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The 602 crate motor has become one of the most popular entry level performance engines for grassroots racing and street projects. Known for affordability, durability, and consistent output, the GM 602 crate engine is widely used in circle track racing, hobby stock classes, and budget friendly performance builds.
If you are considering a 602 crate motor for your next project, understanding its specifications, strengths, and supporting components will help you make the right decision.
What Is A 602 Crate Motor?
The 602 crate motor is a factory sealed small block Chevy engine produced by General Motors Performance Parts. It is commonly referred to as the GM 602 crate engine and is often used in racing classes that require sealed, unmodified engines to maintain parity and control costs.
This engine is based on the classic 350 cubic inch small block platform. It is designed to provide reliable horsepower with minimal maintenance while remaining affordable for racers and enthusiasts.
602 Crate Engine Specifications
The typical 602 crate motor features a cast iron block, cast iron cylinder heads, and a hydraulic flat tappet camshaft. It uses a four bolt main block design for strength and durability.
Horsepower output is generally rated around 350 horsepower with torque figures in the mid 390 lb ft range, depending on configuration and tuning.
Compression ratio is typically around 9:1, making it compatible with pump gasoline in many applications.
Always confirm the exact specifications for the engine version you are purchasing, as minor variations may exist.
Why The 602 Is Popular In Racing
One of the biggest advantages of the 602 crate motor is its sealed design. Many racing organizations require a factory seal to ensure engines remain unmodified. This helps create a level playing field and keeps costs under control.
The 602 engine provides consistent performance across competitors, which shifts the focus to chassis setup and driver skill.
Its durability also makes it well suited for weekly racing programs where reliability is critical.
Street Applications And Budget Builds
Although commonly associated with racing, the 602 crate motor can also be used in street builds. It offers a simple, proven small block Chevy platform that works well in classic muscle cars, hot rods, and custom projects.
With proper carburetor selection, ignition tuning, and exhaust setup, the 602 can provide strong throttle response and reliable performance for street use.
Supporting Components To Consider
Choosing the right supporting components is essential to get the most from your 602 crate engine.
A properly matched carburetor and intake manifold ensure optimal airflow. Ignition components such as a quality distributor and performance spark plug wires help maintain consistent spark energy.
Exhaust headers and a free flowing exhaust system can improve horsepower and torque. Cooling system upgrades, including a high quality radiator and electric fan, help maintain stable operating temperatures.
Selecting the correct motor mounts, oil pan, and accessory drive components is also important for proper installation.
Transmission And Drivetrain Matching
Pairing the 602 crate motor with the right transmission and rear gear ratio enhances overall performance. In racing applications, gearing is often chosen to match track length and engine rpm range.
For street builds, selecting a transmission that complements the engine’s torque curve improves drivability and acceleration.
Is The 602 Crate Motor Right For You?
If you are looking for a cost effective, reliable small block engine with proven performance, the 602 crate motor is a strong option. It is especially attractive for racing classes that require sealed engines and for enthusiasts seeking a straightforward 350 small block solution.
At www.jegs.com, you will find 602 crate engines and a wide selection of compatible components including carburetors, ignition systems, headers, cooling parts, and drivetrain upgrades.
If you need help selecting parts to complete your 602 crate motor installation, the JEGS Tech Specialists are available to help you choose the right components for your project and performance goals.
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