Holden 6 Cylinder Red Blue Black Hydraulic Camshaft XU1 Spec

Upgrade your Holden 6-cylinder with this Red, Blue & Black Hydraulic Camshaft, engineered to replicate the factory XU1 grind while delivering strong mid-range and upper-RPM power. Designed for carbureted engines, it’s the ideal choice when you’re chasing a street-friendly cam that still wakes up the top end. To realize its full potential, pair it with performance headers, a properly tuned carb, and matched valve springs and retainers.

Compatibility

• 08/1963–1971 Holden models: EH, HD, HR, HK, HT, HG Series
• 07/1971–1984 Holden models: HQ, HJ, HX, HZ, WB Series
• 10/1969–1979 Holden Torana: LC, LJ, LH, LX, UC
• 10/1978–1986 Holden Commodore: VB, VC, VH, VK

Key Specifications

• Part No.: 35604
• RPM Range: 2800–6200
• Duration (Advertised): IN 293°, EX 293°
• Duration @.050”: IN 228°, EX 228°
• Lift with 1.5 Rocker: IN.423", EX.423"
• Lobe Separation Angle: 110°
• Lash (Measured Hot): HYD (hydraulic)
• Cam Type: Hydraulic Street Cam

What to Expect

With a performance-oriented profile that stays practical for street use, this Camshaft emphasizes a smooth idle and confident mid-range pull, stepping up into the upper RPM band without sacrificing daily drivability. Its XU1-inspired grind provides a recognizable lift and duration signature that complements carbureted setups when matched with the right intake, exhaust, and ignition tuning.

Installation & Tuning Tips

• Use performance valve springs and retainers to properly control valve float and ensure reliable operation at higher RPM.
• Pair with suitable headers and a correctly calibrated carburetor for best results.
• Converter stall speed should be equal to or greater than the cam’s minimum RPM to maximize the power range and driveability.

Designed for enthusiasts who want a distinct, street-friendly cam with proven XU1 heritage, this hydraulic camshaft is a compelling choice for Holden six-cylinder builds that aim to elevate both torque and top-end performance without compromising daily usability.