Crow Cams Nissan RB30 NA SOHC
Crow Cams Nissan RB30 NA SOHC
Nissan RB30 NA SOHC — 503NA
A mild upgrade profile for naturally aspirated RB30 SOHC engines.
Camshaft specifications
| Supplier part number | 503NA |
|---|---|
| Supplied position | Single camshaft — inlet and exhaust lobes |
| Operating range | 2000 - 5800 rpm |
| Advertised duration — inlet / exhaust | 250° / 250° |
| Duration at 0.050 inch — inlet / exhaust | 194° / 194° |
| Valve lift — inlet / exhaust | .426'' / .426'' |
| Hot valve lash — inlet / exhaust | HYD / HYD |
| Rocker ratio used for listed valve lift | 1.6:1 |
| Lobe separation angle | 110° |
Supplied contents
One camshaft. Springs, retainers, installation hardware are separate.
Application and fitting
Performance valve springs are required for this profile.
For RB30 SOHC cylinder heads. Select the naturally aspirated or turbo application by the exact part number. BBT can confirm Holden VL RB30 compatibility; this is not a twin-cam conversion profile.
Supporting parts
The following are separate supplier-listed components. BBT can check which are required for your installation.
- 10720-12 — RB30 Standard Chrome Moly Retainers - Set of 12
- 5833-12 — Dual Valve Springs - Nissan RB30
- ZDDP-2 — Dura Cam ZDDP Oil Additive - 2 pack
Contact BBT for parts without a product link.
BBT installation support
Have the installer verify cam timing, piston-to-valve clearance, spring installed height, coil-bind and retainer-to-seal clearance on the actual engine. Confirm the lash or preload procedure for the supplied cam and follow its lubrication and run-in instructions. BBT can assist with part selection, installation and calibration.
Product System
- Engine Parts
Vehicle Fitment
- Holden Commodore Vl Rb30E
- Holden Commodore Vl Rb30Et
- Nissan Skyline R32 Rb30
- Nissan Skyline R33 Rb30
- Nissan Skyline R34 Rb30
Confirm chassis, engine, drivetrain and production-year compatibility before ordering.
Built by Boost & Tune Support
BBT can assist with fitment review, installation, supporting modifications, configuration and calibration requirements where applicable.