8
CHECKING GEAR MESH:
It is recommended to check for proper gear mesh between the cam gear and distributor gear. To do this, coat
the distributor gear with moly grease and install the distributor. Next, crank the engine over several times.
Before pulling the distributor out, make sure the rotor is in the position that lines up with the original removal
mark. Then pull the distributor out and inspect the gear pattern shown on the grease. The proper mesh will
leave an even pattern in the middle of the gear. Adjust the slip collar to obtain the correct mesh.
Checking the Oil Pump to Distributor Shaft Overlap:
The proper overlap between the distributor shaft and the oil pump shaft is very important. The tongue of the
distributor shaft should fit into the groove of the oil pump shaft by at least 1/4". To check this:
Measure the distance between the base of the slip collar to the tip of the distributor shaft (
Figure 15
).
Using a straight edge, measure the distance from the intake manifold distrib utor flange to the top of the oil
pump intermediate shaft (
Figure 15
).
Take the two measurements and subtract them. The difference is the overlap. If there is not enough clearance
or too much clearance, a different oil pump intermediate shaft is required.
Figure 15
– Measuring Oil Pump Shaft Overlap
© 2018 Holley Performance Products. All Rights Reserved. Tous Droits Réservés.
199R11525
Revision Date: 5-14-18
FRM 34827
