Toyota 1uz Block
By the Editorial Staff
March 24, 2026
Our "standard" UZ Toyota V8 build has no problem holding 800 HP, but we also have options to do well over 1000+ HP!Standard short block build does not include heads (optional extras) but includes:Full inspection of all critical measurements Eagle rods with standard ARP 8740 boltsCP/JE forged pistons and rings (optional upgrades include ceramic coated piston face, moly. The Toyota UZ engine family is a gasoline [1] fueled 32-valve quad-camshaft V8 piston engine series used in Toyota's luxury offerings and sport utility vehicles. [2] Three variants have been produced: the 1UZ-FE, 2UZ-FE, and 3UZ-FE.
Production spanned 24 years, from 1989 to mid 2013, ending with the final production of the 3UZ-FE-powered Toyota Crown Majesta I-FOUR. [3] Toyota's UZ engine. Discover why the 1UZ engine remains a top choice for performance and reliability decades after its debut in this detailed guide.
What is the 1UZ-FE 4.0L Engine? Is it good or bad? Read about Toyota 1UZ-FE 4.0L Engine design and features, its the most common problems and relaibility. The Toyota 1UZ-FE is a 4.0 L (3,968 cc, 242.1 cu in) V8, four-stroke cycle water-cooled naturally aspirated internal combustion gasoline engine, manufactured by the Toyota Motor Corporation since 1989 to 2004. The 1UZ-FE engine has 8 cylinders in a V-arrangement at a bank angle of 90° The 1UZ.
The Toyota Crown Majesta and the Lexus SC 400 were also powered by this engine, albeit with some minor adjustments. In terms of performance specs, the 4.0-liter (3968 cc) 1UZ-FE produced 256 hp at 5400 rpm along with 245.4 lb-ft of torque (333 Nm). These figures increased significantly as Toyota continued development during the following model.
In this article, we cover the famous Toyota 4.0 V8 1UZ-FE engine. Learn about 1UZ-FE reliability, performance, performance mods and more. Shop main studs, rod bolts, and fasteners for Toyota 1UZ short blocks.
Built for strength, precision, and performance. Hughes Race Built. The 1UZ-FE features aluminum cylinder block with a five-bearings crankshaft and two aluminum heads with two camshafts (DOHC) and four valves per cylinder (32 in total).
Until 1994 the Toyota 1UZ-FE engine is equipped with Multi-port fuel injection (MFI) system, and after 1994 it used Sequential multi-point fuel injection (SFI). The 4.0L, 242 cid, all-alloy 1UZ-FE debuted in 1989 in the first-generation Lexus LS 400/Toyota Celsior, and the engine was progressively released across a number of other models in the Toyota/Lexus range. The engine is oversquare by design, with a bore and stroke of 3.440˝ and 3.250˝, respectively.