Unique Auburn 851 lowering springs

I thought I'd seen springs like these before apparently it was done on early stock cars to lower the rear without changing the spring rate.

A customizer in the old days heated the springs with a torch. Definitely not original.

Looks like Cord 810 812 spring shackles are the same design as on Auburns. Makes sense to have drawn them from the same parts bin too.
As for the modified spring shape it must have looked like a good idea at the time.

I'm pretty sure it's not factory, not good spring action and probably not to durable!

Interesting idea... I'm thinking this is NOT factory but some after market idea

Take a look at the bend in these Auburn 851 rear springs. I guess it's cheaper than the factory lowering blocks.