AMS Performance VR38 Stage 6 Billet Pro Mod Short Block for R35 Nissan GT-R



AMS Performance VR38 Stage 6 Billet Pro Mod Short Block

These items are typically not in stock and either made-to-order or special order from the manufacturer. After you order we will confirm the estimated lead time and other order details. If you have a specific deadline to receive this order please talk to us before placing your order to ensure that the manufacturer can meet your expectations.
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This item and any similar items are not CARB approved and therefore not for sale in the state of California or other states that require CARB certification. No assessment is being made regarding this product's compliance with the EPA's anti tampering policy, only that the necessary testing and validation has not been completed. Please check with your local enforcement officials regarding legality of use in your place of residence.
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AMS Performance VR38 Stage 6 Billet Pro Mod Short Block for R35 Nissan GT-R

For over twenty years, AMS Performance has been at the forefront of innovation within the automotive aftermarket industry, earning recognition for its advancements in forced induction technology. Their performance systems have set new benchmarks for quality and innovation.

The AMS Performance 4.3L VR38 Stage 6 Billet Pro Mod Short Block offers the ultimate high-horsepower solution for Nissan GTR owners. Ready to install, this short block is precisely machined with state-of-the-art equipment in-house. It’s been extensively fortified to accommodate the immense power and torque from the OMEGA and ALPHA upgrade packages. Built in a meticulously controlled clean room, every component is fine-tuned to ensure unmatched quality. Leveraging decades of race-winning expertise, AMS has developed the most formidable and sophisticated engine program for the Nissan VR38.

The Pinnacle of VR38 Engines

  • Harnessing years of success on the racetrack, AMS has enhanced the VR38DETT V6 engine, culminating in the premier engine program. With the introduction of bespoke AMS components, this program offers unmatched strength and sophistication for the GTR, validated by impressive track performance. The 4.3L VR38 Stage 6 Billet Pro Mod Short Block represents the apex of reliability and horsepower. Engineered as a comprehensive rotating assembly, it ensures a smooth integration into your GTR, featuring the highest-quality AMS-spec components.

The Ultimate Aerospace Grade Billet Engine Block

  • The AMS Performance R35 GT-R Billet Block stands as the epitome of engine innovation. Central to the success of the world’s first 6-second GTR and the renowned ALPHA Omega GTR, this billet short block is a key component of victory. It incorporates alloy steel main caps with splayed bolts and a skirted design for unparalleled crankshaft support. Custom ductile iron sleeves and reinforced walls allow the block to withstand significant pressures, increasing displacement to 4.3 liters for better spool times and enhanced low-end torque over the standard 3.8-liter engine. For those striving for top-tier competition, the AMS Performance VR38 R35 GT-R Pro Billet Series Block is essential.

Race Winning Experience Creates Higher Standards

  • The precision and care infused into AMS engine builds reflect the quality of their championship-winning race vehicles. Choosing an AMS engine means tapping into a legacy of racing engine excellence that spans over two decades. Each engine, balanced, blueprinted, and assembled, meets the high-performance standards of AMS’s 3000+ WHP race cars. Thorough block inspections ensure a solid base for each engine, and comprehensive spec sheets detail every aspect of their specifications, underscoring AMS’s dedication to quality.


  • The perfect solution for high horsepower builds
  • Fully assembled short block ready for heads, manifolds, and accessories
  • Incorporates AMS Billet Block for exceptional strength
  • Assembled in state-of-the-art temperature and humidity controlled clean room
  • New OEM gaskets, seals, and hardware throughout

Technical Specifications

  • Displacement: 4.3L
  • Bore: 98mm
  • Stroke: 94.4mm
  • Appx. Compression Ratio: XX : 1
  • Recommended Rev Limit: 9000rpm
  • Recommended Max Power & Torque: 3000whp / 1500lb-ft

Build Sheet

  • AMS OMEGA Spec Billet Engine Block
  • AMS extreme duty head gasket sealing solution
  • AMS 98mm Big Bore Ductile Iron Dry Sleeves
  • Hone and size to T1 “Pro Mod” Piston spec
  • Bryant Racing Billet “Stroker” Crankshaft
  • T1 “Pro Mod” Piston set
  • GRP Aluminum Connecting Rods (BBC Bearing spec)
  • Bryant Crankshaft full balance job
  • King Main Bearings
  • BBC Modified Rod Bearings
  • New OEM seals and gaskets
  • Multiple stage cleaning and prep process


  • 2009+ Nissan GT-R: R35  |  3.8L TT V6 VR38DETT

Other Stages


  • Horsepower, torque figures, and RPM limits are estimations and can differ widely due to various influences like turbocharger choice, intake and exhaust constraints / backpressure, as well as fuel octane and quality, among other factors. The numbers provided here are derived under ideal conditions with the right supporting modifications and represent achievable outcomes for the typical customer. However, individual results may differ.
  • No core components required for Stage 6 Billet Pro Mod Short Block
  • Fits all USDM, JDM, Gulf, and European (LHD & RHD) CBA, DBA, EBA & 4BA models

CARB and / or EPA Compliance Testing Not Completed

  • They believe that this product is either applicable for a CARB EO exemption or complies with the EPA’s Anti-Tampering Policy, yet the necessary testing and administrative processes have not been completed at this time. Consequently, this product is not available for purchase for emissions-controlled vehicles situated within California, nor can it be shipped to addresses in California, without a completed AMS Race Waiver form. Users outside of the United States are advised to comply with their local laws and regulations.

About AMS Performance

AMS Performance stands out in the realm of turbocharged vehicle enhancement, not just as a frontrunner in the manufacturing of automotive performance parts but also by providing comprehensive services including in-house engine computer calibration, installations of parts and packages, along with engine and transmission building. Distinctively an engineering-driven entity, AMS differentiates itself from other outfits by designing parts that set the performance standard in the industry, utilizing advanced computer-aided designs and the expertise of mechanical engineers with extensive motorsports background. Since its inception 20 years ago, AMS Performance has maintained its leading position, offering everything from turn-key solutions to bespoke components tailored to surpass a variety of performance objectives. Catering to a wide range of motorsport activities from drag racing to road racing, AMS is dedicated to elevating the driving experience for enthusiasts across the spectrum.

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