Overcoming catastrophic block failure requires the AMS Performance VR30 Red Alpha Stage 3 Performance Engine and its heavily sleeved 3.0L architecture. Command absolute confidence in your bottom end during aggressive track passes and dyno pulls. Eliminating mechanical structural weakness on the drag strip allows this compliant race block to anchor extreme twin-turbo setups reliably.

Engine Architecture & Core Specifications

- Block Material: OEM cast aluminum VR30DDTT, precision CNC bored, honed, and fitted with heavy-duty ductile iron sleeves.
- Cylinder Heads: Ships as a short block; designed to accept factory aluminum direct-injection heads.
- Compression Ratio: Maintains optimal 10.3:1 compression for off-boost drivability and extreme boost tolerance.
- Bore & Stroke: 86.0 mm bore x 86.0 mm stroke (3.39 in x 3.39 in).
- Rotating Assembly: Custom forged aluminum pistons, extreme-duty forged connecting rods, and a micro-polished factory forged crankshaft.

Component Breakdown: Built Short Block

This fully assembled bottom end incorporates heavy-duty internals designed specifically to withstand the rigors of competitive racing.

- Heavy duty ductile iron sleeves prevent cylinder wall cracking under extreme boost pressures while custom forged aluminum pistons resist extreme combustion temperatures.
- Extreme duty forged rods eliminate bending during violent low end torque spikes and premium ARP main studs provide maximum clamping force to secure the rotating assembly.

Vehicle Fitment & Compatibility Matrix

Engineered as a direct-fit replacement for factory VR30 chassis, this block accepts all OEM accessories without heavy fabrication. Securing one of our high-output V6 replacement engines guarantees a factory-level installation for high-boost repowers.

- Fits 2023-Present Nissan Z RZ34 models utilizing factory twin-turbo setups.
- Fits 2016-Present Infiniti Q50 and Q60 chassis including all 3.0t trim levels.

Fuel & Ignition System Requirements

Extracting maximum power from this built block necessitates comprehensive upgrades to the surrounding mechanical systems.

- Upgraded high pressure fuel pumps and high flow injectors are required to match massive airflow capabilities safely.
- Running E85 is heavily recommended for maximum forced induction performance utilizing one step colder spark plugs gapped properly to prevent spark blowout.

Installation, Break-In Oil & Priming Instructions

Strict adherence to pre-start protocols dictates the long-term survival of these freshly machined bearing surfaces.

- Transfer existing cylinder heads using fresh MLS gaskets and disable the fuel system to prime the oil pump manually until mechanical gauges show steady pressure.
- Fill the crankcase with a premium high zinc break in oil and perform an immediate flush after the first complete heat cycle while avoiding wide open throttle for 500 miles.

USA Warranty, Emissions & Logistics

Protecting your investment requires understanding the specific logistics and legal compliance associated with this purchase.

- This built engine requires a usable and crack free OEM VR30DDTT block core exchange to validate the purchase and activate AMS workmanship guarantees.
- Designated strictly for Race Use Only this package ships via LTL Freight requiring a commercial address with a forklift or liftgate service.