MSD 8410 Installation

MSD GM HEI Rotor

PN 8410

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Parts Included:

1 - HEI Rotor

The MSD GM HEI Rotor will install on stock GM HEI Distributors and the MSD Pro-Billet HEI Distributor.

1. Remove the distributor cap. Remove the two screws on the side of the rotor and pull the rotor off.

2. Inspect the distributor advance mechanism, springs and weights for wear or damage.

Note: If the distributor has aftermarket weights and bushings, interference between the bottom of the

rotor and the bushing may result. To eliminate the chance of interference, remove approximately 1/10" to 1/8" of the bushing (Figure 1).

Figure 1 Modifying Aftermarket Weight Bushings.

3. For improved protection against spark arc-through, apply a small amount of MSD Spark Guard in the rotor well area (Figure 2). This is not necessary, just added protection.

4. The Rotor will only install one way. Make sure the aligning slot lines up with the rotor plate mounting tab (Figure 2). Tighten the screws and install the cap and wires.

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Figure 2 Installing the MSD HEI Rotor.

Service

In case of malfunction, this MSD component will be repaired free of charge according to the terms of the warranty.

When returning MSD components for warranty service, Proof of Purchase must be supplied for veriﬁcation. After the warranty period has expired, repair service is based on a minimum and maximum fee.

All returns must have a Return Material Authorization (RMA) number issued to them before

being returned. To obtain an RMA number please contact MSD Customer Service at 1 (888) MSD-7859 or visit our website at www.msdperformance.com/rma to automatically obtain a number and shipping information.

When returning the unit for repair, leave all wires at the length in which you have them installed. Be sure to include a detailed account of any problems experienced, and what components and accessories are installed on the vehicle. The repaired unit will be returned as soon as possible using Ground shipping methods (ground shipping is covered by warranty). For more information, call MSD at (915) 855-7123. MSD technicians are available from 7:00 a.m. to 5:00 p.m. Monday - Friday (mountain time).

Limited Warranty

SD warrants this product to be free from defects in material and workmanship under its intended normal use*, when properly installed and purchased from an authorized MSD dealer, for a period of one year from the date of the original purchase. This warranty is void for any products purchased through auction websites. If found to be defective as mentioned above, it will be repaired or replaced at the option of MSD. Any item that is covered under this warranty will be returned free of charge using Ground shipping methods. This shall constitute the sole remedy of the purchaser and the sole liability of MSD. To the extent permitted by law, the foregoing is exclusive and in lieu of all other warranties or representation whether expressed or implied, including any implied warranty of merchantability or ﬁtness. In no event shall MSD or its suppliers be liable for special or consequential damages. *Intended normal use means that this item is being used as was originally intended and for the original application as sold by MSD. Any modiﬁcations to this item or if it is used on an application other than what MSD markets the product, the warranty will be void. It is the sole responsibility of the customer to determine that this item will work for the application they are intending. MSD will accept no liability for custom applications.

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FRM30876 Revised 11/11 Printed in U.S.A.