Studebaker 259ci Specs: 3.563 x 3.25 in

Studebaker 259ci specs: 3.563 x 3.25 in (90.5 x 82.6 mm) bore and stroke. Displacement, compression and factory ratings, plus rod ratio.

At a glance

Displacement	259 ci
Cylinders	8
Bore	3.563"
Stroke	3.250"
Advertised power	162–195 hp
Years	1955–1964

This engine

Engine	Displacement	Bore × Stroke	CR	HP
Studebaker 259ci (1955–1964)	259 ci	3.5625" × 3.25"	—	162–195

Factory cars with a Studebaker 259ci

• Studebaker Champion / Commander: 1955, 162 hp; 1955, 185 hp; 1957, 180 hp; 1957, 195 hp
• Studebaker Hawk: 1956; 1956, 185 hp; 1959, 180 hp; 1959, 195 hp
• Studebaker Pickup: 1957; 1959
• Studebaker Lark: 1959, 180 hp; 1959, 195 hp; 1960, 180 hp; 1960, 195 hp; 1961, 180 hp; 1962, 180 hp; 1962, 195 hp; 1964, 180 hp

What varies across the family

This family is represented by a single engine in the database: 259 ci, 8 cylinders, a 3.5625" × 3.25" bore and stroke.

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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