Installing the Advance Mechanism

Click here for Trouble shooting: Timing Jitter and End Play


1. Install two of the brass bushings  in the cavity of the cam shaft on the right hand side, under the chrome cover.

NOTE: Clean out all debris, rust etc. from the cavities to ensure a proper fit of the bushings.

2. Install the other brass bushing in the cavity of the cam shaft on the left side, under the chrome cover.

3. Install one of the three locating pins in the hole of the cam shaft on the right side.

4. Remove the weights from the advance mechanism.

5. Install the advance mechanism on the cam on the right side. There is a slot in the advance mechanism that lines up with the locating pin.

Note: This pin is sometimes too long and presses on the inner bushing distorting it enough to cause binding of the advance rod. File this pin down to eliminate that potential problem.

Note: There is also a pin in the advance mechanism plate used to secure the locating pin that sometimes protrudes and interferes with the nut that holds the advance mechanism in place. File this pin down as well.


6. The advance mechanism is held in place with the large nut. Install the nut with the lip facing outside

7. Using a hammer and punch, tap the nut all the way around to tighten it in place.

8. Reinstall the weights and springs in the advance mechanism.

9. Install the second locating pin in the right side of the advance rod.

10 Attach the slotted disk to the advance rod on the end that has the shortest length of finished shaft, engaging the locating pin..

11. Install the advance rod through the hole in the cam shaft from the right side, engaging the slots in the disk with the little tabs on the weights.

12. Install the PAMCO plate in the left side, securing it with the hold down screws. Position the plate at the mid point of the upper left slot.

13. Install the third locating pin in the advance rod on the left side.

14. While holding the advance rod in place on the right side, install the PAMCO rotor and large washer on the advance rod, left side, and secure with the lock washer and nut.

Click HERE TO test for free movement of the advance mechanism:

15. Connect the black wire to frame ground, using an appropriate terminal.

16. Connect the red wire to either terminal of the coil, along with the red/white wire that was connected to the stock coil. The orange wire is not used.

17. Connect the green wire to the other coil terminal.

18. Start the engine and use a strobe timing light to check the timing.

19. Adjust the plate until the timing mark on the alternator rotor is in the "F" zone, marked on the stator.

20. Check that the timing advances as you increase the RPM's of the engine.

21. Adjust the springs on the advance mechanism to obtain an advance in timing with an increase in RPM's.