RB30 with an RB26 head vs an RB26 stroker: what the conversion involves

An RB30/26 puts the RB26 twin-cam head on an RB30 block. For a stroked RB26 block, see our RB26 2.8 vs 2.6 guide.

The RB30's longer stroke makes it bigger than a 2.8 stroker, but it's a bigger job, so plan it with your builder.

The RB30 was a single-cam engine in the Nissan R31 Skyline and the Holden VL Commodore. It was never fitted to a GT-R.

• RB26 as standard: 86.0 mm bore, 73.7 mm stroke, 2,568 cc.
• RB26 2.8 stroker: about 2,770 cc.
• RB30 as standard: 85 mm stroke and 2,962 cc.
• Nitto RB30 3.2 L kit: 90 mm stroke, 86 to 87.5 mm bores.
• Nitto also lists 3.4 L and 3.6 L kits.

An RB30/26 uses the RB30 block with its own crank, rods and pistons, plus the RB26 head and a head gasket to suit.

Nitto's kits pair a crank, rods and pistons for an RB26 head, in 3.2, 3.4 and 3.6 litres.

3.2 L standard rod | 3.2 L steel rod | 3.2 L wide journal | 3.4 L steel rod | 3.4 L wide journal | 3.6 L steel rod | 3.6 L wide journal

Nitto lists RB30 cranks with OEM or wide journals. Its DOHC pistons suit the RB26 head. Nitto's head gaskets come in 1.2, 1.5 and 1.8 mm, and its block brace comes with instructions for your machinist.

OEM journal cranks | 90 mm wide journal crank | DOHC stroker pistons | Head gaskets | Block brace

For drag builds, Bullet's RBx is a billet RB30 block.

Bullet RBx block

Nitto parts are built in Australia for your order. Tell us your build by email or the contact form and we'll confirm the parts before you pay.

RB26 head gasket and head studs