HT383 Connect & Cruise Crate Powertrain System with 4L70-E Automatic Transmission


  • 323hp @ 4,200 rpm / 444 lb.-ft. @ 3,000 rpm
  • Forged Steel Crank in a Four-bolt Main Block
  • Vortec heads with dual-plane intake manifold
  • 4L70-E Four-Speed Automatic Transmission
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SKU: CPSHT3834L70E Categories: , Tag:

HT383 (323 hp) Connect & Cruise with 4L70-E Automatic Transmission

Engine Specs:

  • Engine: HT383 (383 cu in)
  • 323 hp @ 4,200 rpm
  • 444 lb.-ft. @ 3,000 rpm
  • 9.1:1 compression ratio

Transmission Specs:

  • 4L70-E four-speed automatic
  • Five-pinion gearsets
  • 3.06 first gear ratio, 0.70 overdrive ratio
  • Two-wheel drive

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.


HT383 (323 hp) Connect & Cruise with 4L70-E Automatic Transmission

CPSHT3834L70E System Components:

  • 19355670 Engine
  • 19368613 Transmission
  • 19299801 Torque Converter
  • 19332775 Transmission Control System
  • 19332781 Transmission Installation Kit

More stroke, more size, more cam, more power. More is better!

Got an older GM truck with a tired Small-Block? Forget the rebuild and take your truck’s capability to the next level with the Chevrolet Performance HT383 crate engine. The extra displacement and unique parts are designed to build a wide, flat torque curve that maintains at least 400 lb.-ft. between 2,500 and 4,000 rpm. That’s power you simply won’t get with a stock-type rebuild.

Built Chevy tough, this motor starts with a cast-iron block with four-bolt main caps, GM then fills the block with a forged steel crankshaft and a hydraulic roller camshaft. Top it off with iron Vortec heads for a 9.1:1 compression ratio that is perfect for regular gasoline at all altitudes and engine loads.

The 4L70-E four-speed automatic overdrive transmission backs the HT383 with strength and durability. Put this combo to work in your classic cruiser and enjoy a great balance of performance and efficiency!

Dyno Chart

HT383 (323 hp) Connect & Cruise with 4L70-E Automatic Transmission

Click here to download installation information.

HT383 (323 hp) Connect & Cruise with 4L70-E Automatic 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.


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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