PRW 09 PRW Billet Steel Main Girdle User Manual

Page 2

Step 11
Install the windage tray, if using.

Step 12
Install the oil dipstick. Be sure it fits all the way in and does not hit the girdle.

Step 13
Check the positioning of the oil pump with the bottom of the oil pan. The pick-up should be parallel to the
bottom of the pan, and between a ¼” and 3/8” from the bottom.

Step 14
Install oil pan.

SPECIAL NOTES: PLEASE READ ALL THE SPECIAL NOTES ON THESE INSTRUCTIONS
FOR ADDITIONAL IMPORTANT INFORMATION.

Special Notes: Most applications will require some additional machining of the girdle for a perfect fit.
For example, the Oldsmobile 403/455 main girdle is designed to accept 7/16” studs. The main cap bore
holes must be reamed out to accommodate the ½” studs required for the 455ci engine.

In many cases, the main cap studs are designed longer, with additional length for windage trays, extra
clearance for aftermarket main caps, or more distance between the main caps and the girdle for
crankshafts with a longer stroke. For those reasons, the studs provided with the kit may need to be
machined to a shorter length. If the studs need to be shortened, remove material from the SAE NC
threaded end of the studs whenever possible. Only a qualified machinist with the proper cutting tools
should be employed to remove material from the studs and properly dress the threads.

Always check the depth of the main cap bore hole depth in the block; and assure that the threaded end
closely matches the depth of the threads in the engine block. Do not over-tighten the studs into the block,
especially if the bore hole is deeper than the length of the threads on the main studs!! Use a quality thread
locker (such as the one provided by PRW in the kit) and hand-tighten only if you are uncertain of the
depth of the threads into the engine block.

The PRW engineering staff has designed these stud girdles to require a minimum of machining for most
installations. However, longer crankshaft journals, specialty oil pumps, and other aftermarket
performance parts may require additional fitment. Some OEM oil pans are not designed to accommodate
an aftermarket main girdle. Be aware that these parts are designed for racing and, as such, will require
expertise to make certain all of the parts being installed are correctly matched and work together
seamlessly. The engine builder is responsible for final fitment and appropriate installation clearances.

p:\product\installation guides\prw complete\PRW Billet Steel Main Girdle incl Olds v1-4.doc

PRW Industries, Inc.

1722 Illinois Avenue

Perris, California 92571

Tele: (951) 436-7900 FAX: (951) 928-

8555

Tech: (888) 377-9779