Why are my springs sagging after the rebuild?
Leaf Spring Tech Articles, Videos, and More
Since 1937, we have manufactured leaf springs for the automotive industry, restorations, street rods, NASA, and even Oscar Meyer Wienermobiles. If you have a question about leaf springs, odds are we answered it below or would be happy to help.
Browse dozens of tech articles, videos, and answered questions from our Ask The Spring Guru page.
Ride Height Difference
How do I know the springs I ordered will sit my car with the right stance?
Designing Special Trailer Springs
The leaf springs for my trailer are well beyond operational condition. Do you have original specs for my trailer springs or should I measure them myself?
Why Are Spring Eye Bushings Wider Than The Spring?
The bushings are wider than the spring. Why is this?
Never Weld To A Spring
Some guy said you can replace a U-Bolt by welding his product to the main plate of a spring. It seems like a bad idea. Is it?
How Important Is The Spring Saddle?
How should I fix my straight axle bump steer?
Studebaker Truck Springs
I saw a spring where the leaves were stacked in an odd manner. Does the stacking order matter with leaf springs?
Adding Leaves Vs Rearching or Replacing Leaf Spring
Mike, The car in question is a 1954 Studebaker Champion Regal 4-door, six cylinder 169 engine. I would like to raise the back of the car 1 to 2″, and I am considering adding a leaf on each side since I have to pull the rear springs off anyway for some work. – Ron Ron, […]
Is There A Trade Off Between Comfort and Handling? (Also, Diagnosing a Leaning Bonneville)
Q – I’m interested in new springs for my 64 Bonneville. I bought new springs from XYZ Company 2 years ago and I’m not happy with the results. When I was having them installed the mechanic said one of the rear springs was bad so I got a replacement. I wanted a pair, but they […]
Keep Your U-Bolts Properly Torqued! Broken Center Bolt
Know about your U-bolt torque. It’ll save your springs!
If Not Rear Springs, What Causes A Leaning GTO?
Mike, I purchased a set of new rear springs from you for my 1967 GTO and when I put them in the car leaned to the driver’s side about 3/4 of an Inch. The lean was there with the old springs but I thought the new springs would level it out. I even switched the […]
Grease Between Leaves
Q – Mike: I really enjoyed the opportunity to talk with you during the Silver Springs car show this past weekend. I have also looked at several of your articles on your web site and found them to be very interesting and informative. I also appreciate the T-shirt offer regarding the a discussion we had […]
How Do Lowering Springs Affect Ride Quality?
Mike, I want to lower my ’54 Ford but still keep it riding good, can this be done? -Jerry Jerry, Whenever a vehicle is lowered, there is a reduction in the amount of suspension travel. Because of this, the spring rate (how much weight it takes to deflect a spring one inch) is increased. Suspension […]
Diagnosing Weird Arch In Spring: Missing Leaves
Dear Mike, I have a 1948 Chevrolet Fleetline Aerosedan two-door; lowered three Inches in the front by one Inch shorter coils and two Inch dropped spindles, and lowered four Inches in the rear by two Inch lowered reverse eye flattened springs and two Inch lowering blocks. My problem is this: the front and rear ride […]
Greasing Leaf Springs
Mike, What effect does grease between the leaves of a pre-50 spring have please? Besides stopping them squeaking. Kind Regards, Mike Mike, If the springs are really pre-1950’s, the grease will help them slide against each other easier and help stop the squeaking. This means springs from the pre-1950’s, not a vehicle from pre-1950’s. Since […]
Lowering Blocks
Q -Mike, I just bought a ’54 Chevy 2 door. It has 3″ lowering blocks and is – in my opinion- exactly 1″ too low in the back. I’m really not a bubble gum things together kind of guy and I believe, in most cases, lowering blocks are a version of Bazooka Engineering. Agree? Aluminum […]
Choosing Correct Springs For Your ’71 Camaro
Good afternoon Mike, I recently purchased a 1971 Chevy Camaro with a 350 which someone had installed air shocks and what appears to be a new set of leaf springs, 4 possibly 5 leaf on it. I replaced the air shock with a set of standard premium gas charged ones. Unfortunately the back end of […]
Hudson Street Rod
Hello Mike , I am asking for help with a problem I am having on a 1930 Hudson Street Rod. I mounted a Ford Mustang rearend on the original springs, and the springs flatten out with the weight of the car, no arch. With the spring flat the rear shackle hits the fender and wont […]
Lowering a ’67 Chevy Nova Wagon
Mike, Okay you got my attention. I just read all of your website and now I am thoroughly confused. But I take your opinion over all the others because you are an expert. Here’s my dilemma. I have a ’67 Chevy Nova Wagon. It has all original, factory stock suspension, front and rear. It has […]
Spring Width For 38 Plymouth
I have a 1938 Plymouth and I have heard that I should replace the springs that are 1.75-inches wide with ones that are 2.5-inches wide. Can the springs be made with narrow eyes so the existing hangers can be used? – Rick Rick, Yes, springs can be made wider with narrower eyes fit the hangers. […]
