Is there any way that any of you LS1 Camaro guys who have gone to performance coil springs could weigh one of your front and one of rear oem springs and share that info with me.

I might suggest going to Wal-Mart and buying one of their 50# fish scales.
They are very accurate, cheap and handy to have around.

 

Maybe someone could take a front and rear oem coil spring and take them to grocery store and weigh then in a the fruit scale.