AMS Performance VR38 Stage 4 Short Block for R35 Nissan GT-R


AMS Performance VR38 Stage 4 Short Block

Available on backorder

SKU: ALP.07.04.0304-1 Categories: , Brand:

AMS Performance VR38 Stage 4 Short Block for R35 Nissan GT-R

For over two decades, AMS Performance has been a pioneer in the automotive aftermarket sector, leading the way with their advancements in forced induction. Their performance systems have earned a reputation for setting the bar for quality and innovative solutions.

Introducing the AMS Performance 4.3L VR38 Stage 4 Short Block, designed to elevate high horsepower projects in your Nissan GTR to new heights. Ready to install straight out of the box, this short block has been precisely engineered with the latest technology and machinery. It has been robustly reinforced to handle the extreme power and torque from the OMEGA and ALPHA upgrade packages. Constructed in a modern clean room that meticulously controls both temperature and humidity, AMS ensures unparalleled attention to every detail. Utilizing years of experience garnered from racing victories, AMS has created the most formidable and cutting-edge engine program for the Nissan VR38.

The Pinnacle of VR38 Engines

  • Drawing on a wealth of race-winning knowledge, AMS has advanced the VR38DETT V6 engine to create the ultimate engine program. With the introduction of exclusive AMS components, they’ve established the most powerful and reliable engine solution for the GTR, evidenced by record-setting track performances. The 4.3L VR38 Stage 4 Short Block by AMS Performance stands as the definitive choice for achieving high reliability and horsepower. Designed as a complete rotating assembly, it simplifies installation, ensuring your GTR is quickly back on the road. This engine utilizes the finest AMS spec components, adhering to the highest precision and quality standards.

Race Winning Experience Creates Higher Standards

  • Each engine built by AMS is meticulously handcrafted, embodying the same level of care as those in their world-record-setting race cars. Choosing an AMS engine represents an investment in the extensive knowledge amassed from assembling thousands of race engines over more than 20 years. Mirroring the approach taken with their 3000+ WHP race cars, every engine is balanced, blueprinted, and assembled according to strict specifications. Prior to assembly, each block undergoes a thorough inspection for accurate dimensions, cylinder bore, main alignment, block flatness, and more, ensuring the optimal foundation for the new engine. Furthermore, AMS maintains an archived spec sheet for every engine they build, detailing tolerances, torque specifications, and clearances as a key component of their quality control process.


  • The perfect solution for high horsepower builds
  • Fully assembled short block ready for heads, 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

Technical Specifications

  • Displacement: 4.3L
  • Bore: 98mm
  • Stroke: 94.4mm
  • Appx. Compression Ratio: 10 : 1
  • Recommended Rev Limit: 8600rpm
  • Recommended Max Power & Torque: 1900whp / 1200lb-ft

Build Sheet

  • Inspect and blueprint engine block
  • AMS 98mm Big Bore Ductile Iron Dry Sleeves
  • Hone / recondition cylinder to size
  • Deck block
  • Main girdle reinforcement and 12mm 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
  • 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.
  • Assuming that a good condition core is sent in to build from, this requires a usable block and crank complete with engine girdle and oil squirters
  • 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.

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions.
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