1957 Chevy Coilover Suspension Parts – Complete Guide

Upgrading to coilover suspension on a 1957 Chevrolet is a popular way to improve handling, ride quality, and adjustability. Unlike the original leaf spring or torsion bar setups, a coilover system integrates the spring and shock into one unit, allowing for precise tuning of ride height and dampening. Whether you're building a pro-touring cruiser or a weekend custom, understanding the available parts and their compatibility will save you time and money. This guide covers the essential components, popular brands, and key considerations for choosing the right coilover suspension parts for your 1957 Chevy.

Why Upgrade to Coilovers on a 1957 Chevy?

The factory suspension on a 1957 Chevy was designed for a comfortable highway ride, not performance driving. Coilovers offer several benefits:

• Adjustable ride height – Lower the car for a aggressive stance or raise it for clearance.
• Improved handling – Better cornering and reduced body roll due to stiffer, tunable springs and shocks.
• Modern dampening – Many coilovers feature adjustable rebound and compression, letting you dial in the feel.
• Weight savings – Coilover kits often replace heavy factory components with lighter aftermarket parts.

For a '57 Chevy, coilover conversion is most common on the front suspension, but rear coilover kits are also available for those who want a complete upgrade.

Key Components of a Coilover Conversion Kit

A typical coilover kit for a 1957 Chevy includes:

• Coilover assembly – The spring and shock unit. Available with various spring rates (usually 250–350 lb/in for street use) and shock lengths.
• Mounting brackets – For the lower control arm and upper chassis. Some kits reuse existing mounting points, while others require welding.
• Hardware – Bolts, bushings, and spacers.
• Instructions – Most kits come with a guide, but professional installation is recommended.

Front Coilover Kits vs. Rear Kits

Front coilover kits for the 1957 Chevy typically replace the factory torsion bar or coil spring setup. The most common approach is to use a tubular lower control arm and a coilover shock mounted between the lower arm and a crossmember. Some kits are designed for stock-style A-arms, while others require aftermarket control arms.

Rear coilover kits often replace the original leaf springs. They use a four-link or triangulated four-link setup with coilovers mounted on the axle housing and chassis. A rear coilover conversion generally requires welding new brackets and may involve removing the factory leaf spring mounts.

Compatible Brands and Kits for 1957 Chevy

Several reputable manufacturers offer coilover suspension parts specifically for the 1957 Chevy. Here are some of the most common options:

Speedway Motors

Speedway offers a front coilover conversion kit for ’55–’57 Chevys that uses their tubular upper and lower control arms. The kit includes matched coilovers and all necessary brackets. It’s a bolt-in design for most chassis, though some welding may be needed for the upper shock mount. Spring rates range from 300 to 450 lb/in.

Heidts

Heidts produces a complete front clip for ‘57 Chevys with coilover shocks pre-installed on their tubular control arms. Their rear four-link kit works with coilovers for a full suspension upgrade. Heidts kits are known for quality and precise engineering, but they are more expensive than budget options.

Ridetech

Ridetech’s StreetGrip and MuscleBar systems include coilover shocks for the front and rear of classic Chevys. Their shocks feature adjustable damping and are designed to work with their specific control arms and sway bars. Ridetech parts are performance-oriented and offer good ride quality.

QA1

QA1 sells individual coilover shocks and springs that can be used in custom installations. Their typical offering for a ‘57 Chevy front application includes an 18-inch shock with a 300–400 lb spring. QA1 is a good choice if you’re building a custom setup or need specific spring rates.

Chassisworks

Chassisworks offers a front g-Machine system for ‘55–’57 Chevys that includes tubular control arms, coilovers, and a sway bar. Their rear clip conversion also uses coilovers. These parts are designed for high-performance builds and are often used in pro-touring cars.

What to Consider When Buying Coilover Parts for a 1957 Chevy

Spring Rates

Spring rate affects ride comfort and handling. For a street-driven 1957 Chevy, rates between 250 and 400 lb/in are typical. Lighter cars or softer rides benefit from lower rates, while heavier or more performance-oriented builds need higher rates. Always verify the manufacturer’s recommendation for your car’s weight and intended use.

Shock Adjustability

Single-adjustable shocks allow you to change rebound damping; double-adjustable also control compression. For street use, single-adjustable is usually sufficient. Adjustable shocks help fine-tune the ride for conditions or personal preference.

Chassis Modifications

Many front coilover kits require some fabrication. The upper mount often needs a bracket welded to the frame, and the lower control arm may need to be replaced or modified. For rear conversions, you’ll likely need to install a new rear link system and weld mounting brackets. Check the kit’s instructions and your skill level before starting.

Brake and Steering Compatibility

Coilover kits may affect clearance for brake lines and steering components. Ensure the kit includes provisions for steering (rack and pinion or manual box) and that the lower control arm doesn’t interfere with brake calipers or rotors. Some kits require aftermarket spindles or front crossmembers.

Installation Overview

Installing coilover suspension on a 1957 Chevy is a significant project. Expect to spend several days to a week, depending on your experience. Basic steps:

1. Remove factory suspension – Front torsion bars or springs, rear leaf springs, and associated hardware.
2. Install new control arms – If the kit includes them, bolt on the upper and lower arms. Some kits reuse factory arms but require modifications.
3. Mount coilover shocks – Position the lower mount on the control arm and the upper mount on the frame or crossmember. Weld brackets as needed.
4. Adjust ride height – Use the threaded spring perch to set the desired height. Ensure the shock has enough travel (not bottoming out or topping out).
5. Align front end – After installation, get a professional alignment. Coilover changes affect caster, camber, and toe.

For rear conversions, you’ll need to install the four-link bars and axle brackets, attach the coilovers, and adjust pinion angle.

Final Recommendations

If you’re looking to upgrade your 1957 Chevy with coilover suspension parts, start by deciding your budget and performance goals. For a street-driven cruiser, a Speedway Motors or QA1 kit offers a good balance of cost and quality. For a pro-touring build that sees track time, consider Ridetech or Heidts. Always verify that the kit matches your car’s vintage (’57 Chevy frames can vary slightly) and whether additional parts like control arms or spindles are needed.

If you are not comfortable with welding and fabrication, plan to have a professional shop handle the installation. A properly set up coilover suspension transforms the driving experience of a 1957 Chevy, making it more responsive and enjoyable. Choose parts from reputable brands, and you’ll get years of reliable performance.