Chevrolet is celebrating 65 years of the Small Block with a new fuel-injected SP383 V8 crate engine, a modern-day take on the classic 383 Small Block “stroker” motor.
The SP383 V8 is based on Chevrolet Performance’s existing ZZ6 EFI crate engine and features the same high-flow cylinder heads and modern-day valvetrain. With a longer 3.8-inch stroke, though, this engine is rated at 450 horsepower and 438 pound-feet of torque. For comparison’s sake, the ZZ6 motor has a 3.4-inch stroke and makes 420 horsepower and 405 pound-feet of torque.
Like the ZZ6 EFI, the SP383 V8 also has a port-style injection system, with the injectors plumped through a neat-looking carburetor-style intake manifold that helps retain the under-the-hood appearance of a classic vehicle. The engine is offered in Deluxe kit form, which includes the throttle body, distributor, damper and flexplate, and also as a Turn Key kit that adds an air cleaner, front-end accessory drive, breath, PCV valve and starter. Both the Deluxe kit and Turn Key kit include an engine controller and wiring harness as well.
“Chevrolet Performance’s newest crate engine builds on a pioneering legacy of engine innovation,” said Chevrolet Performance general director Kris Mayer. “It also expands our unmatched crate engine portfolio, offering customers opportunities to build the project vehicle of their dreams.”
Making the installation of the SP383 V8 engine easier, and all of Chevy’s available crate engines, is the Connect and Cruise program. Using a detailed chart in the Chevrolet Performance catalog, customers can view the matched components and their part numbers for their specific application and also view the ideal GM transmission to pair it with.
“Connect & Cruise systems eliminate the guesswork in selecting the right engine-and-transmission combination for your project,” said Mayer. “Once you’ve selected the engine, our factory-matched combinations match it with a Chevrolet-recommended transmission and identify the necessary controllers, harnesses and other supporting components you need to help get it all installed and running quicker—and with the confidence it’s the right combo for your classic vehicle.”
The SP383 V8 crate engine will be available to order from the 2020 Chevrolet Performance catalog.