is pre-
assembled with the aluminum spacers in their respective positions. Take some time to become familiar with the layout of
the assembled parts and components before beginning the installation.
Step 6: When installing the rocker shafts, be aware that the oil-feed holes must be facing down – towards the cylinder
head. This will ensure proper lubrication to the rocker arms. Otherwise, premature and excessive wear of the various
components will undermine the integrity of the rocker arm system. Remove the socket head machine screws from the
shafts, inspect for any debris, clean the central shaft and other oil passages, re-install and secure the socket head screws in
the ends of each rocker arm shaft with thread locker.
Step 7: Start assembly from one end; working toward the opposite end of each cylinder head. Coat the inside bushing
surface of each rocker arm with assembly lube (do not use Moly lube) before installing the rockers on the shaft, being
careful not to mar the bushing surface in the process.
Step 8: Install the first rocker arm between the outer stand with the pedestal numbers facing towards the intake manifold.
If using the double stands for cylinder numbers 1, 4, 5, and 8 the retaining clip is not included (or required) to secure the
end rocker arms on the shaft. Only single stands require the retaining clip at each end. Continue the installation in
cylinder order; working towards the opposite end of the head. NOTE: Both OE production and aftermarket heads
require shims, using similar or different thicknesses between the pedestals or spacers on either side of the rocker arms to
insure the roller tip of the rocker arm is properly aligned with the valve stem. Proper alignment may require a few trial
installations, making certain that there is at least 0.005” clearance between each rocker arm and pedestal or spacer.
Step 9: Install the studs finger-tight temporarily and check the rocker arm alignment on each cylinder head completing
one head at a time. Each kit comes with 5 mounting studs per head with only 4 being necessary. There are six (6) full
shank studs (for intake ports 1, 2, 4, 5, 7, and 8) and two (2) undercut shanks (oiling studs) that are tapered for oil flow
(ports 3 and 6). OE production heads require a longer mounting stud for the oiling passage ports 3 and 6 (3.750” long).
Edelbrock and other aftermarket heads require the same length studs at every location, with the oiling studs (3.50” long)
used in the same location as the OE production heads.
Step 10: Once proper alignment has been confirmed, remove the rocker arm assembly keeping all shims intact. Remove
the rocker stand studs.
Step 11: Apply removable strength thread locker (PRW Permanent Blue Threadlocker or similar) to the base of the rocker
stand studs provided (course threaded end) and reinstall the studs hand tight. Heavy torque is not necessary when using
thread locker. Assure that the studs are threaded completely into the mounting holes. NOTE: The mounting hole with the
oiling passage requires the undercut stud. The OE Ford cast iron head requires the 3.750” undercut stud. Most
aftermarket heads require the 3.500” undercut stud above intake ports 3 and 6 and the installation of oil restrictors.
Step 12: Reconfirm rocker shaft oil holes are pointed down (towards the cylinder head). Double check the roller tip and
valve stem alignment. Recheck to confirm at least .005” clearance between rocker bodies, rocker stands, and spacers.
Install or remove shims as required. If installing PN3339021, affix the rocker shaft retainer clips to secure the end rocker
arms, making certain that a shim (.015” or thicker thrust washer) is inserted between the end rocker arm and the retainer
clip.