Can I use variable rate coil springs on my van?
Coil Spring Tech Articles, Videos, and More
Over the years, we have taught thousands of street rodders and resto-modders the ins-and-outs of cutting coils and Mustang II front-ends.
Become a coil spring master! Browse through hundreds of articles, videos, and answered tech questions below. And if you don't find an answer? We are always happy to help.
Are Welded Coil Springs Salvageable In Any Way?
My vehicle had coil springs welded to the lower perch. What should I do?
Stock Ride Height Is Too High, How Much Should I Cut My Front Springs?
Should I cut these coils, and how much should I cut them?
How Do I Find The Springs I Need On This Website?
I can’t find the springs I need online! Why is that?
Urethane and Rubber in Coil Spring Isolators and Bushings
Which isolator should I use? Is it the same material for the bushings?
Why We Don’t Pre-Band Coil Springs
Can you compress the coil springs before you ship them?
Can Coil Springs Have Two Different Ends?
Can a spring be both tangential and square?
Will Two Coil Spring Isolators Reduce Road Noise Further?
Is there an advantage to using coil spring isolators on the bottom as well as the top of springs?
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 […]
Should I Cut Coil Springs or Use Dropped Spindles?
Mike: Hope you can help. I am in the process of rebuilding the front end of my ’57 Chevy car. If I use 2″ lowering springs, can I use the same front shocks or do I need to get something else? Would it be better to install the 2″ lowering spindles instead of the springs? […]
How Much Can Coils Lower My Resto-Mod, Should I Check The Alignment?
Mike, I have a ’55 Ford Fairlane Tudor Club Sedan that needs new front coil springs. I am going with a resto-mod approach. Better handling with a decent ride quality. The question I have is, can the front end be lowered by using shorter springs? Will this throw any alignment or other related issues off? […]
How Much And When Do Coil Springs Settle? (Also, How To Choose The Right Mustang II Springs)
How much can one expect the springs to settle after installation?
Which Mustang II Front End Springs Should I Use?
The front springs on my street rod are sagging after installing a big block. How should I go about finding the right replacement springs?
How Are Ride Height Changes Calculated?
How do you measure ride height? What does plus/minus one inch actually mean?
When Do I Install Coil Springs On A Hot Rod? What Do I Do Until Then?
Mike, I recently purchased a 1934 Ford 3 window coupe replica. To make a really long story short its an older kit that just never got put together, but in an excellent condition. My first order of business is to get a rolling chassis. The build book that was provided by the manufacturer calls out […]
My Nova Coils Are Too Stiff. How Do We Find Softer Rate Springs?
Mike, I have a ’72 Nova sub frame under my street rod and stock springs are way to stiff. Do you know what the spring rate of a stock Nova with a V-8 is and do you have softer front springs? – Ron Ron, The 72 Nova with a V8 used many different springs. The […]
Why Is The Nose of My Unfinished Vehicle High After Installing New Coil Springs?
Q – Mike, I bought both front and rear springs for my KR from Eaton and I am not happy at all. Just look at the picture. The nose of my car is sticking way up in the air. This is crap. I was sent the wrong springs. What are you going to do about […]
How Complete Does My Car Need To Be Before It Sits Right On New Coil Springs?
Dear Mr. Eaton, I must let you know that I am a very unhappy customer. In August of 2009 I purchase both front and rear coil springs for my 1969 Pontiac GTO. Your sales person, Gary, seemed to be very knowledgeable at that time. He asked more questions about my car than any other parts […]
Why Is My Car Sit Higher With New, Stock Ride Height Springs?
Q -I ordered a set of coil springs so my 1969 GTO would sit 1 Inch lower. But when I put them on the car sat higher than it did with the old springs. How come? Don – New York A – Don, Remember when you placed the order with Gary he said asked how […]
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 […]
