SP383 EFI Turn-Key Connect & Cruise Crate Powertrain System with T56 Manual Transmission


  • 450hp @ 5,800 rpm / 436 lb.-ft. @ 4,800 rpm
  • Forged Steel Crank in a Four-bolt Main Block
  • Lightweight Fast Burn Aluminum Heads
  • T56 Super Magnum Six-Speed Manual Transmission
REBATE AVAILABLE: $500/$750/$1,000 Prepaid VISA Gift Card From Chevrolet Performance. See 'Rebate' tab below for details.

Have your engine dyno tested by one of our professional engine builders to ensure everything is properly broken in. We can dyno your engine with your components to make sure everything is working harmoniously before shipping you the whole assembly drained and ready to install.

Shipping is free, but there is a delivery fee for residential addresses.

SKU: CPSSP383EFITKT56 Categories: , Tag:

SP383 EFI Turn Key Connect & Cruise with T56 Manual Transmission

Engine Specs:

  • Engine: SP383 EFI Turn-Key (383 cu in)
  • 450 hp @ 5,800 rpm
  • 436 lb.-ft. @ 4,800 rpm
  • 9.72:1 compression ratio

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
  • 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)

Installation Notes:

  • Designed for pre-1976 street vehicles or any off-highway vehicle
  • Not intended for marine applications

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! The specially calibrated controllers for fuel-injected engines are designed for retrofit installations in older vehicles, for easier and quicker installation – and more importantly – operation without the need for third-party tuning.

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.


SP383 EFI Turn-Key Connect & Cruise with T56 Manual Transmission

CPSSP383EFITKT56 System Components:

  • 19419199 Engine
  • 19352208 Transmission
  • 19329900 Transmission Installation Kit

Big Torque and EFI Convenience in a Compehensive Kit

Chevrolet Performance’s SP383 EFI Turn Key-kit offers the strong pull of the proven 383 “stroker” combination and the contemporary convenience of electronic fuel injection, delivered with most of the engine accessories required to get the engine running in your project vehicle!

The SP383 EFI incorporates a port-style injection system, with the injectors plumbed in a carburetor-style intake manifold, and the throttle body mounted in the conventional position of the carburetor, which allows for a traditional air cleaner and a classic appearance. It’s rated at 450 horsepower and a stout 436 lb.-ft. of torque.

Our comprehensive Turn-Key assembly is delivered with the distributor and damper installed. The throttle body, starter, air conditioning pump, alternator, single-belt front-end accessory drive system and more are also included in the kit.

SP383 EFI Turn Key Connect & Cruise with T56 Manual Transmission

Click here to download installation information.

SP383 EFI Turn Key Connect & Cruise with T56 Manual 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.

This product qualifies for a $500/$750/$1,000 Rebate from Chevrolet Performance.

To receive the rebate:

  1. Purchase a select Chevrolet Performance Connect & Cruise System between 1/1/2024 and 12/31/2024
  2. Complete all information requested on this form and mail it by January 31st, 2025, OR
  3. Submit your rebate online at before the same deadline

See rebate form for more details.

NOTE: Please allow up to 6-8 weeks for rebate processing.


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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