Chevrolet 91ci Specs: 2.913 x 3.409 in

Chevrolet 91ci specs: 2.913 x 3.409 in (74 x 86.6 mm) bore and stroke, shared by all 3 versions. Displacement, compression and factory ratings.

At a glance

Displacement	90.8 ci
Cylinders	4
Bore	2.913"
Stroke	3.409"
Compression	10.0:1
Advertised power	160–175 hp
Years	2016–2026

Engines in this family

Engine	Displacement	Bore × Stroke	CR	HP
LYX	90.8 ci	2.9134" × 3.4094"	10:1	170
LSD	90.8 ci	2.9134" × 3.4094"	10:1	175
LFV	90.8 ci	2.9134" × 3.4094"	10:1	160–163

Factory cars with a Chevrolet 91ci

• Chevrolet Malibu: 2016, LFV, 160 hp; 2017, LFV, 160 hp; 2018, LFV, 163 hp; 2019, LFV, 163 hp; 2020, LFV, 163 hp; 2021, LFV, 163 hp; 2022, LFV, 163 hp; 2023, LFV, 163 hp; 2024, LFV, 163 hp; 2025, LFV, 163 hp
• Chevrolet Equinox: 2018, LYX, 170 hp; 2019, LYX, 170 hp; 2020, LYX, 170 hp; 2021, LYX, 170 hp; 2022, LYX, 170 hp; 2023, LSD, 175 hp; 2024, LSD, 175 hp; 2025, LSD, 175 hp; 2026, LSD, 175 hp

What varies across the family

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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