Building up an LS engine and need some solid valve springs?

This PAC1218-16 beehive kit is exactly what you're looking for.

It's a direct drop-in for all GM LS engines, handling up to .600 lift without breaking a sweat.

You get 16 springs in the kit—each one designed with that beehive shape to reduce weight and keep valvetrain stability at higher RPMs.
Installed height is 1.800 inches with 130 lbs of seat pressure, and at .600 lift, they open up to 318 lbs.

The spring rate is 313 lbs/in, and coil bind maxes out at 1.140 inches.

Big end OD is 1.290 inches, small end 1.055 inches—fits standard LS retainers and keepers.

Made from quality steel, these things are built to last.
Plus, they come with a 3-year warranty, so you're covered if anything weird happens.
Whether you're rebuilding a stocker or adding a cam, these springs will handle the job.

Direct fit, no mods needed.

Grab a set and get that valvetrain under control.
