INSTALLATION INSTRUCTIONS

5

ADJUSTING THE SLIP COLLAR

Chevy Model, PN 8562 only

TosettheadjustmentoftheslipcollaronthePN8562Distributor,MSDoffersaspecialtool,the3-In-1

Distributor Set Up Tool, PN 8599. If the tool is not available, follow this procedure.

1. Loosen the slip collar and insert the distributor into the engine until it bottoms out against the oil

pump drive.

2. After it bottoms out, raise the distributor 0.010" - 0.030" then slide the slip collar down into position

and tighten it.

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 and

pull the distributor out. The gear pattern will show on the grease. The proper mesh will leave an even

patterninthemiddleofthegear.Adjusttheslipcollartoobtainthecorrectmesh.

Checking the Oil Pump to Distributor Shaft Overlap

The proper overlap between the distributor shaft and the oil pump shaft is very important. The tounge of

the distributor shaft should fit into the groove of the oil pump shaft by at least 1/4". To check this:

1. Measure the distance between the

base of the slip collar to the tip of the

distributor shaft (Figure 9).

2. Using a straight edge, measure the

distance from the intake manifold

distributor flange to the top of the

oil pump shaft (Figure 9).

3. 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 shaft is required.

Figure 9 Measuring Oil Pump Shaft Overlap.

4. Rotate the shaft 180° and insert the advance stop bushing pin into the small hole on the advance

plate (Figure 8).

5. Install the locknut and washer to the advance stop bushing pin.This locks the advance in place.

Do not overtighten.

6. Install the drive gear and roll-pin.