GM hasn’t forgotten the traditional small-block enthusiast. Chevrolet Performance just announced the release of an all-new ZZ5 350 crate engine. Rated at 400 horsepower, the new version will feature Fast Burn cylinder heads and beehive-type valvetrain support. The new head design with the beehive valvetrain is also included on an updated version of the ZZ383 “stroker” crate engine, which boosts power from 425 horsepower to 450 horses. It is also added to the CT400 circle track sealed racing engine.

“The ZZ5 350 builds on the legacy of the original, best-selling ZZ4 crate engine, proving our engineers are still finding new ways to make the classic Chevrolet small-block perform even better,” says Jim Campbell, GM U.S. vice president of Performance Vehicles and Motorsports.

The following information is culled from a GM news release that was issued before the official unveiling at the SEMA Show. EngineLabs will be there to take additional photos and get more information from the engineers.

The ZZ5 350 is available in an economical base form (part number 19301293), including an intake manifold, distributor, water pump, damper and flexplate, as well as a Turn Key package (part number 19301294), which adds a Holley four-barrel carburetor, starter, fuel pump, air conditioning pump, alternator, front-end accessory drive kit and more.

The new ZZ383 (part number 19301295) comes with a cast iron water pump and balancer, but the ignition system and other accessories must be purchased separately. The CT400 factory-sealed engine (part number 19318604) includes a racing-only eight-quart circle track oil pan featuring a dual kick-out design, along with a valve cover breather kit and a special “kool nut’ rocker arm design.

Every Chevrolet Performance small-block crate engine is assembled with all-new parts, including a strong iron cylinder block, with four-bolt mains.

Again, more information to follow!