COMP Cams 10254 Ford Modular V8 Camshaft Gear Set - Manual (Page 2)

COMP Cams®
3406 Democrat Rd.
Memphis, TN 38118
Phone: (901) 795-2400 Fax: (901) 366-1807
www.compcams.com
Part #COMP4-169
Revised 3/29/13
2. Making adjustments – Using a wrench to prevent the camshaft from turning, loosen the
six (6) adjustment bolts to allow the center hub of the gear to rotate – note that continuing
to hold the cam with a wrench will prevent it from turning once the adjuster bolts are loose
– this will help to prevent valve train damage. Use the wrench to rotate the cam to the
desired setting (the gears have a 0º - 6º range of adjustment for either advance or retard),
and tighten the adjusting bolts on both camshafts. Remember that it is absolutely
necessary to adjust both camshafts when changing your cam timing – for example, if
you adjust the left camshaft to 4° advanced, you must also adjust the right camshaft to
4° advanced! Failure to do so will result in severe engine damage.
Rotating the camshaft clockwise will advance the cam timing, and rotating it
counterclockwise will retard the cam timing. Be sure to degree the cams whenever you
make an adjustment in order to verify that your camshafts have been set as intended.
Caution! – when adjusting your camshaft timing, be sure to verify that you have
adequate valve to valve and piston to valve clearance – severe engine damage will
result from inadequate clearance.
3. Final assembly – Once both cams have been properly adjusted, remove each adjusting bolt
one at a time. Apply a small amount of thread lock to each attaching screw, and torque to
125 in-lbs (10 ft-lbs.)
Loctite must be used on all hardware!
Note: the adjusting bolts are made extra long in order to facilitate ease of adjustment
– it is critical that you verify that you have adequate running clearance for the bolts –
if not, you must grind the bolts for clearance before starting your engine, or severe
engine damage may result.