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Tech This Out! QA1 Coilover Conversion for 88-98 Chevy OBS C/K Trucks | We Install!

Chris Hamilton . August 26, 2020 . HEADLINE
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Modern Performance for Classic Trucks!

Add modern performance to a pickup that was designed for utility. With QA1’s bolt-on front and rear systems, not only can you lower your C1500, but you’ll also have ride height adjustability on all four corners, giving you that perfect level stance. Adjustability options let you tailor the system to create the performance desired, so your truck can handle those corners and curves like a sports car.

QA1 Suspension engineered a unique design offering an adjustable 4- to 7-inch drop that also maximizes performance without the inherent binding issues of other four-link systems. With superior control over suspension movement, you can easily dial in the stance for a smooth ride and great handling characteristics for both street and track. The systems come with a Panhard bar, torque arm, trailing arms, bracket mounts and shocks that are all adjustable. They are truly independent of each other, so you don’t have to worry about one adjustment affecting another. Everything needed is included, all the way down to the hardware. You can fully bolt in this system with no welding required.

Now you can bolt on big suspension performance with ride height adjustability and better geometry with the front conversion system, which integrates control arms with the coilover shocks to lower the truck and allow room for wider wheels and tires. These systems offer control arm weight savings of 25 pounds per side over the stock arms, plus up to 7 degrees of caster and a range of plus-2 to minus-3 camber. The extended upper ball joint also significantly improves camber gain during cornering.

So, the goal is to take a very well maintained, daily driven ’94 Chevy C1500 and give it a new attitude and lower stance. We wanted something that we could drive on reliably every day and not worry about heavy maintenance. Also, we didn’t want to cut into a pristine truck for a step notch or wheel tubs. The decision to swap the factory leaf spring suspension with this QA1 coilover conversion was a no brainer. It was a lot of work and attention to detail is important, but if you have some good mechanical know-how and access to all the tools you will need, we know this is a project you can knock out after a few days of elbow grease and bloody knuckles. Let’s follow along with our buddy Joe as we swap the suspension and carve up some corners.! Sources
QA1 Suspension
www.qa1.net

Atturo Tire
www.atturo.com

REV Wheels
www.rev-wheels.com

This particular OBS has a very common past, a story that I’m sure many of you have heard—but this is a special one that has to be told. The original owner of this truck bought it new off the lot and drove it daily ever since. He also happens to be a master automotive detailer, so the paint is factory and flawless, and the maintenance is like clockwork. At 300,000 miles he finally decided to part with it and Joe snatched it fast. It’s so clean!
We have access to a lot of tools for this project, which is great for us, but with the right amount of space and plenty of jack stands, your garage will be all you need to get it done.
First off is the brake calipers, hub and spindle. These will all be reused, so don’t set them too far away.
Next Joe removed the upper and lower control arms followed by the factory sway bar.
The factory wheelwells need to come out temporarily just to give the room you need to work.
These coilover shocks give us ride height adjustability and better geometry, and they integrate with the control arms to lower the truck and allow room for wider wheels and tires.
With everything removed and unboxed, Joe can bolt in the new control arms and coilover shocks. These control arms give us a weight savings of 25 pounds per side over stock, plus up to 7 degrees of caster and a range of plus-2 to minus-3 camber. The extended upper ball joint significantly improves camber gain during cornering as well. QA1’s Level 2 system is great for street performance; the Level 3 is designed for OBS owners who wish to compete while still being able to cruise to the track in comfort.
Now the factory spindle can be reinstalled on the new control arms.
Joe installs the new front sway bars that will make a huge difference in the corners.
With the front complete, we can bolt on our new staggered width 20-inch REV 110 wheels and Atturo AZ850 tires. The height hasn’t been dialed in yet, but it looks great so far!
Now we can focus on the back of the truck. QA1 promotes the kit as one that can be installed without removing the bed. But we wanted to take it off anyway to more easily clean and prep the frame.
With the frame clean of dirt and grime, it’s time to strip it of unnecessary metal and suspension pieces. The leaf springs and the rear hangers were removed.
Next we trace out the C-notch location and use a cut-off wheel to remove the metal.
The first rear bracket to go on is always the easiest. But by paying attention to the instructions we were able to get everything in the right place.
Next is the link bar brackets and hangers. The Panhard bar, torque arm, trailing arms, bracket mounts and shocks are all adjustable, and they are truly independent of each other.
As you can see, the coilover shock sits on the outside of the frame rail with plenty of clearance for wide wheels and thick tires.
The rear differential cover is designed to be part of the suspension with the Panhard bar brackets pre welded on.
Here is a clean look at the suspension before we add the Panhard and torque arm.
The final pieces assemble just as the instructions suggest. We are excited to see how this unique design performs on the road.
With the last bolt installed we can step back and truly appreciate the engineering behind this system. It’s very impressive and beefy.
With a 275-50-20 Atturo AZ850 tire on the back of this truck, you can see that we still have plenty of room. No rubbing issues here!
One final look at this craftsmanship before it’s covered up by the factory sheetmetal.
With the suspension complete, it’s time to put the bed back on and see the final product. Such an exciting time with any project!
BOOM! How clean is that! We love the stance, the REV wheels look killer, and it has plenty of tire underneath it. What do you think?

FREQUENTLY ASKED QUESTIONS

What is the spring rate of the included coil springs in the conversion kit?

The conversion kit comes with two coil springs, each featuring a robust spring rate of 700 pounds per inch.

 

Is the coil-over conversion kit sold individually or as a pair?

Single Adjustable Coil-over Conversion Kit Details:
  • Contents:
    • (2) Adjustable Coil-overs
    • (2) Coil Springs with a spring rate of 700 lbs./in
    • Necessary Hardware
  • Country of Origin: Made in the USA
  • Sales Information: This kit is sold as a pair, ensuring you receive components for both sides of your vehicle.

