Comp-cams Camshaft Installation and Degreeing Procedure User Manual download pdf

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

1 2 3 4 5 6 ... 11 12

Summary of Contents

Page 1 - INSTRUCTIONS

1 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

Page 2

10 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 rotation) u

Page 3

11 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 increments,

Page 4 - Checking Camshaft Endplay

12 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 Never cont

Page 5

2 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 distributor g

Page 6 - Rocker Arm Clearance

3 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 8. Reinstall

Page 7 - Piston to Valve Clearance

4 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 manner until

Page 8

5 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 As mentioned,

Page 9 - Intake Centerline Method

6 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 Non-Adjustabl

Page 10

7 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 Valve Springs

Page 11 - Common Mistakes

8 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 permanently a

Page 12

9 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 A crank sock

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