Skip to product information
Photo - Primary
1/5
  • Photo - Primary
  • User 2
  • Photo - out of package
  • User 3
  • User 1
Manley Small Block Chevy LS Series .600in Lift Single NexTek High Perf Valve Springs

Manley Small Block Chevy LS Series .600in Lift Single NexTek High Perf Valve Springs

$299.64 $332.93
Part no. 221428-16
Special order Not in stock at our distributor. Lead times vary and can run several weeks. Contact us for an ETA before ordering.

Your vehicle

Year, make and model. Our techs check fitment against it before the order ships.

From drag strips to short track and endurance circuits, the Manley NexTek® series is engineered for serious racers. NexTek® springs resist pressure loss and valve-train degradation even in the most demanding race conditions. That means more consistent spring...

Full details and fitment

The details

About this part

From drag strips to short track and endurance circuits, the Manley NexTek® series is engineered for serious racers. NexTek® springs resist pressure loss and valve-train degradation even in the most demanding race conditions. That means more consistent spring force deep into a run, reduced valve bounce, and improved overall stability for high-RPM performance. Built to outperform and outlast in real-world competition.

  • Tightly controlled open-end flatness reduces valve stem side loading
  • Manufactured from “super clean” Hi-Tensile Chrome Silicon steel
  • Proprietary multi-step heat treating minimizes load loss
  • Tip thickness designed to eliminate overload breakage
  • Shot-peened to MIL spec for max fatigue life