AMS Performance Nissan R35 GTR 4.1L VR38 Stage 4 Long Block (ALP.07.04.0504-1)

The AMS Performance 4.1L VR38 Stage 4 Long Block is a top-tier solution for high-horsepower Nissan GTR builds. This fully assembled stroker engine is precision-engineered using advanced in-house equipment and strategically strengthened to handle the immense power of OMEGA and ALPHA performance packages. Assembled in a state-of-the-art clean room, AMS applies its extensive race-winning experience to create the most advanced and reliable engine program for the GTR. The long block comes complete with all components, from valve covers to oil pan, ensuring a hassle-free installation, and features only the finest AMS proprietary and custom-designed parts for optimal performance.

Vehicle Fitment:
2009-2011 Nissan R35 GT-R (CBA)
2012-2016 Nissan R35 GT-R (DBA)
2017-2019 Nissan R35 GT-R (Facelift DBA / “EBA”)
2020+ Nissan R35 GTR (4BA)
(Fits all LHD & RHD USDM, JDM, Gulf, and European Models)

Technical Specs:
Displacement: 4.1 liters
Bore: 95.5 mm (Grade 1, 2, or 3 varies)
Stroke: 94.4 mm
Appx. Compression Ratio: 9.75:1
Recommended Rev Limit: 8600 RPM*
Recommended Max Power & Torque: 1700 WHP / 1200 lb-ft*

Build Sheet:
AMS Stage 3 Short Block
• Inspect and Blueprint Engine Block
• Hone / Recondition Cylinder to Size
• Main Girdle Reinforcement and 12mm ARP Studs
• Hone Main Journals to AMS Spec
• Bryant Racing Billet “Stroker” Crankshaft
• Manley 300M Connecting Rods to AMS Spec
• Manley Pistons to AMS Spec
• BBC Rod Bearings Conversion
• Bryant Crankshaft Full Balance Job
• King Main Bearings
• BBC Modified Rod Bearings
• New OEM Seals and Gaskets
• New OEM Timing Chains
• AMS Proprietary Timing System Upgrade
• AMS OEM Oil Pump Rebuild and Pressure Modification
• Multiple Stage Cleaning and Prep Process
• ARP CA 625+ Head Studs
• Cometic Head Gaskets
• AMS Billet Deep Oil Pan
• ATI Crank Balancer
• Sterling Charcoal Powder Coated Timing Covers

AMS Stage 4 Head Package
• T1 Race Development Stage 1 CNC Head Porting Package
• Cylinder Head Recondition, Clean, Reassemble
• Ferrea High Performance Valve Job
• Deck / Resurface
• Shim and Set Valve Lash
• Ferrea +1 Valves, Dual Valve Springs, Titanium Retainers, Lock, Seals, Seats, Bronze Valve Guides
• Tomei 282 Camshafts
• Combustion Chamber / Head Gasket Reinforcement Modifications w/included Hardware
• Proprietary Cylinder Head and Cam Shaft Modifications


Features:
• The perfect solution for high horsepower builds
• Best suited for the Omega 18X turbo kit (Up to 68mm inducers)
• Fully assembled long block ready for manifolds and accessories
• Precision machining with advanced industry leading equipment
• Assembled in state-of-the-art temperature and humidity controlled clean room
• Utilizes your existing engine as a core to build from
• New oem gaskets, seals, and hardware throughout
• ARP CA625+ head studs for additional clamping force and head gasket sealing

Benefits of a R35 GTR Stroker Engine Build:
A stroker engine upgrade offers enhanced performance, including improved engine response and increased horsepower. By expanding engine displacement, such as from 3.8L to 4.1L, the engine’s power output is elevated. The longer stroke allows for a larger fuel/air mixture, which boosts torque, especially in lower revs. However, this increased piston travel may slightly hinder the engine’s ability to reach higher RPMs, impacting overall responsiveness. Ultimately, the longer crankshaft throws increase the engine’s air capacity, which contributes to higher horsepower.

• *Horsepower and torque numbers, as well as RPM limits, are estimates that can vary significantly based on factors like turbo selection, intake and exhaust systems, and fuel quality. These numbers reflect optimal conditions but results may vary depending on your setup.
• Due to occasional supply chain delays, component substitutions may be necessary. Your AMS Sales Representative will notify you of any changes during the assembly process.
• A complete, good-condition long block core is required. Please ensure it is fully assembled, including valve covers, oil pan, timing covers, and crank pulley. Unusable parts will be quoted for replacement during assembly.

Shipping Times:
Please note that all engines are built to order and can take 2-8 weeks. Please call to confirm a more precise ETA.

Benefits of an AMS Built Long Block Engine:
All AMS-built engines are meticulously handcrafted, using the same precision and care as in our world record-setting race cars. By opting for an AMS engine, you benefit from over 20 years of experience building thousands of high-performance engines. Each motor is balanced, blueprinted, and assembled to the exact specifications required for our 3000+ WHP race cars. Before assembly, the block is thoroughly checked for dimensional accuracy, cylinder bore, main alignment, and block flatness to ensure the best possible foundation for your engine. Every engine we assemble is accompanied by a detailed spec sheet documenting tolerances, torque specs, and clearances.

Discounts:
We are sorry, discounts and codes are not available for AMS Products.

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