Chevrolet Performance ZZ427/480 Crate Engine


  • 480 hp @ 6,000 rpm/490 lb.-ft. @ 3,800 rpm
  • Includes carb., intake, distributor, wires, water pump, balancer
  • All-forged rotating assembly and hydraulic roller cam.
  • Aluminum, oval-port 110cc chamber cylinder heads

Have your engine dyno tested by one of our professional engine builders to ensure everything is properly broken in. We can dyno your engine with your components to make sure everything is working harmoniously before shipping you the whole assembly drained and ready to install.

Shipping is free, but there is a delivery fee for residential addresses.

SKU: 19331572 Categories: , Tag:

ZZ427/480 Crate Engine

The L88 427 was the ultimate expression of Chevy‘s production Big Block power, combining a rigid iron cylinder block with lightweight aluminum cylinder heads and a single four-barrel carburetor. GM engineers have recreated that classic, raspy rat engine in the Chevrolet Performance ZZ427/480 crate engine, but with updated components that enhance drivability and performance.

This Chevy engine is a modern take on the classic L88. The engine assembly features the latest-generation block casting with four-bolt main caps, an all-forged rotating assembly for exceptional strength and durability and a hydraulic roller camshaft instead of the original L88’s flat-tappet cam, for greater drivability and a broader performance range. It also features aluminum oval-port cylinder heads with 2.19/1.88-inch valves and a pump-gas-friendly 10.0:1 compression ratio.

Whether you’re building a ’69 COPO Camaro resto-mod tribute, a modified mid-year Corvette or a street-tire class winner, the ZZ427/480 is the heritage-inspired crate motor that delivers the performance that gave the Chevy Big Block its legendary reputation.

Important Notes:

  • Requires addition of starter and fuel pump (not included).
  • Recommended Transmission: SuperMatic 4L85-E Four-Speed Automatic P/N 19300175
  • Due to crate fitment, the carburetor is shipped in a separate box and needs to be installed by an engine installer.
  • Clutch linkage bosses are drilled and tapped. When using cast-iron exhaust manifolds, lower head bolts may need to be replaced with bolts with shorter heads for clearance.
  • Comes with an internally balanced 14″ automatic transmission flexplate. Requires flywheel designed for internally balanced engines.
  • Designed for pre-1976 street vehicles or any off road vehicle.
  • Not intended for marine applications.

Note: Distributor with melonized steel gear MUST be used with long-blocks and partial engines with steel camshafts, or engine damage will occur.

This part supersedes old GM P/N 19166393

Supersedes old GM P/N 19166393

Weight 520 lbs

Technical Specs:

  • Engine Type: Chevy Big-Block V-8
  • P/N: 19331572
  • Displacement (cu in): 427
  • Bore x Stroke (in): 4.250 x 3.750
  • Block (P/N 19170538): Cast-iron with 4-bolt main caps
  • Crankshaft (P/N 19171620): Forged steel
  • Connecting Rods (P/N 19211226): Forged steel
  • Pistons (P/N 19171618): Forged aluminum
  • 480 hp @ 6,000 rpm / 490 lb.-ft. @ 3,800 rpm
  • Intake Manifold (P/N 12363406): Dual plane
  • Camshaft Type (P/N 12366543): Hydraulic roller
  • Valve Lift (in): .527 intake / .544 exhaust
  • Camshaft Duration (@.050 in): 224° intake / 234° exhaust
  • Cylinder Heads (P/N 19331423): Aluminum oval port, 110cc chambers
  • Valve Size (in): 2.190 intake / 1.880 exhaust
  • Compression Ratio: 10.1:1
  • Rocker Arms (P/N 19210726): Aluminum roller style
  • Rocker Arm Ratio: 1.7:1
  • Distributor (P/N 88961867): HEI type
  • Carburetor (P/N 19170093): 770-cfm
  • Water Pump (P/N 19168602): Aluminum short-style
  • Spark Plugs and Wires: Included
  • Flexplate (P/N 12561217): 14″
  • Recommended Fuel: Premium pump
  • Ignition Timing: 36° Total @ 4,000 rpm
  • Maximum Recommended rpm: 6,400
  • Balanced: Internal


Click here to download installation information.

Chevrolet Performance Crate Engines include a 24-month or 50,000-mile (80,000 kilometer) limited warranty.

Click here for more detailed warranty information.


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