EATON Detroit Spring

The leading manufacturer of leaf and coil springs for the street rod and restoration automotive industries

We Help Maintain American Icons by Manufacturing Leaf and Coil Springs Right Here in America

Phone: 1 (313) 963-3839
Fax: 1 (313) 963-7047

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      We have been manufacturing springs for American vehicles for over 80 years. Our process and expertise has been continuously refined and improved over the century and our Spring Tech section reflects some of that specialty knowledge.

      Browse our many articles, watch videos produced in partnership with AutoRestoMod, and learn all about your spring suspension here.

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  • Click to Call Now: 1 (313) 963-3839
MENUMENU
  • Home
  • Products
    • Suspension Parts
      • Leaf Springs
      • Coil Springs
      • Shocks
      • Attaching Parts And Hardware
      • Installation Kits
      • Leaf Spring Shackle Replacement Kits & Parts
    • Street Rod Suspension Parts
      • Mustang II Front End Springs
      • 48 Inch Truck Springs
    • Allstate - Chrysler
      • Allstate
      • American Motors
      • Bricklin
      • Buick
      • Cadillac
      • Chevrolet
      • Chevrolet Truck
      • Chrysler
    • Daimler - Ford
      • Daimler
      • DeSoto
      • Dodge
      • Dodge Truck
      • Edsel
      • Ford
      • Ford Truck
    • GMC - Jeep
      • GMC
      • Honda
      • Hudson
      • Hudson Truck
      • Hummer
      • International
      • Jeep
    • Kaiser Darrin - Nissan
      • Kaiser Darrin
      • Kaiser-Frazer
      • LaSalle
      • Lincoln
      • MAHINDRA
      • Mercury
      • MG
      • Nash
      • Nissan
    • Oldsmobile - Rambler
      • Oldsmobile
      • Plymouth
      • Plymouth Truck
      • Pontiac
      • Rambler
    • Sterling - Willys
      • Sterling
      • Studebaker
      • Studebaker Truck
      • Toyota
      • Willys
    • Request A Custom Quote
    • Search For Parts Here
  • Spring Tech
    • Learn About Leaf & Coil Springs
      • Spring Tech Articles
      • Tech Questions
      • Spring Tech Videos
      • Featured Elsewhere
      • EATON Detroit Spring Podcast
      • Buy Ford Manuals
    • Spring Tech 101

      We have been manufacturing springs for American vehicles for over 80 years. Our process and expertise has been continuously refined and improved over the century and our Spring Tech section reflects some of that specialty knowledge.

      Browse our many articles, watch videos produced in partnership with AutoRestoMod, and learn all about your spring suspension here.

    • Browse By Topic
      • Leaf Springs
      • Coil Springs
      • Attaching Parts
      • Ride Height & Stance
      • Ride Quality
      • Manufacturing Springs
      • Replacing Springs
      • Modifying Springs
      • Ordering Springs
  • About Us
    • About EATON Detroit Spring
    • Customer Showcase
    • Send Us Photos Of Your Ride!
    • Free Stuff For Car Shows!
    • Facebook
    • YouTube Channel
      • Spring Tech Videos
  • Order Here
    • Lookup & Purchase Your Vehicle's Parts
    • Request A Quote
    • Email Our Sales Team
    • Dealer Information
  • Find Parts That Fit Your Vehicle
  • Click to Call Now: 1 (313) 963-3839

We Help You Pick The Right Springs: 1971 Trans Am Leaf Spring

Mike,

I am currently restoring a 1971 TA. I plan on replacing the rear springs but am having difficulty determining which ones are correct for my car.

First off, all 1971 TAs came with the 455HO motor and F60x15 tires. When I do a search on your website using “Trans Am” under body style, the springs that come up are ML599 (left) and ML1147 (right).

However, when I search using “Firebird” under model and blank under body style I get a much longer list. This list includes the two above-mention springs more than once each.

The ML559s are listed as: – Engine Size 455, Left – 4 leaf, Rate 126 Lbs. and also as – Engine Size 350, 400, 455, Right – 4 leaf except F60x15 tires, Rate 126 Lbs.

The ML1147s are listed as: – Engine Size 455, Right – 4 leaf, Rate 126 Lbs. and also as – Engine Size 350, 400, 455, Left – 4 leaf except F60x15 tires, Rate 126 Lbs.

I called a Pontiac parts house and distributor of your springs. They said they stock the ML231s. These list on your site as: – Engine Size 350, 400, 455, Left – 4 leaf for F60x15 tires, Rate 126 Lbs. The counterpart to it for the right side appears to be ML3595. This lists as: – Engine Size 350, 400, 455, Right – 4 leaf for F60x15 tires, Rate 103 Lbs.

So, now I don’t know what is correct for my car. What is the difference between all of these springs?

Are they made specific for left and right sides?

Why are the ML3595s rated at 103 Lbs.?

Your help is greatly appreciated.

Pat

Pat,

Springs can be specific to a body style and/or an engine, this is why we ask for the information.

If you choose not to enter the required info or the wrong info, you could, and were, overwhelmed with meaningless info.

Do as we ask, we can make your life very easy when it comes to springs.

The listings shown for your TA, ML1147 for the right rear and ML559 for the left rear, are the springs you need. You will also need the Installation Kit, GC5003.

Not all of our distributors carry our full line of products. This is their choosing. If they do not carry our full line, a distributor may offer you a spring which they do carry. This may not be the perfect spring for your application.

-Mike

Filed Under: Tech Question Tagged With: Leaf Springs, Replacing Springs

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OEM Replacement & Custom Springs

  • Classic Cars Springs, Hot Rods, & More
  • Over 24,000 OEM Spring Blueprints
  • 166,000+ Stock Spring Applications
  • Design Staff Available For Custom Applications
  • Spring Experts Since 1937
  • Made in Detroit, Michigan
  • Made in the U.S.A.

How To Order Springs For Your Vehicle

To find the correct springs for your vehicle, you need to provide as much information about your car as possible. There is no such thing as a one-size-fits-all spring.

We try to make this easy by providing many ways to order your springs and send in as much information as possible:

  1. Call Us at 1 (313) 963-3839
    For Quickest Order Completion
  2. Fill Out Our Quote Request Form
    To Spell Out Details
  3. Browse For Parts Online
    To Browse By Make, Model, Body Style, & Engine Size

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WARNING:

This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
www.P65Warnings.ca.gov

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Locate & Connect To EATON Detroit Spring

EATON Detroit Spring, Inc.
1555 Michigan Avenue
Detroit, MI 48216
Phone: 1 (313) 963-3839
Fax: 1 (313) 963-7047
Email: inquiries@eatonsprings.com

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