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Product Summary

350, Long Block Crate Engine Type, 406 ft./lbs. Torque

  • 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 lineup
  • Uses aluminum Fast Burn cylinder heads equipped with LS-style beehive valve springs for greater high-rpm performance
  • Rated at 405 horsepower and 406 lb.-ft of torque - more than any Small-block engine ever offered in a production Chevrolet muscle car or Corvette!
  • Built with a cast-iron block with four-bolt mains, along with a forged steel crankshaft, an aggressive hydraulic roller camshaft, and durable, high-silicon pistons
  • Base crate engine package includes the intake manifold, distributor, water pump, balancer, and flexplate installed

Key Specs

MFG. Part #19419205
BrandChevrolet Performance Parts
Crate Engine TypeLong Block
Engine Displacement350 cu. in.

Need To Know

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Details

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. 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 Small-Block engine ever offered in a production Chevrolet muscle car or Corvette!

The ZZ6 is built with a cast-iron block with four-bolt mains, along with a forged steel crankshaft, an aggressive hydraulic roller camshaft and durable, high-silicon pistons. Motorsports-inspired valve covers distinguish this new crate engine at a glance, too – along with Chevy “Bowtie” insignias in the ends of the cylinder heads that let everyone know you’ve got the latest Chevrolet Performance hardware under the hood.

This base crate engine package includes the intake manifold, distributor, water pump, balancer, and flexplate installed. Air cleaner assembly, ignition wires, and accessory drive not included.

  • Engine Type: Chevy Small-Block V-8
  • Displacement (cu in): 350
  • Bore x Stroke (in.): 4.000 x 3.48
  • Block: Cast-iron with 4-bolt mains
  • Crankshaft: Forged steel
  • Connecting Rods: Forged powder metal
  • Pistons: Hypereutectic aluminum
  • Camshaft: Steel hydraulic roller
  • Valve Lift (in): .474 intake/.510 exhaust
  • Camshaft Duration (@.050 in): 208° intake / 221° exhaust
  • Cylinder Heads: Fast Burn aluminum; 62cc chambers
  • Valve Size (inches): 2.000 intake / 1.550 exhaust
  • Compression Ratio: 9.72:1 nominal
  • Rocker Arms: Aluminum roller style
  • Rocker Arm Ratio: 1.5:1
  • Recommended Fuel: Premium pump
  • Distributor: HEI
  • Ignition timing: 36° Total @ 4,000 rpm
  • Maximum Recommended RPM: 5,800 rpm
  • Flexplate: 12.750"
  • Balanced: External

Warranties

CARB Warning

Follow EPA, CARB, and state regulations for engine changes

Emissions warning: this part is for vehicle engine changes, not direct oem engine replacements. In California, engine changes are legal when done in compliance with California bureau of automotive repairs (bar) engine change policy. For assistance, call bar referee at: (800) 622-7733. And see https://bar.Ca.Gov/consumer/smog_check_program/engine_changes. All customers must comply with federal epa mobile source enforcement memorandum no. 1a (and addendum) and all applicable state regulations when conducting engine changes. Improper installation and/or use of this part in California may subject the installer and/or owner to a $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and laws of all states for use of this engine change part on makes or models of vehicles that render them noncompliant with applicable state and/or federal emission laws with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine

Specifications

KEY SPECS
MFG. Part #19419205
BrandChevrolet Performance Parts
Crate Engine TypeLong Block
Engine Displacement350 cu. in.
GENERAL
Horsepower405 horsepower
Compression Ratio9.72:1
Torque406 ft./lbs.
Maximum RPM5,800
Camshaft TypeHydraulic Roller Tappet
Cylinder Head MaterialAluminum
Piston MaterialHypereutectic Aluminum
Crankshaft MaterialForged Steel
Combustion Chamber Volume62cc
Camshaft Duration (.050 in)208° intake / 221° exhaust
Camshaft Lift (in).474 intake / .510 exhaust
Bore x Stroke (in)4.000" x 3.480"
Carburetor IncludedNo
Intake Manifold IncludedYes
Distributor IncludedYes
Connecting Rod MaterialPowdered Metal
Valve Covers IncludedYes
AssembledYes
Engine BalanceExternal
Cylinder Heads IncludedYes
Rear Main Seal Style1-piece
Throttle Body IncludedNo
Oil Pan IncludedYes
Timing Cover IncludedYes
Water Pump IncludedYes
Harmonic Balancer IncludedYes
Flexplate IncludedYes
Flywheel IncludedNo
Air Cleaner IncludedNo
Spark Plugs IncludedYes
Spark Plug Wires IncludedNo
Computer IncludedNo
Wiring Harness IncludedNo
Cylinder Head StyleAssembled
Intake Valve Diameter2.000"
Exhaust Valve Diameter1.550"
Rocker ArmsAluminum roller
Rocker Arm Ratio1.5:1
Recommended FuelPremium
BlockCast Iron, 4 bolt main
Sold in QuantityEach