Crankshaft timing gear options – COMP Cams 9673T9 LS Timing Sets User Manual
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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
14. Recheck that your selected timing marks are aligned
“dot to dot” at 6:00 on the camshaft gear and 12:00
on the crankshaft gear.
15. Lubricate the timing set with fresh engine oil. Also
ensure the engine oil has a clear path to the timing
set through the lifter valley oil drain back holes.
16. Install oil pump drive, if it is separate from your
crankshaft gear, by aligning the crankshaft keyway
and install until fully seated against the timing gear.
Again using a sleeve to protect the oil pump drive
while seating it on the crankshaft.
17. If using a double roller chain, make sure to install
the supplied spacers while installing the oil pump.
The driver’s side space MUST be installed
correctly. Check for proper alignment by ensuring
the hole for oil flow is proper aligned and isn’t
restricting oil flow before final installation, as an
improper installation will cut off oil flow and could
damage your engine.
18. Reinstall the oil pump, remembering to make sure
the pickup tube is reattached and the o-ring is
properly seated.
19. Reinstall your oil pan, timing cover (ensuring no
interferences are found), and water pump.
Crankshaft Timing Gear Options:
COMP Cams
®
Billet Steel 9 Keyway Timing Sets are the most
reliable units available. They give the installer the ability to fine-
tune the powerband of the cam by allowing the cam to be
positioned from 0 to 8-degrees advanced or retarded, in 2-degree
increments. The “A” crankshaft keyways are to be used when
intending to advance the cam and by how many degrees desired.
Likewise the “R” labeled crankshaft keyways are to retard the
camshaft, and by how many degrees desired. Remember to use
the corresponding timing mark on the crank gear. Note: The
camshaft angle is half the crankshaft angle, therefore the
camshaft will correspondingly advance or retard 1, 2, 3 or 4-
degrees. For example, to advance the cam 1
° use the “A2”
crankshaft keyway, remembering you now must use the “A2”
timing mark to line up your cam and crank gears.
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