Holden V8 253 308 Red Blue Black Hydraulic Camshaft 230/230@50

Holden V8 253-308 Hydraulic Camshaft in Red, Blue & Black is designed to unleash a bold, aggressive street character on carbureted Holden V8 engines. This hydraulic cam is built for carby heads only, delivering a lumpy idle and a responsive mid-to-upper RPM surge when paired with the right exhaust, carburetion, and ignition upgrades. If you’re aiming for a spirited street combination with a punchier throttle feel, this camshaft is tailored to make the most of your 308’s power band and, with the appropriate components, enhance everyday driveability. What it does - Aggressive street cam with a strong RPM window that rewards headers, ignition upgrades, and proper tuning. - Hydraulic lifters provide reduced valve train noise and simpler maintenance compared with solid lifters. - Specifically designed for Holden V8 253-308 engines; carby heads only to ensure optimal timing and lift characteristics. - Distinctive lumpy idle that translates to a confident, unmistakable cam profile on street applications. Key compatibility and installation notes - Engine compatibility: Holden V8 253-308. Must use headers, carburetor calibration, and appropriate ignition setup to realize the cam’s performance. - Required hardware: Must use performance springs and performance retainers to safely control valve train dynamics at higher RPMs. - Converter guidance: Use a converter stall speed equal to or greater than the cam’s minimum RPM in its power range to avoid bog or torque loss at launch. - RPM planning: The advertised RPM range is specified for a 308 engine. If you’re fitting this cam on a 253, add 500 RPM to the range (roughly 3200-6300), and tune accordingly. Technical specifications (typical values) - Part No.: 5761 - RPM Range: 2700 - 5800 (308 engines) - With 1.65 Rocker: RPM Range 2700 - 5800 - Duration (Advertised): IN 292°, EX 292° - Duration @.050” (Advertised): IN 230°, EX 230° - Duration (with 1.65 Rocker): IN 292°, EX 292° - Duration @.050” (with 1.65 Rocker): IN 230°, EX 230° - Lobe Separation Angle: 109° - Lash (Measured Hot): IN.497", EX.495" (Hydraulic lifters) Product highlights - Bold, aggressive street profile aimed at higher intake and exhaust lift within a practical street RPM band. - Red/Blue/Black aesthetic calls out its performance-oriented character while remaining versatile across Holden V8 builds. - Engineered for reliability with hydraulic lifters, helping smooth operation in daily driving and occasional high-performance sessions. - Clear guidance on required upgrades (springs, retainers, ignition, headers) to extract the full potential while preserving long-term valve-train durability. Use cases - Street-driven Holden V8 builds that want a noticeable mid-range and upper-range response without the maintenance demands of solid lifters. - Projects that pair carbureted heads with upgraded exhaust and ignition for a well-rounded, responsive drive. - Builds where a lumpy, recognizable cam personality is desired along with a practical RPM window for daily driving and spirited weekend runs. Note on customization and setup - Exact RPM behavior will depend on your gear ratio, exhaust system, carburation tuning, ignition timing, and compression. Use the RPM guidance as a starting point and calibrate through dyno or drive testing to optimize for your specific setup.

RPM Range	Part No.	Duration				with 1.65 Rocker		Lobe Sep Angle	Lash Measured Hot
		Advertised		@.050”
		IN	EX	IN	EX	IN	EX		IN	EX
2700 - 5800	5761	292°	292°	230°	230°	.497''	.495''	109°	HYD	HYD