Chevrolet Vortec 8100 Specs: 4.25 x 4.37 in

Chevrolet Vortec 8100 specs: 4.25 x 4.37 in (108 x 111 mm) bore and stroke, shared by all 2 versions. Displacement, compression and factory ratings.

At a glance

Displacement	496 ci
Cylinders	8
Bore	4.250"
Stroke	4.370"
Advertised power	320–340 hp
Years	2001–2007

Engines in this family

Engine	Displacement	Bore × Stroke	CR	HP
L18	496 ci	4.25" × 4.37"	—	—
L18	496 ci	4.25" × 4.37"	—	320–340

Factory cars with a Vortec 8100

• Chevrolet Silverado HD: 2001, L18, 340 hp; 2002, L18, 340 hp; 2003, L18, 340 hp; 2004, L18; 2007, L18, 330 hp
• Chevrolet Suburban: 2001, L18, 340 hp; 2002, L18, 340 hp; 2003, L18, 340 hp; 2004, L18, 320 hp; 2005, L18, 320 hp; 2006, L18, 320 hp

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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