
Manley Performance · New
Manley Chevy SBC LS-Series NexTek Series High Performance Valve Springs (2 valves per cylinder)
MPN 221436-16 · Store SKU man221436-16
Supplier stock checked 11/7/2026, 12:35:17 PM UTC. Adding a part does not reserve it.
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Product details
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. Manley Valve Spring, SPRING-1.290 DOUBLE Manley Valve Spring, 1.290 DOUBLE
Manufacturer fitment & guides
Check 221436-16 against the manufacturer’s application information below.
A manufacturer application guide is not available for this listing. Request the exact application from JuiceBuilt before payment.
Part-specific notes
- California Proposition 65: Y