Bill Smith
Founder, 1929-2014
Speedy Bill
Since 1952
Speedway Motors Logo
America's Oldest Speed Shop ®

Search

Canadian Leaf

Bolt-In 1947-54 Chevy Pickup Mustang II Crossmember

SAME DAY SHIPPING! Order within the next 7 hours 34 minutes and receive same day shipping

Specs
Material Type:
Steel
Sold in Quantity:
Each
Finish:
Natural
Hardware Included:
Yes
Material Thickness:
.19
Garage Sale:
No
Notes
Includes crossmember, spring towers, threaded adjusters, and mounting plates.
Bolt-In 1947-54 Chevy Pickup Mustang II CrossmemberBolt-In 1947-54 Chevy Pickup Mustang II CrossmemberBolt-In 1947-54 Chevy Pickup Mustang II Crossmember
Bolt-In 1947-54 Chevy Pickup Mustang II Crossmember

Click image to enlarge

Speeday Motors Logo
X
Bolt-In 1947-54 Chevy Pickup Mustang II Crossmember

Details

Reviews

Q & A

What's in the Box

Our bolt-in Mustang II suspension kit for 1947-1954 Chevy half-ton and 3/4 ton pickups includes all hardware and instructions. 

  • Completely bolt in - no welding required
  • Based on proven Mustang II geometry
  • Complete with bolt in boxing plates to reinforce the frame
  • Interlocking design for ultimate strength
  • Threaded adjusters to fine tune ride height
  • Full lower A-arms required with this crossmember (strutless type)
  • Requires the use of a power rack and pinion and tubular control arms
  • NOT for use with air ride

910-44754 Instructions (PDF)

Note:  Use bolt-in motor mount kit 910-54754 to mount your S/B Chevy.

Notes

This bolt in unit is ONLY made to fit a 47-54 Chevy 1/2 ton and 3/4 Pickup chassis. Inside dimension at axle centerline is 23-1/2", outside is 28". This frame is slightly tapered to the front. Standard MII spindles will set pin at 1/2" below frame rail and 2" drop will set it at 1-1/2" above. Track width is standard 56-1/2" depending on which brake kit is used.

You may also be interested in:

Mustang II IFS, Std. Tubular Control Arms, Coilover Springs, Stock Spindles
                        Hub-to-hub kit includes standard upper and offset strutless lower control arms, new standard spindles, rubber brake lines, Carrera coilovers, new manual or rebuilt power rack & pinion with bushings and new tie rods. The 11" brake kit features GM Metric calipers, with your choice of 5 x 4-1/2" or 5 x 4-3/4" bolt pattern.
  • Works with all Speedway and Heidts crossmembers 
  • Kit Includes:
    • Standard Tubular Upper and Lower Strutless Control Arms
    • New Stock Spindles
    • Coilover Springs
    • Rack and Pinion with bushings and tie rods
    • 11" brake kit with GM calipers
  1. Add proper crossmember to complete kit.

Spring Rate Chart (Link)

Note: Additional items may be needed to complete installation.  You may want to include our Mustang II ride height adjusters (91034444) for installation with these IFS kits to fine tune your final ride height up to 2".

Note:  If using these kits with Speedway or Heidts crossmembers for 1948-1956 Ford Pickups, 1955-1959 Chevy Pickups, or universal crossmembers for 27-1/2" - 33-1/2" frame widths, you will be required to purchase 2" Inner Tie Rod Extensions (91034345) or (91034346).

Mustang II IFS, Std. Control Arms, Air Ride, Stock Spindles, Wilwood Brakes
                        Hub-to-hub kit includes standard upper and offset strutless lower control arms, new  standard spindles, rubber brake lines, air ride springs/shocks, new manual or rebuilt power rack & pinion with bushings and  new tie rods. The 10-3/4" Wilwood brake kit features GM  Metric calipers with rubber  hoses, with your choice of 5 x 4-1/2" or 5 x 4-3/4" bolt  pattern.
  • Works with all Speedway and Heidts crossmembers 
  • Kit Includes:
    • Standard Tubular Upper and Lower Strutless Control Arms
    • New Stock Spindles
    • Air Ride Springs/Shocks
    • Rack and Pinion with bushings and tie rods
    • 10-3/4" Wilwood brake kit with GM Metric calipers
    • Choose 5 x 4-1/2" or 5 x 4-3/4" bolt pattern
  1. Add proper crossmember to complete kit.

