Pontiac 325ci Specs: 3.78 x 3.622 in

Pontiac 325ci specs: 3.78 x 3.622 in (96 x 92 mm) bore and stroke. Displacement, compression and factory ratings for each, plus rod ratio and piston speed.

At a glance

Displacement	325 ci
Cylinders	8
Bore	3.780"
Stroke	3.622"
Advertised power	303 hp
Years	2005–2008

This engine

Engine	Displacement	Bore × Stroke	CR	HP
LS4	325 ci	3.7799" × 3.622"	—	303

Factory cars with a Pontiac 325ci

• Pontiac Grand Prix: 2005, LS4, 303 hp; 2006, LS4, 303 hp; 2007, LS4, 303 hp; 2008, LS4, 303 hp

What varies across the family

This family is represented by a single engine in the database: 325 ci, 8 cylinders, a 3.7799" × 3.622" bore and stroke.

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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