Lexus GR 11.8:1 Specs: 94 x 83 mm (3.7008 x 3.2677 in), 306-313 hp

See other engines in this family

The same engine also has a main page: Toyota 2GR-FSE.

Lexus GR specs: 3.5L (211 ci) 6-cylinder, 94 x 83 mm (3.7008 x 3.2677 in) bore and stroke, 11.8:1 compression. Rated 306-313 hp. Rod ratio and piston speed.

The Lexus GR is oversquare — the 3.7008" bore exceeds the 3.2677" stroke by 13.3% — a layout that favors airflow and RPM over leverage at the crank. The 3.2677" stroke does not reach 4,000 ft/min of mean piston speed until about 7,350 RPM, so piston speed is not what limits this engine's revs — valvetrain and breathing are. Each of the 6 cylinders displaces 35.2 ci (576 cc).

11.8:1 on aluminum heads is high for a production gasoline engine; running a ratio like that on pump fuel depends on chamber design and fuel delivery rather than the number alone.

It is one of 7 engines in the GR family, sitting between the 201.4 ci and 211.8 ci members. 3 factory variants share these dimensions, rated from 306 to 313 hp. Factory fitments include the Lexus LC 500h, Lexus LS 500h, Lexus RX 450h and 10 others.

Dimensions

Displacement211 ci / 3.5 L
Bore3.7008"
Stroke3.2677"
Cylinders6
Compression ratio11.8:1
Bore/stroke ratio1.133

Construction

Block materialaluminum
Head materialaluminum
ValvetrainDOHC
Fuel typegas
Advertised HP306–313 hp

What these numbers mean

Bore/stroke character1.133 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves
Mean piston speed at 6,000 RPM3,268 ft/min — conservative for a street engine
Displacement per cylinder35.2 ci
Static compression11.8:1 — high enough that pump premium or better is normally required

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Variants sharing these dimensions (3)

These records share identical bore, stroke, displacement and compression. They differ by model year and factory power rating.

YearAdvertised HPCode
—306 hp2GR-FSE
—311 hp2GR-FKS
—313 hp2GR-FXS

Vehicles (13)

Similar engines

← All GR engines