Buick 263ci Specs: 3.188 x 4.125 in

Buick 263ci specs: 3.188 x 4.125 in (81 x 104.8 mm) bore and stroke. Displacement, compression and factory ratings for each, plus rod ratio and piston speed.

At a glance

Displacement	263 ci
Cylinders	8
Bore	3.188"
Stroke	4.125"
Advertised power	120–128 hp
Years	1951–1953

This engine

Engine	Displacement	Bore × Stroke	CR	HP
Buick 263ci (1951–1953)	263 ci	3.1875" × 4.125"	—	120–128

Factory cars with a Buick 263ci

• Buick Special: 1951, 120 hp; 1951, 128 hp; 1952, 120 hp; 1952, 128 hp; 1953; 1953, 125 hp

What varies across the family

This family is represented by a single engine in the database: 263 ci, 8 cylinders, a 3.1875" × 4.125" bore and stroke.

All are undersquare — stroke larger than bore, favouring torque low in the range.

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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