GM STYLE HEI LARGE CAP DISTRIBUTORS

FOR FORD AND AMC V8 ENGINES

OLD DISTRIBUTOR REMOVAL

STEP 1

Disconnect all wire connections at the distributor. Locate

the spark plug wire on the original distributor cap that is

used to set engine timing. See service manual for this

location. Mark the distributor cap and distributor

housing at this spark plug wire position.

STEP 2

Turn the engine crankshaft in the direction of rotation

until the timing mark lines up with the top dead center

(TDC) mark on the timing tab. See service manual for

these locations.

STEP 3

Remove the distributor cap from the distributor. Do not

remove the spark plug wires at this time. Make sure the

rotor blade points to the mark on the distributor housing

(from Step 1). If it does not, repeat Step 2 until the timing

mark lines up (again) with the TDC mark on the timing tab.

NOTE: Once you are finished with Step 3, DO NOT turn

the crankshaft until the new distributor is installed.

STEP 4

Note the direction the rotor is pointing as well as the

location of the vacuum canister. Remove the distributor

hold down clamp and remove the distributor from

the engine.

NEW DISTRIBUTOR INSTALLATION

STEP 1

To insure you have sufficient clearance for the new, larger

diameter housing, place the new Mallory distributor into the

engine, watching for possible points of interference.

Position the vacuum chamber in a manner that allows the

hose to easily be accessed. You may have to do some

minor clearance work on accessory brackets, relocate line

or hoses, etc. It may help to remove the distributor cap

during this stage. After you have checked for clearance,

remove the distributor from the engine.

SPECIAL FEATURE

This distributor has been designed to allow for the cap to

be installed in 4 different positions to allow for ease of

installation and additional clearance.

STEP 2

Remove the cap from your Mallory distributor.

STEP 3

Lower the distributor housing into the engine positioning

the vacuum chamber in the same position as in step 1.

Select the terminal on the distributor cap that the rotor is

FORM 1511M 06/04

pointing at and designate that as number 1. This can be

any terminal in the cap. Mark the cap and them install it on

your Mallory distributor.

STEP 4

Install the distributor clamp and tighten it enough to put

some drag on the distributor flange, but still allow for some

rotation to adjust the timing.

STEP 5

Remove the number 1 spark plug wire from the old cap and

install it on your new cap on the terminal you designated as

number 1 cylinder location in Step 3. Continue to install

the balance of the wires, one at a time and in rotation until

all 8 wires have been transferred to the new cap.

NOTE: If the distributor you are replacing was equipped

with the older design female style towers on the distrib-

utor cap, you will need to install the proper boots and

terminals, using Mallory HEI Boot and Terminal Kit # 669

or install a new set of spark plug wires such as

Mallory’s Pro Sidewinder Series.

STEP 6

Connect the lead from the distributor housing into the

connector located on the distributor nearest the cap itself.

To power the distributor, run a 14 gauge automotive grade

wire (non-resistance type) from the ignition switch (12 volt

switched power) to the distributor cap terminal marked

“BAT +”. Use the supplied female spade connector on the

distributor end of the wire. If you choose to run a tachome-

ter that requires a coil - signal, you may connect that wire

to the open distributor cap terminal marked “Coil – “.

STARTING THE ENGINE

CAUTION: Be sure all tools, wires and miscellaneous

objects are clear of moving engine parts and extreme

heat before starting the engine.

STEP 1

Check and clean, or replace spark plugs. If replacing

spark plugs, use types recommended by the engine

manufacturer.

STEP 2

Connect timing light and start the engine. If the

engine fails to start, rotate the distributor clockwise or

counterclockwise until the engine starts. Do not exceed

more than ten degrees of distributor housing rotation in

either direction.

STEP 3

Set timing as recommended by the engine manufacturer,

then tighten the distributor hold down clamp.

INSTALLATION INSTRUCTIONS

www.mrgasket.com

1

MALLORY IS A DIVISION OF THE MR. GASKET PERFORMANCE GROUP

10601 MEMPHIS AVE. #12, CLEVELAND, OH 44144

216.688.8300

FAX 216.688.8306

FORM 1511M

06/04

Made in U.S.A.

Printed in U.S.A.