ZZ427/480 Connect & Cruise Powertrain System with T56 Manual Transmission


  • ZZ427/480(427 cu. in.)480 HP Engine
  • T56 Super Magnum Six-speed Manual Trans.
  • Calibrated Engine Control Module
  • The Legendary L88 w/ Modern Upgrades
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SKU: CPSZZ4274806LMAN Categories: , Tag:

ZZ427/480 Connect & Cruise with T56 Transmission

Engine Specs:

  • ZZ427/480 (427 cu. in.)
  • 480 hp @ 6,000 rpm
  • 490 lb.-ft. @ 3,800 rpm
  • 10.0:1 compression ratio
  • 110 cc aluminum oval port heads (2.190 intake / 1.880 exhaust valves)
  • 1.7 ratio roller rocker arms
  • .527 intake / .544 exhaust camshaft lift

Transmission Specs:

  • T56 Super Magnum six-speed manual
  • 26-spline input shaft, 31-spline output shaft
  • Slip-yoke design, 40-tooth reluctor ring for use with Chevrolet Performance controllers (where applicable)
  • New synchronizers featuring fine tooth angles
  • Bolstered one-piece countershaft to resist distortion
  • Re-designed shift forks
  • Gear ratios: 1st-2.66, 2nd-1.78, 3rd-1.30, 4th-1.00, 5th-0.80, 6th-0.63)
  • 33.6 inches long (approx)

More about Connect & Cruise Crate Powertrain Systems

The Complete Performance Package!

When it comes to factory-engineered performance and convenience, nothing beats Chevrolet Performance’s industry-exclusive Connect & Cruise powertain systems. With one package you get the engine and automatic or manual transmission and, we deliver it for less than the cost of buying the components separately.

Our engineers matched the engines and transmissions for optimal performance and durability, so you can wring out every horsepower with total confidence!

We did the work to design and calibrate perfectly matched powertrain systems and covered them with a 24-month / 50,000-mile limited warranty.

Chevrolet Performance pioneered the performance crate engine, so when it comes to performance innovations that save time, money and guesswork, we once again lead the way! All you have to do is install, connect, and start cruising!

NOTE: All components, engine, transmission, controllers and installation kits (where applicable) are ordered and delivered separately.

Additionally, all engines require a front-end accessory drive system. The instructions included with each kit lists recommendations and Chevrolet Performance offers several configurations to suit different applications that also allows the installer to easily delete air conditioning.


ZZ427/480 Connect & Cruise with T56 Transmission

CPSZZ4274806LMAN System Components:

  • 19331572 Engine
  • 19352208 Transmission
  • 19329902 Transmission Installation Kit

A Modern Version of the L88 with Six-Speed Fun!

The L88 427 was the ultimate expression of Chevy’s Big-Block power back in the day, combining a rigid iron cylinder block with lightweight aluminum cylinder heads and a single four-barrel carburetor. Our engineers have recreated that raspy rat engine feel with the ZZ427/480, and they did it with updated components that enhance drivability ? and performance! The ZZ427 features the latest-generation block casting with four-bolt main caps, an all-forged rotating assembly, and a hydraulic roller camshaft for greater drivability and a broader performance range. It also features aluminum oval-port cylinder heads with 2.19/1.88-inch valves and a pump-gas-friendly 10.0:1 compression ratio. It all adds up to 480 hp at 5,800 rpm and 490 lb.-ft. at 3,800 rpm! It’s all backed by the T56 Super Magnum six-speed manual transmission for thrill of selecting your own gears and a double overdrive to make highway cruising a pleasure. These transmissions are rated to 700 lb.-ft. of torque and are brand new from the ground up. They use an extensively modified transmission case to prevent leaks under high-stress conditions and increase overall power-handling capabilities with stronger, high-capacity gear sets, input shaft and output shaft from the Tremec TR6060. Kit includes shifter handle and Chevrolet Performance-logo ball-type shift knob to complete your install.

Dyno Chart

ZZ427/480 Connect & Cruise with T56 Transmission

Click here to download installation information.

ZZ427/480 Connect & Cruise with T56 Transmission

Chevrolet Performance Connect & Cruise Powertrain Systems include a 24-month or 50,000-mile (80,000 kilometer) limited warranty on all components.

Click here for more detailed warranty information.

Prop65WARNING: These auto parts can expose you to chemicals including phthalates and lead. Installing or using these parts can expose you to other parts containing these chemicals and to engine exhaust, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to