Chevrolet Performance SP383 EFI 450HP Deluxe Crate Engine with T56 6 Speed CPSSP383EFIDT56

New Connect and Cruise Package

Chevrolet Performance is breaking new ground with the launch of the new Connect-and-Cruise crate powertrain systems. They're factory-engineered engine-and-transmission combinations that include all the electronic control modules, wiring harnesses and other key components you need with the simplicity of one part number. Our engineers matched the engines and transmissions for optimal performance and durability, so you can wring out all the horsepower from them with total confidence. The specially calibrated controllers are designed for retrofit installation in older vehicles, for easier and quicker installation and operation, without the need for third-party tuning. Each one comes with an installation kit, including flex plates, covers and other important components to keep typical mid-project parts chasing to a minimum.

Engine and Trans Includes:

•SP383 EFI Deluxe Crate Engine
•GM T56 Transmission with shift lever & knob
•GM Bellhousing, flywheel & clutch installation package

It’s hard to beat the classic 383 “stroker” for Small-Block torque, but Chevrolet Performance engineers found away. They matched it with the driving convenience of electronic fuel injection!
Rated at 450 horsepower and 436 lb.-ft. of torque, the SP383 EFI also features a high-performance roller camshaft and lightweight aluminum, Fast Burn-style cylinder heads with modern valvetrain technology that includes beehive-type valve springs and aluminum roller rocker arms. 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 a vintage look that offers contemporary drivability and strong performance.
Our SP383 EFI Deluxe kit includes the distributor, damper and flexplate, ready to install.

Specifications:
Power: 450 HP @ 5800 RPM, 436 ft. lbs. of torque @ 4800 RPM
Displacement: 383 CID
Bore x Stroke: 4.00” x 3.80”
Compression Ratio: 9.6:1
Recommended Fuel: 92 Octane
Block: Cast Iron, 1 piece rear seal, 4-bolt main caps
Crankshaft: 4340 Forged Steel
Connecting Rods: HD Powdered Metal Steel
Pistons: Hypereutectic Aluminum
Camshaft: Steel Hydraulic Roller Tappet
Cam Lift: .509” Intake / .528” exhaust
Cam Duration @ .050”: 222 deg. Intake / 230 deg. Exhaust
Lobe Separation: 112 Degree
Cylinder Heads: GM Fast Burn Aluminum Dual Bolt Pattern, 3/8” screw-in rocker studs
Combustion Chamber: 62cc
Valves: .200” Intake/ 1.55” Exhaust
Rocker Arms: Aluminum Roller, 1.5:1 Ratio
Valve Springs: 12625033
Balance: External
Maximum GM Recommended RPM: 6000
Ignition Timing: Base 10 degrees BTDC, 36 degrees total

Engine Includes:
• Fully GM assembled long block
• Black Aluminum Valve covers
• Pro-Flo Vortec Intake Manifold
• Oil pump, pick-up and oil pan
• 12-3/4” Auto Trans Flexplate
• 8” Harmonic Balancer
• Front timing cover
• Oil Filter and Adapter
• Passenger Side RH Oil Dipstick and Tube

Note: Plug wires are not included

Warranty:
General Motors limited 2 year / 50,000 mile parts & labor warranty. Click on Document tab above for full details.

The smoothest shifting, strongest, and most versatile 6-speed aftermarket transmission.

These Chevrolet Performance Tremec T-56 manual transmissions are truly brand new from the ground up. They can withstand up to 700 ft.-lbs. of torque, with gears featuring substantially increased face widths and 2-piece laser-beam welded construction, allowing for greater control of the tooth angles, pitch, and alignment.

Features:

Exterior case similar to forth-generation F-body with stronger, high-capacity gear sets, input shaft and output shaft used in the Tremec TR6060
26-spline input shaft
31-spline output shaft
Slip-yoke design
40-tooth reluctor ring that's necessary for use with electronic vehicle speed sensors used with Chevrolet Performance controllers
Kit includes shifter handle and Chevrolet Performance-logo ball-type shift knob
New synchronizers featuring fine tooth angles
Bolstered one-piece countershaft to resist distortion
Re-designed shift forks
An extensively modified transmission case to prevent leaks under high-stress conditions and increase overall power-handling capabilities
Street - (1st-2.66, 2nd-1.78, 3rd-1.30, 4th-1.00, 5th-0.80, 6th-0.63)