Which isolator should I use? Is it the same material for the bushings?
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.
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 I Find The Rate and Load Of My Coil Springs?
How can you tell what the coil rate and load is for my `67 A-Body?
How To Test Coil Spring Ride Height With Stock Springs
Will fresh factory coils or longer coils gain me some height?
How Do I Find The Right Coil Springs For My Mustang II Hot Rod?
My coil springs are rubbing on the the upper ball joint housing. Is this ok? What should I do?
My New Coil Springs Are Falling Out, Is This Normal?
My mechanic says the new coil springs must not be right because the old ones were much more difficult to take out. Is this so?
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 […]
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 […]
Do Lightened Front Ends Need Lower Springs or Drop Spindles?
Mike, I have a 1970 Firebird, Fiberglass fenders, hood and nose piece, no fender wells and the battery in the trunk. So I have lightened up the front end by about 175 – 200 Lbs. The car now sits up high in the front and what I want is for it to sit 2″ lower […]
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?
