.560" Lift Beehive Valve Spring Kit for Chevrolet Gen III IV 4.8 5.3 5.7 6.0 6.2

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 don't believe they have enough spring pressure to handle more than 0.550" lift.
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