Camshaft profile has a direct effect on mid-range response and overall drivability of the RB25DE(T). The Tomei Poncam Camshaft Set (part number TA301B-NS06A) is a matched intake and exhaust pair designed specifically for early-production R33 RB25DE(T) engines equipped with NVCS, covering vehicles manufactured from approximately October 1996 to September 1997.
This Poncam specification uses a 256° duration and 8.50 mm lift on both the intake and exhaust sides. Positioned as a milder performance option within Tomei’s range, these shafts aim to improve airflow and throttle response while remaining well suited to street-driven and lightly modified engines. The profile is intended to work with the NVCS system on early R33 RB25 engines and provides a practical improvement over stock cams without the more aggressive characteristics of higher-lift Procam designs.
These 256-8.50 Poncam shafts are a sensible upgrade for early R33 GTS25T or similar RB25DE(T) builds looking for better response and usable power gains. Correct installation and professional tuning are recommended to extract the benefits while maintaining reliability. At Terra Firma Automotive, we supply this genuine Tomei Poncam Camshaft Set as a capable option for early R33 RB25 owners. Choose Terra Firma Automotive for authentic Japanese camshafts that support responsive, well-balanced RB25DE(T) engines.
- Genuine Tomei Poncam Camshaft Set
- Part Number: TA301B-NS06A
- Application: Early R33 RB25DE(T) with NVCS
- Production range: approximately 10.1996 – 09.1997
- Intake duration: 256°
- Exhaust duration: 256°
- Intake lift: 8.50 mm
- Exhaust lift: 8.50 mm
- Matched intake and exhaust set
- Milder Poncam profile for street and mild performance use
- Compatible with early R33 NVCS system
- Improves mid-range response and airflow potential
- Practical upgrade over stock camshafts
- Requires proper installation and tuning
- Trusted Japanese camshaft engineering
- Available from Terra Firma Automotive
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