Chevrolet Performance SP383 435HP Crate Engine with T56 6 Speed CPSSP383T56

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 Crate Engine
•GM 4L70E Transmission
•GM Torque Converter
•GM Transmission Control package

The all new SP383 offers Big Block performance with a Small Block price tag.

Chevrolet Performance Parts starts with the legendary Fast Burn cylinder heads and the 383cid bottom end, to offer an incredible 445 ft. lbs. of torque @ 4600 rpm with a smooth, linear delivery. The combination of a 3.800 steel crank and a stout .509/.528 lift hydraulic roller camshaft produces 435hp @ 5600 rpm, making the SP383 the benchmark by which all other 383cid small blocks will be measured.

GM's testing was completed using a GM single-plane intake manifold, a 750cfm Demon mechanical secondary carb, and 1-3/4 primary x 33 length headers with a 4 collector. A dual-plane intake manifold can be used, but will affect overall peak performance numbers by 15-20 HP.

Specifications:
Power: 435 HP @ 5600 RPM, 445 ft. lbs. of torque @ 4600 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, 32 degrees total

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

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 similer 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)