How much horsepower does a Chevy 572 have?
The most common Chevy 572 crate engine produces 720 horsepower in the ZZ572/720R model, while another Chevrolet option, the ZZ572/620, delivers about 620 horsepower. Exact output can vary depending on configuration, fuel, and tuning.
To understand the question in more detail: the 572 refers to a 572 cubic inch big-block engine that Chevrolet Performance offers in several crate-engine variants. These versions are built for high performance in street, strip, and showroom builds, but their horsepower ratings depend on specific components and calibrations. Readers should note that horsepower figures can differ between crate models and individual builds, and real-world output may vary with exhaust, induction, compression, and dyno testing.
Common 572 options from Chevrolet Performance
Here are the two primary factory 572 crate-engine options that most buyers encounter, along with their horsepower figures.
- ZZ572/720R — 720 horsepower and about 680 lb-ft of torque.
- ZZ572/620 — 620 horsepower and around 650 lb-ft of torque.
These figures come from Chevrolet Performance specifications for each crate engine. Actual output can vary based on fuel, exhaust, intake, and tuning processes, as well as the measurement standards used during dyno testing.
Additional context and considerations
Beyond the two mainstream crate options, many builders customize 572 engines, resulting in a wide range of horsepower—some builds approach or exceed 900 horsepower on race fuel, while more street-oriented setups may stay in the 570–620 hp range. The exact number depends on compression ratio, cam profile, induction (EFI vs. carbureted), exhaust, and fueling strategy.
Choosing and tuning a 572
When selecting a 572 engine for a project, verify the intended horsepower with the supplier, and plan for compatible drivetrain and cooling upgrades. A dyno-based tune remains the most reliable method to confirm the engine’s actual horsepower and torque at the crank or wheels.
Summary: For Chevrolet Performance’s factory crate options, the 572 typically delivers 620 hp (ZZ572/620) or 720 hp (ZZ572/720R), with real-world output influenced by configuration and tuning. Custom builds can push well beyond these figures, while purely showroom or street-oriented setups may stay closer to the lower end of the spectrum.
What is the difference between a 572 and 632?
The ZZ632's iron block shares a mold with Chevrolet Performance's ZZ572 crate engines, but the castings are machined to accommodate the massive 632-cubic-inch displacement. The bore grows by 0.040 inch compared to the 572-cubic-inch V-8s, with most of the displacement gain coming from a stroke that's 0.375 inch longer.
What makes a 572 big-block engine special?
It features a big-bore 4.5" block and a 4.5" stroke, along with massive aluminum cylinder heads designed to flow huge amounts of air. Rated around 655 horsepower and 710 lb-ft of torque, the Boss 572 is a naturally aspirated powerhouse. It uses a solid roller camshaft, forged internals, and a 10.0:1 compression ratio.
How much HP does a 632 big-block have?
A 632 big block engine can produce from approximately 840 horsepower for a streetable pump gas version to over 1,300 horsepower in a dedicated drag race setup, with a popular naturally aspirated race version from Chevrolet making 1,004 horsepower. The horsepower output varies significantly depending on the specific build, intended use (street vs. race), and the use of forced induction like superchargers or nitrous oxide.
You can watch this video to see a Chevrolet 632 crate engine being fired up: 50sEngine BuilderYouTube · May 2, 2025
- Chevrolet ZZ632/1000: Produces 1,004 horsepower and is Chevrolet's largest and most potent engine to date.
- Smeding Performance BMF: An 840 horsepower, naturally aspirated, street-friendly version that runs on pump gas.
- BluePrint Engines Pro Series: Available in a carbureted version making 1,015 horsepower or a fuel-injected version at 1,000 horsepower.
- Dedicated Drag Race Engines: Custom builds can reach higher horsepower numbers. For example, one engine produces 1,300 horsepower, while another with a two-stage nitrous setup can make close to 2,000 horsepower.
This video shows the power of a 632 cubic inch big block engine on a dyno: 59sThe Horsepower MonsterYouTube · Oct 18, 2025
How much horsepower does a Chevy 572 make?
between 620 to 750 horsepower
The horsepower output of a 572 Big Block crate motor can vary depending on the specific configuration and modifications made to the engine by the manufacturer offering it. However, generally speaking, a 572 Big Block crate engine can produce between 620 to 750 horsepower and 645 to 710 lb-ft of torque.
