Reversing Spring Eyelets

I had lowered my 1954 Pontiac 1 1/2" originally using lowering blocks. It's not ideal as it affects the performance and handling of the rear end. My friend equates lowering blocks to putting your rear end up on stilts. A better and simpler solution is to reverse the rear spring eyelets.

Reversing the eyelets moves the mounting position of the leaf spring 1 1/2" while keeping the same ride. This is the same height as adding lowering blocks but it doesn't affect the handling of the rear end as a matter of fact it improves it. When I reversed mine, I changed the rubber mounting bushings to urethane at the same time - what a difference doing both has done. Before the rear end was loose and all over the place. Now it's like a sports car. Excellent!

Reversing the eyelets brings the rear end up 1 1/2" closer to the body.

On a multi-leaf spring like mine, you only have to reverse the main leaf with the eyelets then assemble the other leaves as before. Over at the Jalopy Journal, there's a good thread on how to reverse the eyelets using a hydraulic press. The basic idea is to reverse the spring arch which technically reverses the eyelets in the end:

  1. Record the arch of the original spring before you work on it by drawing the outline of the spring on something
  2. Evenly mark the spring in spacing of 4 inches or so, these will be your press points
  3. Have a jig made for your hydraulic press that has supports for your spring 4 inches from the center press on either side
  4. Make multiple press passes on the 4 inch marks on the "reverse" side of the spring until the curve is reversed and matches the outline drawing done earlier

You can use a hydraulic press to reverse the arch on your leaf springs but they will sag in a year.

I went this route last year and it is very easy to do except that over the past year, the springs slowly sagged until they are now 2 inches lower and the ride has soften substantially! I used to have 3 inches of clearance between my differential and the bump stops, now I have 1 inch. The rear end is too low and bottoms out all the time.

Better Solution

Go to a spring manufacture and spend a couple of hundred dollars to have them make a set of springs with reversed arches that match the existing ones. It is well worth the time and effort and they won't sag in a years time and you won't have to do it all over again.

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Copyright July 2013 Eugene Blanchard