GMC 119ci Specs: 3.425 x 3.228 in

GMC 119ci specs: 3.425 x 3.228 in (87 x 82 mm) bore and stroke. Displacement, compression and factory ratings for each, plus rod ratio and piston speed.

At a glance

Displacement	119 ci
Cylinders	4
Bore	3.425"
Stroke	3.228"
Compression	8.4:1
Advertised power	82 hp
Years	1982–1985

This engine

Engine	Displacement	Bore × Stroke	CR	HP
LR1	119 ci	3.4252" × 3.2283"	8.4:1	82

Factory cars with a GMC 119ci

• GMC S-15 / Sonoma: 1982, LR1, 82 hp; 1983, LR1, 82 hp; 1984, LR1, 82 hp; 1985, LR1, 82 hp

What varies across the family

This family is represented by a single engine in the database: 119 ci, 4 cylinders, a 3.4252" × 3.2283" 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.

← All GMC engines