ALWAYS SECURE
America's Oldest Speed Shop ® 800.979.0122 Lincoln, NE
Filters
Menu
Contact
Help Center
x
x
How to Contact Us

U.S.Order Line:

800.979.0122

(CST) 7am - 10pm

Race and Rod Tech Support

Mon-Fri 8am - 5pm

Canadian Order Line:

855.313.9180

International Order Line:

1.402.323.3200
Since 1952
Menu
x

MSD 8531 MSD/Accel Iron Chevy Distributor Gear

MSD 8531 MSD/Accel Iron Chevy Distributor Gear

Click image to enlarge

Details

Reviews

Q & A

What's in the Box

MSD is looking to Rev up your ride with the Rev'n Rebate 2015. From July 1st through August 31st, Purchase $250 - $500 of any MSD product and get up to $50 back. Get all the details from MSD now!

A distributor’s performance is only as good as its drive gear. MSD Ignition has put a great deal of effort into researching and testing a variety of metallurgical compositions, heat treating and coatings to provide you with a durable, accurate and strong distributor gear. MSD engineers have built test fixtures and spent hundreds of hours testing and evaluating the metallurgy of these gears. The result is a special iron alloy gear that is treated to a low-friction coating process. To you this means long life, an easy break-in period and reliable performance!

  • Increased outer hardened layer thickness (RC 55-60)
  • Micro polished surface for smooth contact
  • Proprietary formulated ductile iron
  • Melonite QPQ coated reduces friction and initial wear
  • Interstitial carbide concentration improves wear resistance

Specs

  • .500" I.D.
  • Fits MSD and Accel Chevy Distributors

Customer Reviews

Rated 4 out of 5 by 1 reviewers.
RATING BREAKDOWN
1 reviews
5 Stars
0
4 Stars
1
3 Stars
0
2 Stars
0
1 Star
0
RECOMMEND THIS PRODUCT:

Racing55
Verified Purchaser
South Dakota, USA

Msd distributor gear.

April 02, 2015
This gear is for msd distributors only with the .500 inch shaft most all other distributors have smaller shafts so be sure to order the correct one for your application. This gear works well and shows very little wear after one season of racing also keep in mind only run the iron gear on flat tappet cams you must run a bronze gear with a roller cam.
Yes, I recommend this product.
Full Size Image

Was this review helpful? 0 0

Page 1 of 1

Product Q&A

2 questions : 2 answers

1 answers

distributor gear I am using a 1992 vortec small block chevy (350) in a 79 off road jeep swap. I am going to used the HEI chevrolet distributor after changing the intake from tbi to carb. Do I need to change the distributor gear to melonized? Or can I run stock gear? Thank you

bocephus
July 27, 2014

distributor gear I am using a 1992 vortec small block chevy (350) in a 79 off road jeep swap. I am going to used the HEI chevrolet distributor after changing the intake from tbi to carb. Do I need to change the distributor gear to melonized? Or can I run stock gear? Thank you

Answers

July 29, 2014
Travisp
Many factory roller cams will accept a steel gear but to verify you won’t lose the cam we recommend a melanized gear or roller cam specified gear for the distributor.
1 answers

I am using a Chevy steel "Hot Cam" roller cam in my '88 Chevy 350. Is this the gear I need for that setup?

February 06, 2011

I am using a Chevy steel "Hot Cam" roller cam in my '88 Chevy 350. Is this the gear I need for that setup?

Answers

February 10, 2011
Waymon
No the 8531 - MSD Steel Distributor Gear, Chevy, Item #: 5478531, will not work for you. The Chevy HOT cam uses a normalized iron distributor gear that does not require a bronze gear. That means that you should be able to use your stock distributor gear.
Page 1 of 1

You may also be interested in:

Distributor Gear Shim Kit
(Part #54526140)
                        

These shims are used to take up the slop between the distributor gear and the distributor housing. Allows you to set the endplay of your distributor shaft. Designed to work with distributors having a shaft diameter of 1/2". The gear must be removed to install these shims.

Includes two .010", two .020" and one .053" shim.

Moroso 26150 Chevy Distributor Shim Kit
(Part #54526150)
                        

Eliminates oil pump bind and spark scatter when using a distributor in an engine with milled heads or decks. Shims fit between the intake manifold and your distributor allowing you to properly set gear mesh. Made from leak-free, high impact nylon.

  • Eliminates oil pump bind and spark scatter 
  • Prevents wiping out your distributor gear
  • Made from high impact nylon to exact GM gasket specs
  • Kit contains 3 sizes; .030", .060" & .100"
Chevy Distributor Clamp
(Part #7209126)
                        Extra heavy duty distributor clamp. Gives more hold-down area for your Small Block Chevy (SBC) or Big Block Chevy (BBC). 
                    
MSD 8471 Chevy Bronze Distributor Drive Gears
(Part #5478471)
                        

MSD is looking to Rev up your ride with the Revn Rebate 2015. From July 1st through August 31st, Purchase $250 - $500 of any MSD product and get up to $50 back. Get all the details from MSD now!

Bronze distributor drive gears for Small Block and Big Block Chevy and V6 Chevy

  • 0.5" Diameter Shaft
  • AMPCO 45 Aluminum Bronze Containing 5% Nickel
  • Less Prone to Wear
  • Does Not Harm Cam
  • Small Block Chevy
  • Big Block Chevy
  • V6 Chevy

 MSD Rebate (Link)

Item Details

Chevy V8, .500" I.D.
Dist Gear Chev.490 Brnze
(Part #91511990)
                        

Use bronze distributor gears to eliminate gear galling and breaking. Recommended for use with performance steel alloy and billet cams.

For OEM Chevy distributors and Vertex magnetos with a .490" shaft.

Item Details

Chevy V8, .490" I.D.
MSD 8561 Iron Melonized Distributor Gear for Chevy Marine Distributors
(Part #5478561)
                        

MSD is looking to Rev up your ride with the Rev'n Rebate 2015. From July 1st through August 31st, Purchase $250 - $500 of any MSD product and get up to $50 back. Get all the details from MSD now!

A distributor’s performance is only as good as its drive gear. MSD Ignition has put a great deal of effort into researching and testing a variety of metallurgical compositions, heat treating and coatings to provide you with a durable, accurate and strong distributor gear. MSD engineers have built test fixtures and spent hundreds of hours testing and evaluating the metallurgy of our gears. The result is a special iron alloy gear that is treated to a low-friction coating process. To you this means long life, an easy break-in period and reliable performance!
Features
  • Increased outer hardened layer thickness (RC 55-60)
  • Micro polished surface for smooth contact
  • Proprietary formulated ductile iron
  • Melonite QPQ coated reduces friction and initial wear
  • Interstitial carbide concentration improves wear resistance and running properties

For use with aftermarket distributors with .500" shaft diameter with hydraulic roller camshafts