Learn me composite leaf springs

I have an old roadster i am wanting to set up to autocross some with. Put new rims and tires on it, and already have spax adjustable shocks on the rear. The problem is the leaf springs are shot. I was thinking about getting them re arched, but while looking around online found composite leaf springs for not much more than a re arching. Anyone got any experience with these? They would be much cheaper than going to a 3 or 4 link, and i can put em on myself. I know some astro vans and rangers came with these from the factory. Is it worth looking into these?

Some astros and rangers, every C4 Corvette and all pre-'96 W-bodies...

I started collecting fraying ones for making a crossbow. Good thing I never actually did anything with that, it'd probably be able to shoot through a garage and the car in it.

is fraying a common problem?

It was on the early W-bodies after a hundred thousand miles or two. Haven't seen a frayed one in a very long time.

Then again, I haven't seen a W-body that old in a very long time...

Knurled wrote: It was on the early W-bodies after a hundred thousand miles or two. Haven't seen a frayed one in a very long time. Then again, I haven't seen a W-body that old in a very long time...

on those it was due to the pad on the end of the spring wearing out, causing composite spring on steel action.

my 95 astro has 187k miles and still sits at factory ride height after being a work van its whole life, and i load the heck out of my vans with tile and other heavy materials and tools.

i read that they dont sag. my car is sagging about an inch on 1 side and anout 1/2 inch on the other.

patgizz wrote: on those it was due to the pad on the end of the spring wearing out, causing composite spring on steel action.

The ones that I've seen fraying were in the middle.

The end problem is a super-easy fix.

Not really related to this thread but I have made some carbon fiber leaf springs but it was for a much little vehicle.