AMS Performance VR38 Stage 5 Long Block for R35 Nissan GT-R



AMS Performance VR38 Stage 5 Long 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.
Guaranteed Safe Checkout
Payment Options - American Express, Discover, Visa, MasterCard, JCB, Maestro Credit Cards Payment Options - Apple Pay, PayPal, Splitit, Dinser Club International, Union Pay Credit Cards
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.
Additional Info
Shipping policy

AMS Performance VR38 Stage 5 Long Block for R35 Nissan GT-R

For more than twenty years, AMS Performance has been at the forefront of automotive aftermarket innovation, especially in the area of forced induction. Their performance systems have been celebrated for establishing new standards of quality and innovation.

Introducing the AMS Performance 4.3L VR38 Stage 5 Long Block, designed for maximizing horsepower in Nissan GTRs. This long block, which is fully assembled and ready for easy installation, is produced with the highest precision using the latest technology available at AMS. It has been extensively fortified to handle the incredible power and torque from the OMEGA and ALPHA upgrade packages. Constructed in an advanced clean room that meticulously controls both temperature and humidity, AMS ensures that every aspect of this engine is refined to the highest degree. Drawing on years of successful racing experience, AMS has developed the most robust and sophisticated engine program for the Nissan VR38.

The Pinnacle of VR38 Engines

  • Leveraging a legacy of racing victories, AMS has elevated the VR38DETT V6 engine to the highest level of engine performance. Through the creation of unique AMS components, they’ve established an unparalleled engine program for the GTR, proven by impressive track performances. The 4.3L VR38 Stage 5 Long Block from AMS Performance stands as the premier choice for achieving unmatched reliability and horsepower. Engineered as a full assembly for a straightforward installation, it ensures your GTR is ready to perform with minimal effort. Utilizing only the finest AMS spec components, both off-the-shelf and custom-designed, this engine meets the strictest standards of quality.

Race Winning Experience Creates Higher Standards

  • The construction of AMS engines reflects the meticulous care and precision of their championship-winning race vehicles. Selecting an AMS engine offers access to a rich history of racing engine development spanning two decades. Each engine is carefully balanced, blueprinted, and assembled to meet the high-performance standards seen in their 3000+ WHP race vehicles. Comprehensive inspections of each block ensure a solid foundation for the engine. Furthermore, AMS documents the specifications of each engine in detailed spec sheets, recording tolerances, torque specifications, and clearances, affirming their commitment to unmatched quality.


  • The perfect solution for high horsepower builds
  • Best suited for turbo kits 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

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

  • AMS Stage 5 Short Block
    • Inspect and blueprint engine block
    • AMS 98mm Big Bore Ductile Iron Dry Sleeves
    • 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
  • AMS Stage 5 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 with included hardware
    • Proprietary cylinder head and cam shaft modifications


  • 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.
  • It is assumed that a long block in good condition is provided for the build. To prevent confusion and the risk of missing parts, it is requested that all long blocks be shipped fully assembled, from valve covers to oil pan, including timing covers and crank pulley. Any components found to be in non-reusable condition will be identified and replacements will be quoted during the engine assembly process.
  • 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.

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.
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 here.
We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at with any inquiries.


There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.

Stay up to date with the latest product releases, Bulletproof Automotive builds and more. Sign up for our newsletter to receive the most up to date information in the aftermarket tuning world, and bring your build to a whole new level.