Dual Valve Spring Kit for SBC Applications


A ready-to-install, complete Dual Valve Spring Kit that includes springs, retainers, valve locks, valve stem seals and locators to extend engine RPM and boost performance for all Chevy Small Block V8 engines. Features chrome silicon alloy, precision wound, heat-set, 1.306″ O.D. dual valve springs for required valve spring seat and open load pressure, plus total spring travel that will accommodate cams with aggressive gross valve lifts of up to .660″. Also included are CNC machined, 4140 steel alloy spring retainers, CAD designed to reduce weight while retaining uncompromised strength and durability. Precision machined, 7-degree steel valve locks are also provided for superior valve stem holding. Finally, each kit also includes premium steel locators and high-quality, Viton synthetic rubber, steel reinforced valve stem seals for superior valve stem lubrication and oil control.

Applications include: Gen I Chevy Small Block V8 262-400 and Gen II (LT1-LT4) V8 305-350 1987 & Later endurance circle track, off road, road racing, and marine or serious street performance applications.

Part #73925 Dual Valve Spring Specs: 
1.306″ O.D. 
0.676″ I.D. 
153 lbs. @ 1.810″ Seat Load 
400 lbs. @ 1.150″ Open Load 
0.660″ Maximum Valve Lift