I have not found any mfgs. yet. The Good Doctor suggested we start collecting them from older big block distributors.
If a mfg. was found, they could be used for all engines including the SL6.
There are two philosophies in recurving.
One is use any spring you can find and weld up the govenor slots to limit the throw. This is trial and error for most of us since a matrix or table has not been published on the forum yet for what length slot yields a given mechanical timing. This is what many racers do. If a spring breaks the weight is limited by the slot.
The second is to recurve using MOPARS original intent. Use a long slotted govenor and a heavy secondary long, medium or short looped spring to limit the throw. The fine tuning option is to rotate the spring pegs for the desired effect. This gives you the initial hit by 2000 rpm and then an extended boost of a few more degrees after 2500 depending on the length of the loop and and wire gauge of the spring. The initial hit is governed by the weight of the primary spring. It is real nice for cruising and getting a little more mileage out of your ride. Coupled with the a long throw vacuum advance you can get some real good mileage.
This is how I got my SL6 to wake up and provide a very peppy response. It will also break the tires loose if you stab the throttle. It is no longer a slug, pressing down on the accelerator waiting for something to happen.
