Part Number: 19256938
Engine Type: Chevy Big-Block V-8
Displacement (Litre): 8.0L
Displacement (cu in): 488
Bore x Stroke (in): 4.270x4.250
Block (P/N 19256820): Tall Deck (10.2")
Fuel Requirements: LPG/CNG
Crankshaft (P/N 19300876): Forged steel
Connecting Rods (P/N 19256831): Forged steel
Firing Order: 1-8-7-2-6-5-4-3
Connecting Rod Ratio: 1.58:1
Pistons (19256829): Hypereutictic w/anodized top ring land
Camshaft Type (P/N 12556291): Hydraulic Roller
Cylinder Heads (P/N 19256827): Fast Burn Iron
Damper (P/N 19256830) Cast Iron
Valve Train: Fully Adjustable
Compression Ratio: 9.9:1 nominal
Crankcase capacity: 8 Qts
Maximum Recommended rpm: 4,500
315 HP @ 4500 rpm (CNG)
375 HP @ 4200 rpm (gasoline)
390 LB-FT @ 3500 rpm (CNG)
475 LB-FT @ 3200 rpm (gasoline
A Big-Block for your truck – and it’s
compatible with gasoline, CNG, or LPG!
When it comes to grunt work – like pulling your car hauler or offshore
racing boat – Chevrolet Performance’s new, heavy-duty 8.0L Big-Block
does the job like no other engine.
This latest edition of the classic Big-Block is all about torque and makes
up to 475 lb.-ft. (on gasoline) by only 3,200 rpm – and maintains a
smooth, flat and useful torque band across the entire rpm range. That
gives your truck the power to pull just about anything and flatten the
The 8.0L is built with a tall-deck (10.2-inch deck height) version of our
latest Big-Block casting, which features full-length water jackets, thicker
main bearing webs and four-bolt main caps. It also uses a forged steel
crankshaft and forged connecting rods for optimum strength. A long,
4.250-inch stroke helps maximize the torque.
This modern Big-Block is equipped for a crank-triggered ignition system
and features a 4X camshaft and 58X crankshaft reluctor wheels to
support it. The engine can support fuel injection and also has a provision
for a mechanical fuel pump.* Our assembly comes with heads and a
balancer installed. An induction system, ignition, starter, water pump
and other accessories are required to finish the engine.
NOTE: This engine requires an intake manifold designed for a tall-deck block.
Chevrolet Performance intake manifold P/N 88961161 was used in development.
Conventional big-block intake manifolds can be used with spacers (not included).
*Production 8.0L camshaft does not have a fuel pump lobe.
*Chevrolet Performance Crate Engines include a 24-month
or 50,000-mile/80,000-kilometer limited warranty.
Sale Price: $6,766.18
List Price: $6,932.56