PRW 33 PQ Series GM LS Series Shaft Mount Rocker User Manual
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PRW Industries, Inc.
1722 Illinois Avenue
Perris, California 92571
Tele: (951) 436-7900
Tech: (888) 377-9779
Shaft Mount Rocker Arm System
Installation Instructions
Small Block Chevrolet Gen III ls1 cylinder heads
3334611/12 Parts List
Item
Quantity
Rocker Arm Stands/Pedestals
2 each
Rocker Arms (Pairs)
8 each
8mm - 1.25 x 19mm Pedestal Bolts
16 each
5/16” Rocker Arm Shaft Bolts
24 each
3/8”-24 Valve Lash Adjusters
16 each
3/8”-24 12 Point Adjuster Nuts
16 each
Rocker Stand Shims ( 2 Thicknesses)
8 each
Shaft Height Gage
1 each
Thank you for purchasing a Performance Quotient® product. PQ
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Series Shaft Mount Rocker Arm Systems are
engineered and manufactured by PRW Industries, Inc. to maximize valvetrain efficiency for many popular
Chevrolet and other GM, Ford, and Mopar performance aftermarket and racing cylinder heads. CNC machined
billet steel pedestals, centerless ground steel alloy rocker shafts, PRW aviation quality fasteners, and needle
roller bearings comprise the foundation of PQ
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rocker arms and related systems.
WARNING TO INSTALLER: Installation of this rocker system requires modification of all factory
valve covers, or the use of a valve cover spacer. Stock covers must have the baffle(s) removed in order to
clear this rocker system. Under no circumstance should the rocker system be modified.
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Shaft Rocker Arm System Preparation:
Please read these instructions carefully before beginning your installation. Also, take a moment to review the
limited warranty information. If there are any questions or problems during the installation, please do not
hesitate to contact the PRW Customer Service Hotline at 1-888-377-9779, between the hours of 7 a.m. and 5
p.m. PST Monday through Friday.
1) Confirm that all parts are included by comparing to the parts list.
2) Make certain that you have all the tools necessary to complete the project.
3) Assembly lube and/or lubricating oil should be readily available for installation.
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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.