Front spring question

I am getting ready to reinstall the front suspension on a 65 mustang after a disc brake, shelby drop, and shim eliminating conversion.
I am test fitting everything (haven't torqued the bolts to spec yet) to make sure that I have all the correct parts.
I am noticing a problem with the upper control arm movement.
As I release spring tension from the compressor, the upper control arm moves all the way down until it bottoms out on the chasis. This can not be correct, as I don't believe there is spring tension on the lower control arm or shocks, so Shouldn't the upper arm movement stop at approx a 90 degree angle to the chasis? Does the proper torque on the upper control arm bolts stop downward movement of the upper control arms?

Thanks for the reply!

correct, i have the spring compressor that bolts from the shock tower to the perches, which is why i wasn't super concerned about partially releasing spring tension without proper torque (only hand tight) as there is little risk of the spring coming loose.

So, if I compressed the spring, torqued the bolts all way, the movement should stop at approx 90 degrees?