The ultimate ‘ZZ’ crate engine
Chevrolet Performance’s ZZ6 is one of the most powerful 350-based crate engines in the more than 25-year history of the ‘ZZ’ crate engine lineup.
PART NO. 19433042
405 HP @5600 RPM
406 LB-FT @4600 RPM
Innovation in motion
It uses aluminum Fast Burn cylinder heads equipped with LS-style beehive valve springs for greater high-rpm performance. It’s rated at 405 horsepower and 406 lb.-ft. of torque – more than any GEN-I Small-Block engine ever offered in a production Chevrolet muscle car or Corvette!
Connect & Cruise Powertrain System
Connect & Cruise Crate Powertrain Systems provide factory-matched engine-and-transmission combinations that include specially calibrated controllers and wire harnesses designed for retrofit installations in older vehicles.
†Parts and labor warranty when installed by a GM Dealer or qualified installing independent Service Center (ISC) or when sold over the counter and REPAIRED by a GM Dealer or qualifying ISC. Parts only when consumer repaired or installed in non-highway application. Coverage limited to defects in material and/or workmanship of the specific part only. Warranty valid when all required components are installed on the same vehicle and purchased on one invoice.
††Must be purchased from a participating U.S. dealer or Chevrolet Performance Authorized Reseller. Mail-in rebate offer not available with other offers. See gmpartsrebates.com for details, applicable rebate amounts, and rebate form. Rebates must be submitted by 1/31/25. Rebates may be submitted over two invoices within 120 days of each other. Allow 6 to 8 weeks for delivery of debit card. Offer valid 1/1/24 to 12/31/24.
Unless specifically noted to the contrary herein, vehicles equipped with Chevrolet Performance parts that are emissions-related may not meet U.S., Canadian, and state and provincial laws and regulations relating to motor-vehicle emissions. These parts are designed and intended for use in vehicles operated exclusively for competition: in racing or organized competition on courses separate from public streets or highways. Visit www.chevroletperformance.com/emissions for more details. Rebate form and details available at chevrolet.com/performance/offers.
Installation Guides
Find everything from vital data about your engine’s capabilities to how to install it into your build.
ZZ6 Tech Specs
- Part Number: 19433042
- Engine Type: Chevy Small-Block V-8
- Displacement (cu. in.): 350
- Bore x Stroke (in.): 4.000 x 3.48
- Block (P/N 10105123): Cast iron with 4-bolt mains
- Crankshaft (P/N 12556307): Forged steel, shot peened
- Connecting Rods (P/N 10108688): Forged powdered metal
- Pistons (P/N 10159436): Hypereutectic aluminum
- Camshaft Type (P/N 10185071): Steel hydraulic roller
- Camshaft Lift (in.): .474 intakes/.510 exhaust
- Camshaft Duration (@0.050 in.): 208° intake / 221° exhaust
- Cylinder Heads (P/N 19300955): Fast burn aluminum – 62-cc chambers
- Valve Size (in.): 2.000 intake / 1.550 exhaust
- Compression Ratio: 9.7:1 nominal
- Rocker Arms (P/N 19210724): Aluminum roller style
- Rocker Arm Ratio: 1.5:1
- Recommended Fuel: Premium pump
- Ignition Timing: 36° total @ 4000 rpm
- Maximum Recommended rpm: 5800
- Balanced: External
Mobil 1 is now The Official Motor Oil of Chevrolet Performance.