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?
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.
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?
How To Remove Bushings
I tried burning out my bushings and it didn’t seem to work. I didn’t ruin my springs did I? How should I continue?
Which Springs Have The Right Capacity For My Truck?
How should I choose which spring has the right capacity for my vehicle?
Rearching C1 Corvette Springs
I have Corvette leaf springs with grooves. Can we restore them or should I have new ones fabricated?
Can I Use Rear Springs On The Front Of My Vehicle?
I installed rear springs at the front of my vehicle. It seems to be fine. Is there something I’m missing?
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. […]
Leaf Finish
Mike, Please can you inform what’s the best/correct finish for both the visible and invisible (IN THE STACK) parts of leaf springs? A couple of people I know insist on painting them totally including all in between the leafs, the normal for them bondaprimer / undercoat / enamel topcoat layers. (They do have to externally […]
Lowering Mono Leafs
Mike, Good morning, I have a street rod shop and retail parts store. I am building a ’68 Camaro, and looking for a lowering mono leaf springs for the rear. Can you help? Thanks – Bruce Bruce, We sure can. We make F and X Body mono-leaf springs with up to a 3 Inch drop. […]
48 Inch Springs, Hot Rod Rides Like A Truck
Mike, I have a 1938 Chevrolet Coupe Street rod with rear leaf springs which are 48 Inches long. Someone told me they are Dodge truck springs. And I believe them because the car rides like a truck. Do you have a spring that would make the car ride better and also get rid of the […]
Leaf Liners’ Effect on Spring Rate
Hi Mike, I just read your comment about Delrin inserts and it raised three more related questions I don’t believe I have ever seen answered. The first is, does using a full length insert change the thickness of the spring pack? Secondly, what effect do full length inserts have on spring rate? Finally, in general […]
