COMP Cams 3122 TB Ford Timing Set - Manual (Page 2)

The following instructions begin after the timing cover and old timing set have been removed.
Installation Instructions
1. Clean everything! Make sure that the engine mounting surfaces and your new timing set have been
thoroughly cleaned with a good solvent.
2. If you are using a timing set with three keyways, select the appropriate keyway for your camshaft
timing specifications. COMP Cams ® recommends the standard timing position for most applications.
This position uses the round or “O” timing and keyway marks. Standard Timing Location: This is the
same as original O.E.M. setting. Use keyway and crankshaft gear tooth marked “O”.
ƒ 4 Degree Advance: Use keyway and crankshaft tooth marked . Note: The or advanced
position should not be used without degreeing the camshaft. Many camshafts have the proper
advance built in. Advancing the cam will reduce intake valve to piston clearance and increase
exhaust piston to valve clearance.
ƒ 4 Degree Retard: Use keyway and crankshaft gear tooth marked . Note: The or
retarded position should not be used without degreeing the camshaft. Many cams have the
proper advance built in. Retarding the cam will reduce exhaust valve to piston clearance and
increase intake piston to valve clearance.
3. Install your lower timing gear on the crankshaft making sure that the timing marks are facing out
toward you.
4. Now that the lower timing gear has been installed check the timing mark alignment in your engine
manual. Rotate the crankshaft using your crankshaft socket until the timing mark on the gear is in
the proper position (12 o’clock). For 240-300 6 cyl. see Note 1 before proceeding!
5. If your engine is equipped with a camshaft retaining plate or thrust plate, it should be installed at this
time. Note that many Ford thrust plates are marked “back – bottom”. Before final installation check to
make sure that the thrust plate is fitted correctly. 351W owners see Note 2 before proceeding!
6. Temporarily install your camshaft timing gear and rotate the camshaft until the timing mark on the
camshaft gear is in the proper position per your engine manual instructions (6 o’clock).
Tools and supplies needed:
1. Basic hand tools as required for your particular camshaft and
balancer bolts
2. Torque wrench
3. Pro Cam Lube (part #153 or #154) or suitable replacement
4. Camshaft Degree Kit (part #4796 including degree video)
5. Crankshaft Socket (part #4798 for Ford 302-351W, 429-460)
6. Thread locking compound
7. Engine repair manual for your particular engine