Spring Rate Chart (Link)

Note:  OEM rubber brake hoses generally cannot be adapted to Wilwood calipers. The caliper inlet fitting is a 1/8-27 NPT. The preferred method is to use steel adapter fittings at the caliper, either straight, 45 or 90 degree and enough steel braided line to allow for full suspension travel and turning radius, lock to lock.

Note:  If using these kits with Speedway or Heidts crossmembers for 1948-1956 Ford Pickups, 1955-1959 Chevy Pickups, or universal crossmembers for 27-1/2" - 33-1/2" frame widths, you will be required to purchase 2" Inner Tie Rod Extensions (91034345) or (91034346).

Front Adjusting Wrench For Bolt In Cross Member
                        

Front Adjusting Wrench For Bolt In Cross Member

 

Bolt-In 1947-54 Chevy Pickup Center Chassis Crossmember
                        

Build a firm foundation for your vintage Chevy pickup without picking up a welder! This innovative line of chassis components from Speedway Motors allows the do-it-yourself rodder to assemble a frame using only basic hand tools and a drill.

  • Tubular steel bolt-together assembly – no welding required
  • Laser cut from 11-gauge steel plate
  • Bolt-in boxing plates add strength to frame

910-64754 Instructions (PDF)

NOTE: Finish will be plain steel, not powder coated as shown.

1947-1954 Chevy 1/2 Ton Pickup Truck Frame Rails
                        

Build a firm foundation for your vintage 1947-54 Chevy 1/2 ton pickup without picking up a welder! This innovative line of chassis components from Speedway Motors allows the do-it-yourself rodder to assemble a frame using only basic hand tools and a drill.

  • Laser cut from 7-gauge steel plate
  • Replicates shape and dimensions of original Chevy frame
  • Welded on a rail fixture to ensure proper shape
  • Ground and sanded to prep for finishing
  • For '47-'54 1/2 pickups

916-04754 Instructions (PDF)

NOTE: Finish will be plain steel, not powder coated as shown.

Radiator Support Brace for 1947-54 Chevy Pickup
                        

Build a firm foundation for your vintage Chevy pickup without picking up a welder! This innovative line of chassis components from Speedway Motors allows the do-it-yourself rodder to assemble a frame using only basic hand tools and a drill.

  • Bolt in lower radiator support to replace your rusted or missing original
  • Ideal replacement to avoid trimming your original for steering rack clearance

910-14754 Instructions (PDF)

NOTE: Finish will be plain steel, not powder coated as shown.

Rear Fuel Tank Brace for 1947-54 Chevy Pickup Truck
                        

Build a firm foundation for your vintage Chevy pickup without picking up a welder! This innovative line of chassis components from Speedway Motors allows the do-it-yourself rodder to assemble a frame using only basic hand tools and a drill.

  • Bolt in
  • Provides extra mounting options for fuel tank and exhaust

910-84754 Instructions (PDF)

1947-54 Chevy Pickup Truck Bolt-in Transmission Crossmember
                        These new replacement transmission crossmembers are designed for use with 1947-54 Chevy Pickups and can be used with original or reproduction frame rails.  Sturdy steel construction and the versatility to accommodate most GM transmissions make these crossmembers the ideal choice for your project. 
  • For use with original or reproduction frame rails
  • Can be mounted to accommodate most GM transmissions
  • Compatible with under-floor brake pedal
1947-54 Chevy Pickup Motor Mounts for Bolt-In IFS
                        

Small Block Chevy bolt-in motor mounts for use with Speedway '47-'54 Chevy Pickup Mustang II Bolt-In Crossmember # 910-44754. Kit includes steel frame mounts, steel engine mounts, rubber cushion set, and all hardware.

910-54754 Instructions (PDF)