1947-54 Chevy Pickup Rear Suspension/Axle Kit, Ford 9 Inch Posi

• Complete bolt-in 4-link rear suspension retrofit kit for AD-series trucks
• Includes QA1 adjustable coilover shocks to fine tune ride height and quality
• Coilover shocks come with AFCO chrome plated 250 lb/in springs
• Suspension kit retains original wheelbase and rear axle location
• Lowers ride height approximately 2-1/2 inches
• 9-inch axle housing includes 31-spline axles and 3.50 posi geared 3rd member
• Features 11-1/4 inch disc brakes with GM Metric brake calipers and brackets
• Triangulated 4-link kit enhances traction, and provides better handling
• For use with 1/2-ton chassis trucks only, will not work with 3/4-ton truck chassis
• Modification to shock crossmember required to fit 1954 model year frames
• Kit mounting hardware and all axle/brake fasteners included

Four-Link Your Advance-Design ’47-’54 Chevy Truck with Our Bolt-In Kit

Trucks may still be how work gets done today, but there’s no denying that the truck market has grown to include those that use a truck as personal transportation, a weekend toy, or even as a race car. Classic trucks no longer languish in fields rusting away. They are plucked from the jaws of death to be given a new lease on life as a project vehicle. And while the ’67-’72 C10 (and even Square Body and OBS models) is hot right now, we can’t forget about the “OG” here, the Advance-Design Chevy pickup built from 1947-1954. It is still a very viable option for a project with period styling that still looks great to this day.

The downside to such an old truck is obviously going to be the suspension and brakes. Updating the ox cart-like buggy-spring ride with something that will improve handling, traction, and ride quality is a must. There are a lot of, shall we say, complicated offerings on the market that require all manner of modifications and welding to bring the ’47-’54 Chevy truck’s ride improvements up to modern standards. We feel you should be able to reap similar suspension benefits with a bolt-in solution that can easily be installed in a weekend in your garage or shop, and our engineers have created just such a kit that checks all the right boxes, including no welder required.

A Triangulated Four-Link System That Is Adjustable for Handling, Grip, And Ride Height

Upgrading to a triangulated 4-link suspension provides you with the ability to adjust your rear suspension’s ride height, spring rates (250 lb/in springs included), shock valving, and pinion angle with ease. Triangulating the four-link rear suspension not only provides better handling and stability but allows for generous routing clearance for dual exhaust. The unsprung weight is reduced as well, improving the rear suspension’s ability to respond to road imperfections and maintaining maximum tire contact patch with the road for effective traction and braking ability. Triangulating the upper links also means that there is no need for an intrusive Panhard bar to aid in locating the rear axle, as the triangulated upper links handle that job. Without the need for a Panhard bar there is more room for your exhaust routing and for frame mounted fuel tanks behind the axle.

Bolt On Four-Link Conversion Frame Brackets Crafted from 7-Gauge Sheet Steel 

Beginning with our frame brackets for the upper and lower links, we laser cut and form these in house from 7-gauge sheet steel for precise fitment on your ’47-’54 Chevy pickup’s frame rails. The axle brackets, 7-gauge steel upper and 1/4-inch steel plate lowers, are already welded to our super strong 9-inch axle housing assembly ready to bolt in. The bolt-in shock crossmember is devised from .120-inch wall thickness 2x2 square tubing, precisely welded for a drop in fit to your frame rails as well. All brackets and links are bare steel ready to be painted or powder coated.

Included in our four-link suspension kit are steel upper and lower links with urethane bushed chromoly adjusters (16-inch and 21-1/2-inch center to center length), and aluminum QA1 single adjustable coilovers with chrome plated AFCO 250lb rate 10-inch coilover springs. All mounting hardware for the 4-link coilover conversion kit is included for the four-link suspension kit frame brackets and shock crossmember, to attach the 60-inch flange-to-flange dimension 9-inch housing and upper and lower links to the frame brackets, as well as mounting the coilover shocks to the axle housing and shock crossmember.

31-Spline Axles, 3.50-Geared Posi 3rd Member, and Disc Brakes Included!

To complete your 4-link rear suspension we’ve put together some of the best hardware on our shelves to allow you to install a complete 4-link setup on your ’47-’54 Chevy truck with nothing more than basic hand tools. Starting with our famed nodular iron 9-inch 3rd member with gear-style posi and 3.50 gears that we machine and assemble by hand in house, we add a pair of Currie 31-spline forged steel axles with dual bolt pattern flange (5x4-1/2 or 5x4-3/4), and an 11-1/4-inch rear disc brake kit that features brake rotors specifically for the Currie axle flange dimensions. The brake kit includes GM Metric calipers (with parking brake provision), brake pads, caliper mounting brackets, and all hardware necessary for installation. Furthermore, we add in the hardware required to install the 3rd member, with gasket, new wheel studs, and more.

It's everything you need to upgrade your ’47-’54 Chevy truck’s old leaf spring rear suspension to a modern triangulated 4-link suspension setup in a weekend with no welding required. Stock frames will require the removal of the original leaf spring mounts (basic grinder work to remove the frame rivets), then it’s just a matter of lining everything up properly and drilling new/additional mounting holes for the rear 4-link kit’s various brackets. Pair this kit with our ’47-’54 center chassis crossmember for additional strength/support, and our bolt-in Mustang II-style independent front suspension crossmember kit for a truck that will handle with the best of them!

Kit Includes:

• (1) Speedway 1947-54 Chevy Truck 4-Link Rear Suspension Kit
• (1) 1947-1954 4-Link 9 Inch Housing with Brackets
• (1) Speedway Ford 9 Inch Posi Traction 3rd Member Assembly, 31 Spl, 3.50
• (1) Currie CE-98132-30625 9 Inch Ford 31 Spline Axle Shaft, 30-5/8 Inch
• (1) Currie CE-98129-28375 9 Inch Ford 31 Spline Axle Shaft, 28-1/4 Inch
• (1) 9 Inch Ford Rearend Axle Housing 3rd Member Pumpkin Gasket
• (1) Third Member Mounting Hardware Kit, Ford 8 inch/9 inchRear End
• (1) 9 Inch Ford Rearend Axle Housing 3rd Member Carrier Stud Set
• (2) QA1 US402 Adjustable Shocks and Coilover Kit w/o Spring, 12 Inch
• (2) AFCO 23250CR 10 Inch Extreme Chrome Coil-Over Springs, 250 Rate
• (1) Ford 9 Inch Bolt-On Disc Brake Kit, Currie Axles, E-Brake Calipers, 10.25 inch Rotors

The caliper piston pin needs to be aligned with the notch in the pad to avoid fitment issues.