Buick 3800 V6 Supercharged Engine Specs

Buick 3800 V6 Supercharged specs: 3.799 x 3.402 in (96.5 x 86.4 mm) bore and stroke, shared by all 2 versions. Displacement, compression and factory ratings.

At a glance

Displacement	231 ci
Cylinders	6
Bore	3.799"
Stroke	3.402"
Compression	8.5:1
Advertised power	240 hp
Years	1997–2005

Engines in this family

Engine	Displacement	Bore × Stroke	CR	HP
L67	231 ci	3.7992" × 3.4016"	8.5:1	240
L67	231 ci	3.7992" × 3.4016"	—	240

Factory cars with a 3800 V6 Supercharged

• Buick Regal: 1997, L67, 240 hp; 1998, L67, 240 hp; 1999, L67, 240 hp; 2000, L67, 240 hp; 2001, L67, 240 hp; 2002, L67, 240 hp; 2003, L67, 240 hp; 2004, L67, 240 hp
• Pontiac Grand Prix: 1997, L67, 240 hp; 1998, L67, 240 hp; 1999, L67, 240 hp; 2000, L67, 240 hp; 2001, L67, 240 hp; 2002, L67, 240 hp; 2003, L67, 240 hp
• Chevrolet Impala: 2004, L67, 240 hp; 2005, L67, 240 hp
• Chevrolet Monte Carlo: 2004, L67, 240 hp; 2005, L67, 240 hp

What varies across the family

All 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.

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