Upgrade your'47-'54 Chevy 1/2 or 3/4 ton truck's suspension with proven Mustang II suspension, Constructed of 7 gauge steel, with welds ground smooth and includes frame boxing plates for strength/support, One-Piece Shock Cups are T. Welded in place and have anti-dive built in keeping your vehicle stable under braking, Vertical inner uprights is the strongest design available, with twice the weld area and keeps your frame from twisting, Crossmember and spring towers are precut and pre-welded to fit your frame, illustrated installation instructions included, will require cutting/grinding/welding on your frame.
1947-54 Chevy Truck IFS Crossmember, Mustang II Front Suspension. Front steer rack-and-pinion steering provides greater steering feel.
Complete weld-in assembly made from 3/16-inch steel adds strength. Vertical inner uprights provide a strong design with twice the weld area. Application specific crossmember and spring towers pre-welded to save installation time. Allows for numerous control arm and disc brake kit upgrade options. Compatible with manual or power rack-and-pinion steering systems.Compatible with stock stamped steel control arms as well as tubular control arms. Stock style control arms will require strut rod brackets or tubular strut rod kit. Rack-and-pinion mounting points rotated rearward 20 degrees for steering shaft clearance. Built-in anti-dive and bump steer correction mounting points.
Lower control arm pivot tubes and corner gussets not included. Accepts stock Mustang II spindles or aftermarket drop spindles. All welds ground smooth, saving you time and energy during installation. Frame boxing plate kit included for additional strength enhancement. Works with both 1/2 ton 3100 chassis as well as 3/4 ton 3600 chassis frames.
Much like the advent of hydraulic, or "juice" brakes, became an industry standard, so has independent front suspension (IFS). These updates are what can turn a long drive at highway speed in your'47-'54 Chevy truck hot rod from sketchy to serene simply by replacing the outdated straight axle suspension and its kingpins and dual leaf springs for a well-engineered weld-in IFS solution utilizing the tried and true suspension geometry that debuted on the 1974 Mustang II. Built Strong to Handle the Road Ahead and Look Good Doing It. Like most trucks built in this time, they were designed for hauling and not personal or recreational use like we enjoy our trucks today.
To that end, GM opted for the frugal, yet strong straight beam front axle suspended by a leaf spring at each side. Great for the rutted dirt roads going from the farm into town carrying crops, but terrible for today's road manners and speeds.
Of course, there is always the effect of alignment on a front suspension and getting a straight axle front end aligned is no small chore, often requiring heating/bending of the axle tube itself or other modifications. Beginning with our 7 gauge steel (that's a full 3/16 of an inch thick) boxed Mustang 2 front suspension crossmember that is fully welded with extended vertical uprights we have designed in anti-dive geometry to our crossmember and spring towers. Suspension travel, which yields a better ride, is upwards of five inches with our IFS and aligning the IFS can be handled easily by any competent alignment shop. Rack-and-pinion steering provides a quick and crisp steering effort at any road speed, and we have designed our rack mounting tabs to not only be optimized to eliminate bump steer but lay the steering rack back at a 20 degree angle to facilitate a lower steering shaft angle.This helps with exhaust manifold/header and overall engine clearance. The mounts accept both 15-1/2-inch and 16-inch on center rack mount spacing for use with manual or power steering assemblies. Stock height Mustang II spindles will result in a typical 3-4-inch drop in ride height. Lastly, upgrading to a weld-in IFS Mustang 2 front end kit greatly enhances your braking options with the ability to run the most basic disc brake package all the way up to serious multi-piston racing disc brakes. Track width is dependent upon the brake package you choose, usually adding up to 2-inches to the IFS, creating a 56-1/2-inch to 58-1/2-inch hub-to-hub width. We do offer 5/8-inch narrower and control arms if you need the clearance for larger wheel offsets or widths. As you can see, our crossmember is the perfect foundation for building the best Mustang II front suspension for your'47-'54 Chevy truck. Welds to Your Stock Frame Rails for Strength and Accuracy. We understand that bolt-in suspension upgrades are easier for those that like to spin their own wrenches, but we designed our Mustang II crossmembers to be a weld-in solution to maintain their strength and integrity throughout the life of your'47-'54 Chevy truck. We even include frame boxing plates with this kit for additional strength. While we do encourage the use of a certified welder or chassis shop for installation, if you know your way around a measuring tape and have a MIG welder in your garage there's really nothing stopping you from following our detailed instructions to fit and weld our Mustang II front suspension crossmember into your'47-'54 Chevy truck's frame rails. Welding our Mustang II suspension crossmember into place is a straightforward installation and can be handled in just a few short hours once the old straight axle and front suspension have been removed. If you are going to use stock-style lower Mustang 2 control arms you will need or our for installation. Note, lower control arm pivot tubes and gussets are not included, as they are typically included with tubular style lower control arm kits. We offer with and without disc brakes to help you complete your installation. Lastly, if using a power rack-and-pinion steering unit you will need our for proper clearance along with the corresponding.
This varies and is dependent on application and options. Most kits drop the vehicle by 3-4. Drop spindles and running lower profile tires than stock also adds to the amount of drop that can be achieved. You can also fine tune your ride height with our Mustang II. You may want to mount custom wheels to your Mustang II conversion and determining proper track width for your application is essential for figuring correct backspacing and overall ride stance.
Standard wheel base is 56-1/2" with a 60" version available for trucks. Narrowed arms are available to move the wheel in by 5/8 on each side. PDF for various track width options. Either manual or power steering can be used with these crossmembers.The passenger side mount has a slot that will take the later model power rack. With all Mustang II aftermarket crossmembers. Must be used with the later (Fox-body) power rack. For most popular V8 engines, including SBC, LS, SBF, and early Hemi.
Applications where the vehicle has fenders that mount directly on top of the frame, the fenders will require extensive modification to allow clearance for the upper cross member section. Includes crossmember and spring towers. By Catman on January 21, 2022. Fairly easy to put together.
Yes, I recommend this product. By Dave on February 14, 2021. So far only have started the boxing strips.
So far the quality looks good. Only have installed the boxing plates, minor grg. By Wyfarmall on February 05, 2020. Fit really well with minor trimming. Nice clean look with welds already ground.
By lgh on September 16, 2019. Looked good, went a different direction, but looked like good quality.
By Bagged54 on September 28, 2017. Fairly easy install, with a little test fitting, trimming and basic welding knowledge. Related Items / Suggested Parts. Mustang II IFS, Standard Tubular Control Arms, Stock Springs and Spindles. Tubular Control Arms, Stock Springs, Dropped Spindles.Mustang II IFS, Narrow Tubular Control Arms, Stock Springs and Spindles. Mustang II IFS, Narrow Control Arms, Stock Springs, Dropped Spindles. Tubular A-Arms, Coilover Springs, Stock Spindles.
Mustang II IFS, Tubular Control Arms, Coilover Springs, Dropped Spindles. Mustang II IFS, Narrow Control Arms, Coilover Springs, Stock Spindles.
Mustang II IFS, Narrow Control Arms, Coilover Springs, Dropped Spindles. Control Arms, Air Ride, Stock Spindles, Wilwood Brakes. Control Arms, Air Ride, Dropped Spindles, Wilwood Brakes. Mustang II IFS, Short Control Arms, Air Ride, Stock Spindles, Wilwood Brakes. Mustang II IFS, Narrow Arms, Air Ride, Dropped Spindles, Wilwood Brakes.
Speedway Motors is America's Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 72 years.