Feature

●Outside Diameter: 1.260", Inside Diameter: 0.785"
●Closed: 125 lbs. @ 1.750" , Open: 325 lbs. @ 1.200" , Coil Bind @: 1.160"
●Package includes retainers, locks, Valve Springs and top hat valve stem seals as pictured shown.
●Compatible with GEN III / IV LS style engines (4.8L, 5.3L, 5.7L, 6.0L, 6.2L)
●Beehive design valve springs kit, made of high quality material for premium strength and durability, Professional Installation is Highly Recommended (No Instruction Included).


Description

Full set of (16) High Grade Viton Valve Seals(8 intake and 8 exhaust). These valve seals fit the LS (4.8L, 5.3L, 5.7L, 6.0L, 6.2L & 7.0L ) engines with .313" (8 mm) stem valves and guide boss machined to .500".

The Z28 +.100" springs are stock outside diameter and can be used in many 1955-1993 small block Chevy V8 cast iron cylinder heads. They work great for stock, towing and most mild performance cams and work best with cams up to 0.550" lift. Many sellers claim these springs can handle up to 0.600" maximum lift but I personally dont believe they have enough spring pressure to handle more than 0.550" lift.

Valve SpringSpecifications:
Spring Part Number: RV1943X
Outside Diameter: 1.260"
Inside Diameter: 0.785"Closed: 125 lbs. @ 1.750"
Open: 325 lbs. @ 1.200"
Coil Bind @: 1.160"
Spring Type: Single with damper