AS-1019CG Complete Leaf Spring Rear End Mounting Kit for 1941-1948 Chevy (Gas Shocks)

$595.00
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AS-1019CG
AS-1019CG Complete Rear End Mounting Kit for 1940-1948 Chevy (Gas Shocks)

AS-1019CG Complete Rear End Mounting Kit for 1941-1948 Chevy (Gas Shocks)

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Bolt-on Rear End Leaf Spring kit for 1941-1948 Chevy car.

The AS-1019CG kit fits a wide variety of rear ends (up to 3" axle housing diameter), depending upon the off set of wheels and tire choice .

We recommend aprox. 60" for 41-48. 

When you order, please specify the rear end you are using

 

This rear end kit includes the following:

  • Chassis Engineering 2-1/2" slider leaf springs
  • Front and rear leaf spring mounts
  • Leaf spring shackles
  • U-bolts
  • Leaf spring pads
  • Shock mount kit
  • New gas shocks
  • Hardware
  • Instructions

 

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Prevent your suspension from bottoming-out and expensive vehicle damage by including a pair of adjustable rubber snubbers (link) with your order.

 

 

 

IF-3739CP Mustang II IFS for 1937-1939 Chevy

Chassis Engineering Installation Instructions for 1941-1948 Chevy Leaf Spring Rear End Kit

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Please read the instructions carefully before you start putting things together.

Step 1. 

  • Remove the original spring hangers by drilling out the rivets. 
  • Be careful because the holes are being reused.

Step 2. Spring mount (front)

  • Line up the holes in the mount with the rivet holes (same ones of the original mount). 
  • The offset goes to the rear and outside. 
  • Clamp it in place and ream-drill for 5/16" holes. 
  • Then bolt the mount in place.

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(Do not install the front brackets backwards, because the center line rear axle will end up approx 3" to far backwards)

Step 3. Spring mount (rear)

  • The left and right mounts are the same. 
  • The offset goes to the outside. 
  • The two front holes in the new mount match the two front holes from the original mount. 
  • Clamp the mount in place and ream-drill the 2 front holes and the 2 rear ones through the bracket to 5/16".
  • Bolt the part in place.

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Step 4

  • Bolt springs in place (2 clamps to the front). 
  • Front uses stock bushing. 
  • Rear is empty to accept the furnished shackle. 
  • Install the shackles.

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Shackles: 

  • When tightening the shackle nuts, the outside shackle plate seats on the shoulder of the shackle studs and not when the bushings smash.

 

Rear Shock Kit

Step 1. 

  • Clamp upper combination shock mount / swaybar mount to the frame in the location shown.

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  • On some cars there might be a bit of interference with the spare-tire well. Modify the well as needed. 
  • The tube goes below the frame rails, not in-between. Drill frame to 5/16" and bolt upper mount in place.

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  • Install shock studs (from shock hardware bag) pointing forward.

Step 2

  • The spring retainer is used with the shock mount angled down. 
  • Spring retainer is installed with stud towards the inside and pointed backward.

Finally

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Rear end pads:

Step 1. 

  • Weld pads (spring and swaybar) on the rear end in these locations. 
  • We suggest a tack weld until you can check pinion angle with complete weight on the car.

Step 2. 

  • Pinion will normally point up at 4 degrees. 
  • Swaybar pads should be straight (parallel) with spring pads, pointing forward.

Step 3

  • Slip U-bolts over axle and bolt unit together and install shocks.

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Springs:

  • New springs will normally drop up to an inch in the first 500 miles of use. Depending on the weight of the car, new springs can have a slight arch, sit flat or be slightly reverse-arched. This is normal.
  • The spring is acting like it should. Also, parallel leaf springs are almost never perfectly parallel, it is just a name for this type of suspension.
  • We do not recommend hard bushings of any kind for springs. Rubber bushings will absorb vibrations and road noise and allow for some flexing.