Land Rover 268ci Engine Specs

Bore, stroke, displacement and compression for all 4 Land Rover 268ci engines, compared side by side. Plus rod ratio and head specs where published.

At a glance

Displacement	268 ci
Cylinders	8
Bore	3.465–3.622"
Stroke	3.256–3.555"
Compression	10.0–10.5:1
Advertised power	282–626 hp
Years	2003–2026

Engines in this family

Engine	Displacement	Bore × Stroke	CR	HP
BMW S68	268 ci	3.5039" × 3.4764"	10.5:1	606–626
AJ-V8	268 ci	3.4646" × 3.5551"	10.5:1	300–305
M62B44	268 ci	3.622" × 3.2559"	10:1	282
BMW N63 / S68	268 ci	3.5039" × 3.4764"	10.5:1	523

Factory cars with a Land Rover 268ci

• Land Rover Range Rover: 2003, 282 hp; 2004, 282 hp; 2005, 282 hp; 2006, 305 hp; 2007, 305 hp; 2008, 305 hp; 2009, 305 hp; 2022, 523 hp; 2023, 523 hp; 2024, 523 hp; 2024, 606 hp; 2025, 523 hp; 2025, 606 hp; 2026, 523 hp; 2026, 606 hp
• Land Rover Discovery: 2005, 300 hp; 2006, 300 hp; 2007, 300 hp; 2008, 300 hp; 2009, 300 hp
• Land Rover Defender: 2025, 626 hp; 2026, 626 hp

What varies across the family

Both bore and stroke vary across the family, so these are separate castings rather than variations on one block.

1 of 4 are oversquare — bore larger than stroke, which favours revs over low-end torque.

Each engine page carries rod ratio, mean piston speed, bore/stroke character and cylinder head specs where published, and links into the calculators with its dimensions already filled in.

← All Land Rover engines