Holden V8 253 308 Red Blue Black Hydraulic Camshaft 204/214@50

Holden V8 253-308 Hydraulic Camshaft — Dual Pattern (204/214 @.050")

A hydraulic camshaft engineered for Holden V8 253-308 engines, delivering a balanced blend of mid‑range power, smooth idle and improved economy. The Red, Blue & Black dual‑pattern cam is designed for carburetted heads only and is a popular choice for LPG setups. Its versatile profile also makes it well suited to ski boats equipped with a dog clutch, offering an easy-to-manage power curve with strong mid‑range response.

• Dual pattern for LPG compatibility and flexible tuning
• Mid‑range emphasis with smooth idle and better fuel economy
• Carburettor heads only
• Popular choice for ski boats with a dog clutch
• RPM range (308): 1700–4700; for 253 engines, add 500 RPM (approx. 2200–5200)

Technical specifications

• Part No: 5666
• Advertised duration: IN 268°, EX 275°
• Duration @.050": IN 204°, EX 214°
• With 1.65 Rocker: IN 204°, EX 214°
• Lobe separation angle: 112°
• Lash, hot (measured): IN.462", EX.486" (HYD)
• Cam type: HYD

Installation notes and considerations

• Must use performance springs and performance retainers to realise the cam’s potential.
• Converter stall speed should be equal to or greater than the minimum RPM of the cam power range.
• When fitting to a 253 engine, adjust the RPM range upward by 500 RPM (roughly 2200–5200).

This Holden V8 camshaft is crafted to deliver a distinct mid‑range surge without compromising idle quality, making it a practical choice for street driving, LPG applications, and marine use where a reliable, consistent power band is valued.