The Kelford 231‑S6 Stage 2 Split‑Lobe Camshaft Set is a high-performance cam upgrade for the Nissan GT‑R R35 VR38DETT, designed to significantly improve cylinder filling efficiency, mid‑range torque, and top‑end power. Featuring Kelford’s advanced split‑lobe camshaft design, this set promotes increased intake swirl and improved combustion efficiency.

Positioned between mild street cams and full race profiles, the 231‑S6 is ideal for aggressive street, track, and roll‑racing applications where strong power delivery across a wide RPM range is required.

Camshaft Specifications

• Intake Duration: 274° / 266° (split lobe)
• Exhaust Duration: 274°
• Intake Cam Lift: 10.60mm / 10.55mm
• Exhaust Cam Lift: 10.55mm

Key Features

• Complete intake and exhaust camshaft set
• Stage 2 split‑lobe camshaft design
• Improves intake swirl and cylinder filling efficiency
• Strong gains in mid‑range and high‑RPM power
• Designed for upgraded turbocharger setups
• Ideal for street, track days, roll racing, and circuit racing
• Precision‑engineered by Kelford Cams

When Is the Kelford 231‑S6 the Right Choice?

The 231‑S6 camshaft set is best suited to VR38DETT builds that have moved beyond basic bolt‑on upgrades and require increased airflow efficiency without jumping straight to full race cam profiles.

• Engines with upgraded turbochargers (typically 48–54mm range)
• High‑performance street and track‑focused GT‑Rs
• Roll racing and circuit racing applications
• Builders seeking strong mid‑range torque with sustained top‑end power

Important Notes

• Upgraded valve springs are required
• Kelford recommends the KVS38‑BT valve spring kit
• Professional installation and ECU tuning are strongly recommended

231‑S6 vs Stage 1 Camshaft Sets

• More aggressive than Kelford 231‑A or Tomei PONCAM sets
• Greater airflow and power potential across the RPM range
• Designed for higher boost and upgraded turbo setups
• Ideal step before full race camshaft profiles

Application

• Nissan GT‑R R35
• Engine: VR38DETT

The Kelford 231‑S6 Stage 2 Split‑Lobe Camshaft Set is a proven choice for GT‑R owners building a powerful, responsive engine capable of delivering strong performance on both the street and the track.