 

What additional parts are suggested for purchase along with the coil-over suspension kit?

When upgrading your vehicle with a coil-over suspension kit, consider enhancing your setup with these additional parts for optimal performance and versatility:

  1. Adjustable Coil Over Spanner Wrench
    • Price: $39.95
    • Use: Facilitates easy adjustment of the coil-over suspension settings.
  2. Rear End Conversion Kit
    • Price: $175.05
    • Use: Necessary for modifying rear suspension geometry; ideal for vintage models such as 1947-54 Chevy/GMC 3100.
  3. Deluxe Lowering Kit
    • Price: $1169.02
    • Use: Comprehensive solution for lowering both the front and rear ends; fits 1992-2000 Chevy-GMC C3500.
  4. Lowered Front Coil Spring Set
    • Price: $125.41
    • Use: Great for a consistent front stance; applicable to 1968-74 Chevy Nova models.
  5. Power Brake Conversion
    • Price: $461.16
    • Use: Enhances stopping power; suitable for classic vehicles like 1949-51 Mercury.
  6. Manual Master Cylinder Kit with Disc Brakes
    • Price: $241.36
    • Use: Essential for upgrading to disc brakes on older trucks; fits 1947-55 Chevy and GMC models.
  7. Performance Sway Bar Kit (Front & Rear)
    • Price: $307.43
    • Use: Improves handling and reduces body roll; fits 1955-57 Chevy Bel Air and similar models.
  8. Power Steering Conversion Bracket Kit
    • Price: $135.58
    • Use: Simplifies the process of adding power steering; fits 1947-59 Chevy/GMC trucks.
  9. Tubular Upper Control Arm Set
    • Price: $440.23
    • Use: Enhances suspension articulation and durability for better handling; fits 1973-87 Chevy C10.

By integrating these parts, you’ll not only improve your vehicle’s suspension system but also boost overall performance and safety.

 

What other related products have customers also bought?

Related Products Frequently Purchased by Customers

When browsing our automotive catalog, customers often find other related items that complement their purchases. Here’s a curated list of products that are commonly bought together:

  • Adjustable Coil Over Spanner Wrench – Perfect for precise adjustments, priced at $39.95.
  • Rear End Conversion Kit for Classic Trucks – Ideal for 1947-54 models, available for $175.05.
  • Deluxe Lowering Kit for 90s Chevy-GMC C3500 – Offering a 5″ front and 7″ rear drop, priced at $1169.02.
  • Lowered Front Coil Spring Set – Engineered for 1968-74 Chevy Nova, at $125.41.
  • Power Brake Conversion Kit – Tailored for 1949-51 Mercury models, priced at $461.16.
  • Manual Master Cylinder Kit with Disc Brakes – Designed for classic Chevy and GMC trucks, available at $241.36.
  • Performance Sway Bar Kit (Front & Rear) – Suitable for mid-50s Chevrolet sedans, priced at $307.43.
  • Power Steering Conversion Bracket Kit – Compatible with 1947-59 Chevy/GMC trucks, priced at $135.58.
  • Tubular Upper Control Arm Set – Perfect for 1973-87 Chevy C10 models, available at $440.23.
Popular Purchase Pairings:
  • Coil Over Spanner Wrench is often bought alongside suspension upgrade kits to facilitate easy adjustments.

By adding these related products to your cart, you can enhance your project and achieve optimal performance and aesthetics.

 

What components are included in the single adjustable coil-over conversion kit?

The systems come with a Panhard bar, torque arm, trailing arms, bracket mounts, and shocks that are all adjustable. They are truly independent of each other, so you don’t have to worry about one adjustment affecting another.

Single Adjustable Coil-over Conversion Kit includes:
  • 2 Phantom Series Coil-overs
  • 2 Coil Springs (Spring Rate: 700 lbs./in)
  • Hardware
  • Made in the USA
  • Sold as a Pair

This comprehensive kit ensures you have everything needed for installation, offering both flexibility and precision in your vehicle’s suspension setup.

 

Does the kit work with both factory and aftermarket tubular control arms?

QA1’s Level 2 system is great for street performance; the Level 3 is designed for OBS owners who wish to compete while still being able to cruise to the track in comfort. Both levels are designed to work seamlessly with factory or aftermarket tubular control arms.

This ensures that whether you’re upgrading your ride for daily driving or prepping it for the track, you’ll have no compatibility issues to worry about. The versatility provided by this compatibility means you can customize your vehicle to meet your specific needs without hassle.

 

What years of Chevy C1500 trucks does the front coil-over suspension kit fit?

Tech This Out! QA1 Coilover Conversion for 88-98 Chevy OBS C/K Trucks We Install!

Imagine transforming your classic Chevy truck’s handling and performance with a state-of-the-art coilover conversion kit. The QA1 Coilover Conversion is designed to fit a wide range of Chevy C/K trucks, specifically from 1988 to 1998. This includes the Chevy C1500 Truck in both Extended and Standard cab variations.

Fits These Models:
  • Years Covered: 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998
  • Models: Chevy C1500 Truck
  • Cab Types: Extended and Standard cab
Why Choose QA1 Coilover Conversion?
  • Enhanced Performance: Experience improved handling and ride quality.
  • Adjustability: Easily adjust ride height and damping to suit your preference.
  • Durability: Built to withstand the rigors of daily driving and performance demands.
We Install!

No need to worry about the complexities of installation. Our expert technicians ensure a seamless and professional installation, so you can hit the road with confidence.

Upgrade your Chevy OBS C/K truck today and feel the difference. Whether you’re cruising the streets or hitting the track, the QA1 Coilover Conversion is your ticket to an exhilarating driving experience.

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