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Parts intended for competition use only*
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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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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*
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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

427 Engines

ZZ427/480 Deluxe

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Not-your-dad's Corvette engine — a modern big-block powerhouse.
Chevrolet Performance Parts 427 Big-Block Crate Engine

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Not-your-dad's Corvette engine — a modern big-block powerhouse.
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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 

Show Less

Locate a Dealer

Tech Specs

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

Cylinder Head and Valves

Cylinder Heads:

Aluminum oval port; 110cc chambers 

Valve Size (in.):

2.190 intake / 1.880 exhaust 

Measurements

Bore x Stroke:

4.250 in. x 3.750 in. 

Valve Lift (in):

.527 intake / .544 exhaust 

Camshaft Duration (@.050 in):

224° intake / 234° exhaust 

Compression Ratio:

10.1:1 

Rocker Arm Ratio:

1.7:1

Fuel and Ignition

Ignition Timing: 

36° Total @ 4,000 rpm 

Flexplate: 

14” 

Distributor: 

Billet HEI type 

Recommended Fuel:

Premium pump

View in 2025 Catalog

1969 Chevrolet Chevelle

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Engine & Transmission Packages
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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

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