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Parts intended for competition use only*
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A Chevrolet Performance Parts 632 Crate Engine

Chevrolet’s Biggest Big-Block Engine

Chevrolet’s Biggest Big-Block Engine
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Parts intended for competition use only*
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Proposition 65 Warning*
A Yellow Horsepower Icon

Up to

1004 hp

Horsepower*
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Up to

876 lb.-ft.

Torque*
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Up to

7,000

Max Rec RPM
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Up to

632 cu. in. (10.4L)

Displacement

632 Engine

ZZ632/1000 Deluxe
Chevrolet Performance Parts ZZ632 Crate Engine

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All roads lead here — the largest, most powerful Chevrolet Big-Block ever.
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Tech Specs
View in 2025 Catalog

Performance

Horsepower:

1004 hp @ 6,600 rpm

Torque:

876 lb.-ft. @ 5,600 rpm

Max Rec RPM:

7,000

Internal Components

Crankshaft:

Forged 4340 steel

Connecting Rods:

Forged steel H-beam

Pistons:

Forged aluminum 2618 alloy

Intake Manifold:

Aluminum high-rise single plane

Throttle Body:

4500-style

Camshaft Type:

Billet steel hydraulic roller

Rocker Arms:

Forged aluminum, roller style

Engine Basics

Part Number:

19432060

Engine Type:

Chevy Tall-Deck Big-Block V8

Displacement:

632 cu. in. (10.4L)

Block:

Cast iron Bowtie with 4-bolt main caps – tall deck

Balanced:

Internal

Measurements

Bore x Stroke:

4.600 in. x 4.750 in.

Valve Lift (in):

.780 intake / .782 exhaust

Camshaft Duration (@ 0.050 in):

270° intake / 285° exhaust

Compression Ratio:

12.0:1

Rocker Arm Ratio:

1.8:1 (shaft-mount)

Cylinder Head and Valves

Cylinder Heads:

Aluminum spread-port; 70cc chambers – RS-X design

Valve Size (in.):

2.450 intake / 1.800 exhaust, titanium (5/16-in stem OD)

Water Pump:

Aluminum

Fuel and Ignition

Fuel Injectors:

86-lb/hr

Oil Pan:

Steel 8-quart

Ignition Type:

58x crank-triggered, coil-near-plug

Recommended Fuel:

Premium pump (93 octane or higher)

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Tech Specs

Performance

Horsepower:

1004 hp @ 6,600 rpm

Torque:

876 lb.-ft. @ 5,600 rpm

Max Rec RPM:

7,000

Engine Basics

Part Number:

19432060

Engine Type:

Chevy Tall-Deck Big-Block V8

Displacement:

632 cu. in. (10.4L)

Block:

Cast iron Bowtie with 4-bolt main caps – tall deck

Balanced:

Internal

Measurements

Bore x Stroke:

4.600 in. x 4.750 in.

Valve Lift (in):

.780 intake / .782 exhaust

Camshaft Duration (@ 0.050 in):

270° intake / 285° exhaust

Compression Ratio:

12.0:1

Rocker Arm Ratio:

1.8:1 (shaft-mount)

Internal Components

Crankshaft:

Forged 4340 steel

Connecting Rods:

Forged steel H-beam

Pistons:

Forged aluminum 2618 alloy

Intake Manifold:

Aluminum high-rise single plane

Throttle Body:

4500-style

Camshaft Type:

Billet steel hydraulic roller

Rocker Arms:

Forged aluminum, roller style

Cylinder Head and Valves

Cylinder Heads:

Aluminum spread-port; 70cc chambers – RS-X design

Valve Size (in.):

2.450 intake / 1.800 exhaust, titanium (5/16-in stem OD)

Water Pump:

Aluminum

Fuel and Ignition

Ignition Timing:

86-lb/hr

Oil Pan:

Steel 8-quart

Ignition Type:

58x crank-triggered, coil-near-plug

Recommended Fuel:

Premium pump (93 octane or higher)
View in 2025 Catalog
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Behind the Custom Build

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

“You really can just bolt it in, connect your power and turn the key.” 
Jeff Walker & GM Team

1989 Silverado Dually
jeff walker and gm team
Overhead View of Engineers in White Lab Coats Look at an Engine

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

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 components for 632 models.

Powertrain Components
Chevrolet Performance Parts Big-Block Crank Trigger Ignition Conversion Kit

Big-Block Crank Trigger Ignition Conversion Kit
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Air Cleaner Lid – Cast Aluminum
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Build confidently with Chevrolet Performance installation guides.

ZZ632/1000

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