COMP Cams 3125KT Bolt Adjustable Timing Set - Manual

Part #229
Revised 7/6/05 1
Competition Cams, Inc
3406 Democrat Rd.
Memphis, TN 38118
(901)795-2400 FAX (901)366-1807
www.compcams.com
Inserting Offset Bushing
(Figure 1)
Tools and supplies needed:
1. 5/16” Hex Bit Socket or Hex Wrench
2. Torque Wrench
3. Hammer
4. 1/4” Hex Bit Socket or Hex Wrench
5. Sleeve to fit over crankshaft for installing crankshaft sprocket
6. Degree Wheel (optional, but recommended)
7. Assembly Lube or Camshaft Lube
8. Thread Locking compound
9. Cam button (optional, but recommended)
Chrysler 383-440 3 Bolt Adjustable Timing Set
Part # 3125KT
Thank you for choosing COMP Cams® products; we are proud to be your manufacturer of choice.
Please read this instruction sheet carefully before beginning installation, and also take a moment to
review the included limited warranty information.
Note: The installation procedures which follow assume that the engine has been disassembled and
cleaned as it would be for a normal timing set change.
1. Prepare the Engine. Loosen
all rocker arms so that the
camshaft can rotate freely.
2. Clean Everything! Make sure
that the engine mounting surfaces
and timing set components are as
clean as possible. The life of the
chain and sprockets depend on it.
3. Mount the Crankshaft Sprocket. Select the appropriate keyway for the camshaft timing baseline
desired. We recommend the Standard Timing position, which uses the round timing mark and round
keyway mark. Carefully tap the sprocket onto the crankshaft using a sleeve to protect the sprocket.
Make sure that the sprocket is fully seated on the crankshaft. Rotate the crankshaft until the appropriate
crankshaft sprocket timing mark is in the 12:00 position. Make sure
that the number one piston is at top dead center.
4. Install the Thrust Bearing. Install the Thrust Needle Bearing on
the back side of the camshaft sprocket with the Black Side of the
Bearing toward the Sprocket. Installing the Silver Side toward the
sprocket will cause the sprocket to Wear Out!
5. Insert the Timing Bushing. Insert the offset bushing (with the
Hex hole) into the slot in the camshaft sprocket hub. Rotate it with a 1/4”
Hex Wrench so that the timing mark on the bushing points away from the
center of the hub (Figure 1). The adjustable Timing Bushing is infinitely
adjustable so you can fine adjust your engine’s CAMSHAFT TIMING to EXACTLY WHERE YOU
WANT IT.
6. Mount the Camshaft Sprocket. Loop the chain over the camshaft sprocket. Align the camshaft
and crankshaft timing marks and loop the chain around the crankshaft sprocket. Lift the camshaft
sprocket into place on the camshaft, with the Thrust Bearing and Bushing in place. Be sure that the
timing mark aligns with Socket Head Cap Screws supplied. Install these bolts slightly loose.
INSTRUCTIONS