Pontiac GM 3.4L V6 Specs: 3.622 x 3.307 in

Pontiac GM 3.4L V6 (LA1/L36) specs: 3.622 x 3.307 in (92 x 84 mm) bore and stroke, shared by all 2 versions. Displacement, compression and factory ratings.

At a glance

Displacement	207 ci
Cylinders	6
Bore	3.622"
Stroke	3.307"
Compression	9.5:1
Advertised power	170–180 hp
Years	2004–2005

Engines in this family

Engine	Displacement	Bore × Stroke	CR	HP
LA1	207 ci	3.622" × 3.3071"	9.5:1	170
LA1	207 ci	3.622" × 3.3071"	—	180

Factory cars with a GM 3.4L V6 (LA1/L36)

• Chevrolet Monte Carlo: 2004, LA1, 180 hp; 2005, LA1, 180 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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