COMP Cams 9673T9 LS Timing Sets User Manual

Page 3

COMP Cams

3406 Democrat Rd.

Memphis, TN 38118

Phone: 901.795.2400

Part #COMP4-134

Revised 6/24/13

Toll Free: 1.800.999.0853
www.compcams.com

8. If your timing set uses a Hex-A-Just, insert

the Hex-A-Just offset timing bushing into the
camshaft sprocket hub. If it does not, skip to
#10. Using a ¼” hex wrench, rotate it so the
timing mark on the bushing points outward
and away from the center of the hub.

9. Install the camshaft thrust bearing. Install so

that the black side of the bearing is toward
the block! This is extremely important and
improper installation will cause sever wear.
Note that billet timing sets have the thrust
bearing pre-installed.

10. Mount the camshaft sprocket by first looping

the timing chain over the camshaft sprocket,
with the Hex-A-Just bushing installed, if
included. Next align the camshaft and
crankshaft timing marks and loop the chain
around the crankshaft sprocket and install
over the camshaft timing pin. Loosely install
the camshaft bolt(s) to hold the camshaft
sprocket in place.

11. If using a Hex-A-Just style timing chain set

now is the time to adjust the camshaft timing.
If not using a Hex-A-Just style timing chain
skip to the next step. To adjust you must
ensure the rocker arms have all been loosened
so there is no load on the camshaft. Failure to
do so will split the Hex-A-Just bushing! Ensure that your camshaft bolt(s) is (are) still loose.
Adjust the Hex-A-Just bushing to the desired timing setting.

12. It is highly recommend that you use a degree wheel to ensure your camshaft is installed

correctly! Failure to properly install your camshaft correctly may cause catastrophic engine
failure, as the pistons and valves may crash. Once you are sure your intake centerline is
where you desire it, it is recommended you also check your piston to valve clearance,
especially if also installing a new camshaft.

13. Torque camshaft bolts to 26lb./ft. for three bolt camshafts, using loctite. Single bolt camshafts

are torque to yield and must be replaced with a new bolt. Using a new bolt first torque to
55lb./ft. and add an additional 50 degrees, using Loctite.

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