2UZFE: Everything You Want to Know
The 2UZFE is the second in the Toyota UZ family. Its based off of the 1UZFE, but was used in trucks and SUVS instead of luxury cars. The biggest change with the 2UZFE, is that the displacement was increased to 4.7L, which greatly increased the torque. The 2UZFE doesn’t have quite the cult following that the 1UZ does, but does it have the same tuning potential?
2UZFE: Engine Basics
Unlike the 1UZFE, the 2UZFE received an iron cylinder block. This was done to slightly increase reliability. Since the 2UZFE was designed for pickups and SUVS weight wasn’t really a concern either. Other than that, the engine design is pretty similar to the 1UZ. Its a 90* V8, with aluminum heads. There are 32 valves (4 per cylinder), and the lifters are not hydraulic, so it needs periodic valve adjustments.
Later versions of the 2UZFE received Toyota’s VVT-i system. This helped increase horsepower, torque, and fuel economy. Just like the 1UZ-FE, if the timing belt breaks it doesn’t destroy the cylinder heads. It’s a non interference engine.
- Production: 1998 – 2011
- Cylinder Block Material: Cast-Iron
- Cylinder Head Material: Aluminum
- Valve Train: DOHC, 4 valves per cylinder
- Stroke: 84mm
- Bore: 94mm
- Compression Ratio: 9.6:1
- Displacement: 4664cc
The 2UZFE came in a variety of different Toyota products. Like I mentioned before, it was designed for Toyota pickups and SUVs. The 2UZ was equipped in the Lexus GX470 and the LX470. It was also equipped in the Toyota 4Runner, Land Cruiser, Sequoia, and Tundra.
- Lexus GX470
- Lexus LX470
- Toyota 4Runner
- Toyota Land Cruiser
- Toyota Sequoia
- Toyota Tundra
2UZFE: Performance Data
Just like the 1UZFE, the 2UZFE had minor modifications done to it over the years to increase its horsepower, torque, and fuel efficiency. The biggest change would be the addition of Toyota’s VVT-i system.
- 230 horsepower @ 4,800 rpm
- 302 lb-ft @ 3,600 rpm
Minor revisions were added
- 232 horsepower @ 4,800 rpm
- 311 lb-ft @ 3,600 rpm
Toyota’s VVT-i system was added
- 271 horsepower @ 4,800 rpm
- 315 lb-ft @ 3,400 rpm
Once again, minor revisions were added
- 282 horsepower @ 4,800 rpm
- 324 lb-ft @ 3,400 rpm
As you can tell from these numbers, the 2UZFE ended up with 52 more horsepower, and 22 lb-ft more than it started with. The largest jump occurred when Toyota added VVT-i, which added an impressive 49 horsepower.
2UZFE: Tuning Potential
If you’re a car guy, or gal, than this is the part you’ve probably been waiting for. What can this engine really do? How good is it when you start throwing aftermarket parts on it? Well, since its based off of the 1UZ, most top end parts for the 1UZ will bolt right onto it.
Just like the 1UZ, the Terminator Cobra supercharger, or Eaton M90 is a common addition the 2UZFE. With the addition of fuel injectors, and an exhaust, the 2UZFE can make 380+ horsepower @ 6psi. Building the bottom end with lower compression ratio pistons, the 2UZFE can make 440+ horsepower @ 10psi.
A common, and interesting build is using the 2UZFE bottom end, and block, with all 1UZFE components. This allows you to turn your LS400 into an LS470. Its not a super common build, for the simple fact that you could build your engine with a super charger or turbo for the same amount and make more horsepower.
Just like the 1UZ, and other great Toyota engines (1jz, 2jz, etc.), the 2UZ has a ridiculously strong block. The 1UZ is praised for its ability to hold up to 1,000 horsepower on a stock block. What if I told you that the 2UZ can hold up to even more than that? After all, the 2UZ is made out of stronger cast-iron. The 1UZ is good for around 1,000 horsepower on a stock block, whilst the 2UZ is good for 1,400+ horsepower on a stock block.
1UZFE vs 2UZFE
In case you missed it, we wrote an article similar to this one covering the 1UZFE. So, how is the 2UZFE any different than the 1UZFE, and which one is better? To start off, the biggest and most obvious difference is the added displacement. The 1UZ is a 4.0L whilst the 2UZ is a 4.7L. This was done to add low end torque, which SUVs need. The 1UZ is all aluminum whilst the 2UZ is has a cast-iron block.
The 1UZ was designed for luxury sports cars and sedans, so while it is fairly torquey, it makes its best power high in the rev range. The 2UZ was designed for pickups and SUVs, so it produced much more torque down low. Things like a new intake manifold help the 2UZ achieve this.
There are other minor differences, but here are the main ones: displacement, cylinder block material, and intake manifold.
2UZFE vs 3UZFE
How does the 2UZFE stack up against the later 3UZFE? The 3UZFE is based off of the 1UZ, and shares many of its components with it. The 2UZFE has .4 liters of larger displacement, but weighs considerably more thanks to its iron block. The 3UZ’s weakness is its thin cylinder sleeves.
When it comes down it, the 2UZFE is the superior engine. Although it weighs way more, it can withstand more horsepower than the 3UZ. If you must have a UZ engine, just go with the 1UZ. It’s the best overall engine.
Overall the 2UZ is actually a lot like the 1UZFE. They are designed for different applications, but their parts are mostly interchangeable. The 2UZ is a super torquey, and super strong engine. Its relatively small compared to its competitors engines, but its makes as much torque, or more, at a lower RPM than its competitors. Let me know what you think of the 2UZFE in the comments below!