Chevy will celebrate 65 years of the Small Block engine in 2020, and to help kickstart the anniversary, the Bow Tie brand dropped a brand-new Chevrolet crate engine at the 2019 SEMA Show in Las Vegas. Dubbed the SP383 EFI, the new ‘eight is essentially a more modern version of the famous 383 Small Block “stroker,” and features all the convenience of a contemporary electronic fuel injection system.
Based on Chevrolet Performance’s ZZ6 EFI motor, the new SP383 Chevrolet crate engine bumps up the power and stroke. While the previous ZZ6 motor offered a 3.4-inch stroke, plus 420 horsepower and 405 pound-feet of torque, the SP383 gets a lengthened 3.8-inch stroke. Peak output for the SP383 is rated at 450 horsepower at 5,800 rpm and 436 pound-feet of torque at 4,800 rpm, with a recommended maximum rpm of 6,000 rpm.
Highlights for the new Chevrolet crate engine include fast burn-style cylinder heads and a modernized valvetrain with beehive-type valve springs. There’s also port-style injection, with the injectors plumbed through a carburetor-style intake manifold to give it that classic under-hood aesthetic.
Digging deeper, we find a cast iron block with four-bolt main caps, a forged steel crankshaft, heavy-duty forged steel connecting rods, hypereutectic aluminum pistons, and a steel hydraulic roller camshaft. Premium pump fuel is recommended.
The new Chevrolet Crate engine is offered in two separate kits, including a Deluxe kit which comes with a throttle body, distributor, damper and flexplate, as well as a Turn Key kit with an air cleaner, front-end accessory drive, PCV valve, and starter. Both kits come with a wiring harness and engine controller.
Like the rest of the Chevrolet crate engine lineup, the SP383 V8 is part of the Connect & Cruise Powertrain System, which allows buyers to match their engine of choice with just the right transmission and components.
The SP383 Chevrolet crate engine will be available to order from the 2020 Chevrolet Performance catalog.