Chevrolet 153ci Specs: 3.875 x 3.25 in

Chevrolet 153ci specs: 3.875 x 3.25 in (98.4 x 82.6 mm) bore and stroke, shared by all 2 versions. Displacement, compression and factory ratings.

At a glance

Displacement	153 ci
Cylinders	4
Bore	3.875"
Stroke	3.250"
Compression	8.5:1
Advertised power	90 hp
Years	1962–1970
Cylinder head data	1 of 2 engines

Engines in this family

Engine	Displacement	Bore × Stroke	CR	HP
Chevrolet 153ci (1962–1964)	153 ci	3.875" × 3.25"	—	90
Chevrolet 153ci · 3.875" × 3.25" · 8.5:1	153 ci	3.875" × 3.25"	8.5:1	90

Factory cars with a Chevrolet 153ci

• Chevrolet Nova: 1962, 90 hp; 1963, 90 hp; 1964, 90 hp; 1965, 90 hp; 1966, 90 hp; 1967, 90 hp; 1968, 90 hp; 1969, 90 hp; 1970, 90 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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