COMP Cams MK54-335-58 Stage 1 LST 225/239 Hydraulic Roller Master Cam Kit for GM LS 3-Bolt Blower Engines (58X)

The COMP Cams MK54-335-58 is a Stage 1 Low Shock Technology (LST) 225/239 Hydraulic Roller Master Cam Kit engineered specifically for GM LS 3-bolt supercharged engines. Built around a billet steel hydraulic roller camshaft with COMP's proprietary LST lobe profiles, this kit is an excellent choice for stock or mildly modified 5.3L blower applications seeking a significant valvetrain upgrade in a single package. The 58X designation makes this kit compatible with LS engines equipped with a 58-tooth reluctor wheel (Gen IV-style crankshaft position sensor).

COMP's Low Shock Technology profiles are engineered to reduce valvetrain harmonics while maximizing high-RPM stability, delivering reliable power across a broad operating range from 2,000 to 7,200 RPM. Every kit is Spintron and dyno-tested to validate maximum power output, boost response, and long-term reliability under forced induction loads.

Camshaft Specifications:

• Grind Number: 283MGH14
• Cam Type: Hydraulic Roller
• Camshaft Series: Low Shock Technology (LST)
• Camshaft Material: Billet Steel
• Gear Attachment: 3-Bolt
• Advertised Intake Duration: 283°
• Advertised Exhaust Duration: 294°
• Intake Duration at .050" Lift: 225°
• Exhaust Duration at .050" Lift: 239°
• Intake Valve Lift: 0.612"
• Exhaust Valve Lift: 0.612"
• Lobe Separation Angle: 114°
• Basic Operating RPM Range: 2,000–7,200

Master Kit (MK) Includes:

• Hydraulic roller camshaft (billet steel)
• Hydraulic roller lifters
• 58X timing set
• Pushrods
• Dual valve springs
• Tool steel retainers
• Valve locks
• Spring seats
• Valve seals

This master kit provides everything needed for a complete valvetrain overhaul on a supercharged GM LS engine. For upgraded stock rocker arm applications, COMP recommends part #1477-16; for a Max-Lift BSR shaft rocker system, use #1981-16. Cam install kit #5621 is also recommended. Note: Assembly lubricant and gaskets are not included.