A modern take on the L88 

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.

PART NO. 19331572


480 HP @6000 RPM


490 LB-FT @3800 RPM

A classic recreated 

The ZZ427/480 features our latest-generation block casting with four-bolt main caps, an all-forged rotating assembly, and a hydraulic roller camshaft instead of the original L88’s flat-tappet cam, for greater drivability and a broader performance range.

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.  

Installation Guides

Find everything from vital data about your engine’s capabilities to how to install it into your build.

ZZ427-480 Tech Specs

  • Part Number: 19331572
  • Engine Type: Chevy Big-Block V-8
  • Displacement (cu. in.): 427 (7.0L)
  • Bore x Stroke (in.): 4.250 x 3.750
  • Block (P/N 19171620): Cast-iron with four-bolt main caps
  • Crankshaft (P/N 19170538): Forged steel
  • Connecting Rods (P/N 19211226): