COMP Cams Camshaft Installation and Degreeing Procedure - Manual

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COMP Cams®
3406 Democrat Rd.
Memphis, TN 38118
Phone: (901) 795-2400 Fax: (901) 366-1807
www.compcams.com
Part #145
Revised 5/4/12
Camshaft Installation and Degreeing Procedure
Thank you for choosing COMP Cams® products; we are proud to be your manufacturer of choice.
Please read this instruction booklet carefully before beginning installation and also take a moment to
review the included limited warranty information.
This instruction booklet is broken down into several categories for ease of use. Some of the topics may
not apply to every application, but all of the information will be very beneficial during the cam
installation process. For step-by-step visual detail, it is recommended to watch the COMP Cams®
DVD “The Proper Procedure to Install and Degree a Camshaft” (Part #190DVD). If you have any
questions or problems during the installation, please do not hesitate to contact the toll free CAM
HELP® line at 1-800-999-0853, 7am to 8pm CST Monday through Friday, 9am to 4pm CST Saturday.
Important: In order for your new COMP Cams® camshaft to be covered under any warranty,
you must use the recommended COMP Cams® lifters and valve springs. Failure to install new
COMP Cams® lifters and valve springs with your new cam can cause the lobes to wear
excessively and cause engine failure. If you have any questions about this application, please
contact our technical department immediately.
Camshaft Installation Procedure
1. Prepare a clean work area and assemble the tools needed for the camshaft installation. It is
suggested to use an automotive manual to help determine which items must be removed from
the engine in order to expose the timing chain, lifters and camshaft. A good, complete
automotive manual will save time and frustration during the installation.
2. Once the camshaft, lifters, and timing chain are exposed, line up the timing marks on the timing
gears by rotating the crankshaft. This will position the #1 piston at top dead center (TDC). Next
remove the camshaft timing chain sprocket, the timing chain and the camshaft retaining plate if
equipped. Remove all lifters and reinstall the cam sprocket to serve as a handle. Slowly and
carefully “roll” the camshaft out of the engine. Note: Excessive force is not required to
remove a camshaft. If the camshaft does not come out easily, stop! Look for obstructions,
such as a fuel pump rod, distributor gear, etc. Do not force the camshaft; something is
holding it in the block.
3. Once the camshaft is removed, pull the bottom timing gear off of the crankshaft snout. In many
cases you will need a gear puller to remove the crank sprocket. It usually has an interference fit,
which may make it difficult to remove without the proper tool. Be careful not to damage the
threads in the end of the crankshaft.
4. Now is the time to inspect all of the old camshaft related components (timing chain set,
distributor gear, etc.) for abnormal or excessive wear. For example, using an excessively worn
INSTRUCTIONS