COMP Cams GM 603/604 0.570in Lift 1.077/1.282 OD Beehive Hustler Valve Spring Kit - H604-16

Beehive Hustler Springs for GM 604/CT525 LS Crate Engine

Application: Designed for use on GM 604 and CT525 Crate Engines. Also fits all GM LS engines including truck engines, excluding LS7.

Visually identical to the blue LS6 springs, Hustler Beehive Springs add 4% higher load than stock for better valve control over stock. This spring delivers an advantage in circle track racing for those willing to bend the rules.

COMP Cams Hustler Valve Springs are an improved version of the popular GM LS6 "blue" valve spring. They are based on popular GM part #12499224 and #12565313 LS6 springs but with 4% higher seat and open loads for better dynamic control, as well as an extra .020" of lift capability. They are an excellent performance upgrade in GM 603/604 and CT525 LS crate Race Applications with tight rules packages.

• Reduces the weight of the spring and allows a smaller, lighter retainer
• Allows better heat dissipation for longer life of the spring
• Handles stress more efficiently
• More stability, higher RPM, longer life and more horsepower
• Reduces the weight of the spring and allows a smaller, lighter retainer
• Increases high RPM horsepower and durability
• Increases harmonic resistance for greater stability
• Handles stress more efficiently