- Engines & Components
- Engine - Assembled / Ready-to-Run
- Chevrolet Performance ZZ572/620 Deluxe 621HP Connect & Cruise Automatic Transmission Powertrain System
Chevrolet's Baddest Big-Block Street Engine!
When it comes to performance innovations that save time, money and guesswork, Chevrolet Performance once again leads the way!
Chevrolet Performance pioneered the concept of crate engines more than four decades ago, and continues to lead the industry with their unprecedented Connect & Cruise crate powertrain systems - factory-engineered engine and transmission combinations that include all the electronic control modules, wiring harnesses and other key components.
Chevrolet Performance engineers matched the engines and transmissions for optimal performance and durability, so you can wring out every horsepower from them with total confidence! The specially calibrated controllers are designed for retrofit installations in older vehicles, for easier and quicker installation and operation without the need for third-party tuning.
Show More
The convenience of a crate engine, the assurance of factory validate performance and the value of an inclusive package - that's what you get with Chevrolet Performance's Connect & Cruise crate powertrain systems.
Each kit delivers a brand-new, fully assembled crate engine, a brand-new or remanufactured electronically controlled overdrive transmission, and the electronic transmission control module to get it all running in your project vehicle.
Chevrolet Performance engineers matched the engines with their respective transmissions, ensuring they are up to the task of channeling big power with absolute dependability. The engine is traditional Big-Block Chevy design that was a staple for decades in rear wheel drive production-vehicles. The connect & cruise systems' unique SuperMatic transmission controllers is designed to work with the carbureted engine for a seamless, "plug-and-play" installation that is quick, easy and intuitive. Detailed instructions outline all the necessary steps.
The engineers did all the hard work of designing and calibrating perfectly matched powertrain systems - and they covered them with a 24-month/50,000-mile limited warranty.
ZZ572/620 Deluxe Engine
Proving the adage there's no replacement for displacement, the ZZ572/620 is the ultimate expression of Chevrolet Performance's engineering capability, wrapped up in a soul-stirring combination of performance and attitude. They build the ZZ572/620 with a huge 4.560-inch bores and a 4.375-inch stroke to help it deliver 621 horsepower and a stunning 645 lb.-ft. of grunt!
Strength comes from a latest-generation tall-deck block casting with four-bolt main caps and an all-forged rotating assembly, while high-flow aluminum rectangular-port cylinder heads with massive 310cc intake passages, 118cc raised exhaust ports and 118cc combustion chambers process tremendous airflow. A hydraulic roller camshaft with incredible 0.632/0.632-inch lift and 254/264-degree duration specifications optimizes the airflow volume enabled by the large-port heads.
Chevrolet Performance delivers this Big-Block with an 850-cfm carburetor, HEI distributor, aluminum water pump and distinctive orange powder-coated valve covers that proudly proclaim the 572 legend.
Specifications:
- Horsepower: 621 @ 5400 RPM
- Torque: 645 ft/lbs @ 4200 RPM
- Block: Tall-Deck, Cast Iron w/4-Bolt Main Caps
- Crankshaft: Forged Steel
- Connecting Rods: Forged Steel
- Pistons: Forged Aluminum
- Camshaft: Hydraulic Roller
- Cylinder Heads: Rectangle Port Aluminum, 2.25" in/ 1.88" ex Valves
- Intake Manifold: Aluminum Single Plane
- Balanced: Internal
- Compression Ratio: 9.6:1
- Rocker Arms: 1.7:1
- Recommended Fuel: Premium Pump
SuperMatic 4L85-E Four-Speed Automatic Transmission
If you're looking to wring all the horsepower from your engine, look no further than Chevrolet Performance's heavy-duty SuperMatic 4L85-E Four-Speed Automatic Transmission. An extension of the TH400, widely considered one of the greatest transmissions ever manufactured, the 4L85-E continues the tradition of harnessing large outputs of power for optimal performance.
Advantages of the 4L85-E include an improved valve body, overdrive gear, and advanced electronic controls. The result is a transmission that delivers firm shifts, efficiency, and exceptional drivability with a maximum torque capacity of 685 lb-ft. GM-engineered, -tested, and -validated to deliver smooth shifts, it more than meets the demands of your high-performance engine.
Features:
- Based on the legendary TH400
- Improved valve body for firmer shifts
- Direct bolt-on for Gen I Small-Block and all Big-Block Chevys
- Gear ratios: 1st: 2.48, 2nd: 1.48, 3rd: 1.00, 4th: 0.75
- Handles up to 690 lbs/ft. torque
SuperMatic 4L85-E Installation Kit
Get your new 4L85-E bolted to your new engine with this 4L80 Series installation kit. Kit includes all the correct components that Chevrolet Performance offers to easily mate your new engine and trans.
Installation Kit Includes:
- SuperMatic Torque Converter; Dual Bolt Pattern 10-3/4" & 11-1/2"
- SuperMatic Connect-N-Cruise Pre-Programmed Controller
- Flexplate Covers
- Fasteners
- Instructions
Each Crate Powertrain System Includes:
- Fully assembled crate engine
- Transmission, Torque Converter & Install Kit
- SuperMatic transmission control module
- Instructions