AMS Performance VR38 Alpha 4.0L Pro Edition Crate Engine

Description

Maximizing absolute torque output requires the AMS Performance VR38 Alpha 4.0L Pro Edition Crate Engine and its increased displacement stroker architecture. Command dominating low end spool characteristics in your GT-R during competitive roll racing. Overcoming turbo lag on massive compressor housings allows this specialized race block to spool aftermarket turbos instantly.

Engine Architecture & Core Specifications

• Block Material: OEM cast aluminum VR38DETT, CNC machined, sleeved, and clearance modified for a stroker crankshaft.
• Cylinder Heads: Short block configuration.
• Compression Ratio: Optimized custom compression ratio for high-boost E85 applications.
• Bore & Stroke: 95.5 mm bore x 94.4 mm stroke (4.0L Stroker).
• Rotating Assembly: Custom 4.0L forged aluminum pistons, heavy-duty connecting rods, and a precision billet stroker crankshaft.

Component Breakdown: Built Short Block

Increasing total displacement unlocks monumental low-end torque while eliminating turbo lag entirely.

• A specialized billet stroker crankshaft increases engine displacement to deliver massive low end torque while custom aftermarket cylinder sleeves reinforce the aluminum casting.
• Proprietary forged pistons withstand sustained high RPM thermal loads without expanding out of specification and heavy duty forged rods anchor the rotating assembly.

Vehicle Fitment & Compatibility Matrix

Designed to drop seamlessly into the factory GT-R engine bay, this stroked block aligns perfectly with factory transmission bells. Utilizing one of our custom stroked short blocks bypasses local machine shop wait times entirely.

• Fits 2009-Present Nissan GT-R R35 models requiring massive torque capabilities for large turbochargers.
• Retains factory sensor locations for seamless integration with OEM or standalone engine management systems.

Fuel & Ignition System Requirements

Supplying adequate fuel volume to a four-liter stroked engine requires massive injector capacities and capable pumps.

• Complete fuel system upgrades including brushless pumps and massive injectors are necessitated to feed high horsepower targets safely.
• E85 fuel calibration is heavily recommended alongside heat range adjusted spark plugs demanding tight gapping to hold spark under extreme boost pressures.

Installation, Break-In Oil & Priming Instructions

Proper initial lubrication procedures dictate how well the internal components handle massive torque figures over time.

• Mount the timing chain and cylinder heads onto the block and pull the ignition relays to crank the starter repeatedly to build mechanical oil pressure safely.
• Pour in a certified high zinc break in oil to establish proper piston ring seating before flushing the fluid after exactly 20 minutes of varied engine speeds.

USA Warranty, Emissions & Logistics

Fulfilling this order demands a verifiable factory core and adherence to federal off-road regulations.

• Purchasing this remanufactured race block requires sending a clean and inspectable VR38 core exchange prior to shipping to qualify for machining guarantees.
• Operating strictly for Race Use Only this package demands freight shipping delivery to a commercial loading dock or liftgate at the destination.