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Parts intended for competition use only*
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Proposition 65 Warning*
A Chevrolet Performance Parts 427 Crate Engine

Classic L88 with a Modern Twist

Classic L88 with a Modern Twist
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Parts intended for competition use only*
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Proposition 65 Warning*
A Yellow Horsepower Icon

Up to

480 hp

Horsepower*
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Up to

490 lb.-ft.

Torque*
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Up to

6,400

Max Rec RPM
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Up to

427 cu. in. (7.0L)

Displacement
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Up to

480 hp

Horsepower*
Two Yellow Gears Slightly Apart with an Arrow Pointing at a Curve from the Left One to the Other

Up to

490 lb.-ft.

Torque*
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Up to

6,400

Max Rec RPM
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Up to

427 cu. in. (7.0L)

Displacement

427 Engines

ZZ427/480 Deluxe
Chevrolet Performance Parts 427 Big-Block Crate Engine

View ZZ427 / 480 Deluxe

Not-your-dad's Corvette engine — a modern big-block powerhouse.
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View ZZ427 / 480 Deluxe

Tech Specs
View in 2025 Catalog

Performance

Horsepower:

480 hp @ 6,000 rpm

Torque:

490 lb.-ft. @ 3,800 rpm

Max Rec RPM:

6,400

Internal Components

Crankshaft:

Forged steel

Connecting Rods:

Forged steel 

Pistons:

Forged aluminum

Intake Manifold: 

Dual plane 

Carburetor: 

770-cfm 

Camshaft Type:  

Hydraulic roller 

Rocker Arms: 

Aluminum roller-style 

Water Pump: 

Aluminum short-style 

Engine Basics

Part Number:

194331572 

Engine Type:

Chevy Big-Block V8 

Displacement:

427 cu. in. (7.0L) 

Block:

Cast iron with 4-bolt main caps 

Balanced:

Internal

Measurements

Bore x Stroke:

4.250 in. x 3.750 in. 

Valve Lift (in):

.527 intake / .544 exhaust 

Camshaft Duration (@ 0.050 in):

224° intake / 234° exhaust 

Compression Ratio:

10.1:1 

Rocker Arm Ratio:

1.7:1

Cylinder Head and Valves

Cylinder Heads:

Aluminum oval port; 110cc chambers 

Valve Size (in.):

2.190 intake / 1.880 exhaust 

Fuel and Ignition

Ignition Timing: 

36° Total @ 4,000 rpm 

Flexplate: 

14” 

Distributor: 

Billet HEI type 

Recommended Fuel: 

Premium pump 

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Locate a Dealer

Tech Specs

Performance

Horsepower:

480 hp @ 6,000 rpm

Torque:

490 lb.-ft. @ 3,800 rpm

Max Rec RPM:

6,400

Engine Basics

Part Number:

194331572 

Engine Type:

Chevy Big-Block V8 

Displacement:

427 cu. in. (7.0L) 

Block:

Cast iron with 4-bolt main caps 

Balanced:

Internal

Measurements

Bore x Stroke:

4.250 in. x 3.750 in. 

Valve Lift (in):

.527 intake / .544 exhaust 

Camshaft Duration (@ 0.050 in):

224° intake / 234° exhaust 

Compression Ratio:

10.1:1 

Rocker Arm Ratio:

1.7:1

Internal Components

Crankshaft:

Forged steel

Connecting Rods:

Forged steel 

Pistons:

Forged aluminum

Intake Manifold: 

Dual plane 

Carburetor: 

770-cfm 

Camshaft Type:  

Hydraulic roller 

Rocker Arms: 

Aluminum roller-style 

Water Pump: 

Aluminum short-style 

Cylinder Head and Valves

Cylinder Heads:

Aluminum oval port; 110cc chambers 

Valve Size (in.):

2.190 intake / 1.880 exhaust 

Fuel and Ignition

Ignition Timing: 

36° Total @ 4,000 rpm 

Flexplate: 

14” 

Distributor: 

Billet HEI type 

Recommended Fuel: 

Premium pump 
View in 2025 Catalog

Behind the Custom Build

Stories from iconic builders and their big-block-inspired builds.

“

After we built the car, it just keeps running great.”

"After we built the car, it just keeps running great.”

Cory & Joseph Larsen

1969 Chevelle
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Prestigious Automotive Roots

A look back at the Big-Block
Engine Family History.

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Featured Event

Best Engines of the 2024 Indianapolis Bowtie Nationals
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Engine & Transmission Packages
Engine & Transmission Packages

Factory-matched Connect & Cruise* engine-and-transmission combinations that deliver.
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A Chevrolet Performance Parts Connect and Cruise Powertrain System
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"It simplifies the whole project. If you have any issues, you plug into it, and you work on it and go from there. It makes it so simple."

Talbert Goldman
Mike Goldman Customs

Assemble the Dream Powertrain System

Compatible transmissions and components for 427 models.

Build confidently with Chevrolet Performance installation guides.

ZZ427 / 480

Find dealers ready to help you with Chevrolet Performance Parts.
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