GMC Vortec 2900 Specs: 3.76 x 4.016 in

GMC Vortec 2900 (2.9L I4) specs: 3.76 x 4.016 in (95.5 x 102 mm) bore and stroke. Displacement, compression and factory ratings, plus rod ratio.

At a glance

Displacement	177 ci
Cylinders	4
Bore	3.760"
Stroke	4.016"
Compression	10.0:1
Advertised power	185 hp

This engine

Engine	Displacement	Bore × Stroke	CR	HP
LLV	177 ci	3.7598" × 4.0157"	10:1	185

What varies across the family

This family is represented by a single engine in the database: 177 ci, 4 cylinders, a 3.7598" × 4.0157" 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.

← All GMC engines