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Product Summary

63-86 Chevy C10, Front Position, 1000 lbs. Spring Rate

  • Bolt-in coilover shock mounting brackets fit multiple generations of C10 pickups
  • Manufactured from laser cut heavy gauge steel plate and satin black powder coated
  • Includes AFCO coilover shocks with a 4-inch stroke and 14-inch extended length
  • Choose from three spring rates: 900, 1000 or 1200 lb/in Hypercoil coilover springs
  • Requires the use of Speedway Motors tubular control arm kit #910-39300 ('63-'70), #910-39301 ('71-'72), or #910-39302 ('73-'87) for installation

Comes as a Kit

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Key Specs

PositionFront
Spring Rate1000 lbs.
Shock AdjustabilityNon-Adjustable
Shock TypeTwin Tube
Shock Body MaterialAluminum
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Speedway Motors 91039304-1000 Details

Coilover shocks provide not only better ride and handling but are also known for their ability to easily change spring rates as well as allow easily adjustable ride height changes. All it takes is a quick look under a race car, Pro Touring muscle car, or a pre-war hot rod to spot a set of coilover shocks. However, these applications often feature an OE shock (or strut) mounting position that allows for a coilover shock (or strut) to simply be a direct bolt-in replacement. That or the vehicle may be running an aftermarket full frame or front subframe setup designed for coilover shock use. In the case of some vehicles, like the First, Second, and Third generation Chevy C10 suspension, the OEM front suspension design does not provide for a bolt-in replacement shock solution, as the front shock is mounted between a frame stud and the lower control arm outside of the upper and lower control arm and coil spring arrangement. While this makes servicing the OE shock easy, the aft mounting points do not allow for a simple C10 coilover kit conversion. Our bolt-in LevelSet™ C10 coilover conversion kit provides a cost effective coilover shock solution using easy to install upper and lower adapter brackets mounted to the lower control arm and the truck’s frame.

Laser Cut Steel Brackets Provide a Precise Fit and High Strength Mounting Solution

Relocating the shock mounting points within the lower control arm and the frame’s original crossmember’s coil spring cup requires a strong mounting solution that will not flex or fail under not only static ride height, but during suspension articulation as well. We designed our bolt in shock brackets for C10 coilovers with the utmost strength using a combination of laser cut struts made from 5/16-inch thick steel plate welded to a 7-gauge laser cut and press bent mounting plate. The complete assembly is then fixture welded for accurate fitment and placement of the coilover shock assembly.

The mounting plates are designed to be used with our C10 tubular control arms and align with factory mounting holes for the OE upper control arms on the frame rail and the new lower control arm’s steel spring cup support plate that spans the tubular arm. Drilling/grinding of the old upper control arm rivets and grinding/cutting a clearance opening on the crossmember’s coil spring cup for coilover shock body/spring clearance is required and can be accomplished with standard automotive tools like a die grinder, small belt sander, or rotary tool. No welding or other fabrication needs are required to add our C10 coilover kit. The upper and lower coilover mounts are powder coated satin black for a great appearance and corrosion protection from the elements. All mounting hardware is included for a complete bolt-in C10 coilover conversion mounting solution.

Billet Aluminum Coilover Shocks with Your Preferred Spring Rate Included

The AFCO 1340CT Pro Touring shocks supplied are the perfect choice to enhance the ride and handling of your C10. We designed our C10 coilover conversion brackets around these shocks, which feature a 14-inch extended length and a 4-inch stroke with 1-inch wide rod ends top and bottom. For C10 coilover kit springs, we provide Hpercoil's blue powder coated lightweight steel springs. These feature an 8-inch free height with a 2.50-inch inside diameter. Spring rates will vary depending on your application needs, which is why we offer 900, 1000, and 1200 lb/in rate spring kits for you to choose from.

Complete The Job with Our C10 Upper and Lower Tubular Control Arm Kits

These shock mounting brackets for C10 coilovers are designed to work with our C10 tubular control arms (available for ’63-’70, PN 910-39300; ’71-’72, PN 910-39301; and ’73-’87, PN 910-39302 C10 pickups) that are sold separately. Stock stamped steel lower control arms or other brands of tubular lower control arms are not guaranteed to work with these brackets for proper fitment and shock mounting angle. If you’re already using our tubular control arms on your C10 all you will need to do is swap the bolt-on lower control arm spring pocket for our coilover shock lower mounting bracket and then perform the necessary upper spring cup modifications for coilover shock clearance when installing the upper coilover shock bracket.

Give your Chevy C10 suspension the ride and handling it deserves along with the adjustability of custom ride height and spring rates that coilover shocks are known for with our easy to install C10 coilover conversion kit.

  • High strength steel mounting brackets made from 5/16-inch and 7-gauge steel plate
  • No welding required, installation is a complete bolt-in solution
  • Mounting brackets powder coated black for a sleek look and corrosion resistance
  • Installation requires the use of our tubular control arms
  • NOT designed to work with stock stamped steel OEM-style control arms
  • Includes AFCO 1340CT Pro Touring coilover shocks with choice of Hypercoil springs
  • All mounting hardware for coilover conversion brackets and shocks provided
  • Enjoy The Benefits of a Coilover Front Suspension with Our Bolt-In C10 Conversion Kit

Speedway Motors 91039304-1000 Specifications

KEY SPECS
MFG. Part #91039304-1000
BrandSpeedway Motors
PositionFront
Spring Rate1000 lbs.
Shock AdjustabilityNon-Adjustable
Shock TypeTwin Tube
Shock Body MaterialAluminum
Shock Stroke4.00
Upper Shock Mount1/2" Spherical Rod End
Lower Shock Mount1/2" Spherical Rod End
Height AdjustableYes
FinishAnodized
GENERAL
Shock Body SizeLarge Body
Shock Body TypeThreaded
Compressed Length Range10.00" to 10.99"
Compressed Length10.32"
Extended Length Range14.00" to 14.99"
Extended Length14.25"
Spring Diameter2.50"
Spring Length8 Inch
Coilover Kit IncludedYes
Coilover Springs IncludedYes
Sold in QuantityKit
Welding RequiredYes
Lower MountSpherical Rod End
Upper MountSpherical Rod End

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