High-lift camshafts and elevated engine speeds place significantly greater loads on the cam caps than the original RB26DETT design anticipated. Stock fasteners can become a limiting factor once valve spring pressure and RPM increase, raising the risk of cap movement or thread issues over time. The Tomei Cam Cap Stud Set (part number TA505A-NS05A) replaces the factory hardware with stronger chrome-moly studs engineered to support more aggressive cam profiles and higher engine speeds.
Manufactured from SCM435 alloy, these studs are sized M6 x 1.00 and supplied as a complete set of 28 studs and 28 nuts. Tomei rates the set for use with cam lifts up to 12.0 mm and engine speeds approaching 10,000 rpm, giving builders greater confidence when installing performance camshafts. The improved clamping force helps maintain precise camshaft alignment and reduces the chance of issues related to insufficient fastener strength in high-output RB26 builds.
At Terra Firma Automotive, we supply this genuine Tomei Cam Cap Stud Set as a recommended upgrade for Skyline GT-R R32, R33, and R34 engines running aftermarket cams or higher RPM limits. It is a straightforward yet important reinforcement that supports long-term reliability when the valvetrain is pushed beyond stock specifications. Choose Terra Firma Automotive for authentic Tomei hardware that strengthens a critical area of the RB26 cylinder head.
- Genuine Tomei Cam Cap Stud Set
- Part Number: TA505A-NS05A
- Application: Nissan RB26DETT
- Material: SCM435 chrome-moly alloy
- Thread size: M6 x 1.00
- Kit includes 28 studs and 28 nuts
- Supports cam lifts up to 12.0 mm
- Suitable for engine speeds up to approximately 10,000 rpm
- Significantly stronger than factory cam cap fasteners
- Improves clamping force on cam caps
- Recommended for high-lift camshaft installations
- Helps maintain camshaft alignment under load
- Direct fit for Skyline GT-R R32, R33, and R34
- Essential reinforcement for performance RB26 builds
- Available from Terra Firma Automotive
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