{"product_id":"4-3l-vr38-stage-5-billet-short-block","title":"4.3L VR38 Stage 5 Billet Short Block","description":"The AMS Performance 4.3L VR38 Stage 5 Billet Short Block is engineered as the ultimate solution for high-horsepower builds in the Nissan GTR. This fully assembled short block simplifies installation, arriving ready to accept cylinder heads, manifolds, and accessories. Precision machining is performed in-house with industry-leading equipment, and the assembly occurs in a state-of-the-art, temperature and humidity-controlled clean room to guarantee unmatched precision.\n\nThis short block boasts a displacement of 4.3 liters with a 98mm bore and 94.4mm stroke, featuring AMS 98mm Big Bore Ductile Iron Dry Sleeves for increased capacity. The build includes a Bryant Racing Billet \"Stroker\" Crankshaft, Manley 300M Connecting Rods to AMS Spec, and Manley Pistons (Gas Ported) to AMS Spec. It also incorporates a BBC Rod Bearings Conversion with King Main Bearings and a full crankshaft balance job by Bryant Crankshaft. The compression ratio is approximately 10:1, with a recommended rev limit of 9000 RPM and a recommended maximum power and torque of 2200 WHP \/ 1350 lb-ft, assuming optimal conditions and supporting modifications.\n\nLeveraging AMS's two decades of race-winning experience, this engine program represents the pinnacle of VR38 performance. The increased displacement contributes to quicker spool times and improved low-end torque compared to the standard 3.8-liter factory engine. Each engine is individually handcrafted, balanced, blueprinted, and assembled to precise specifications, with detailed documentation of all tolerances, torque specs, and clearances as part of the standard quality control process.","brand":"AMS Performance","offers":[{"title":"Default Title","offer_id":52686904131896,"sku":"ALP.07.04.0305-1","price":58999.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/660674639.webp?v=1784878230","url":"https:\/\/store.motormia.co\/products\/4-3l-vr38-stage-5-billet-short-block","provider":"MOTORMIA","version":"1.0","type":"link"}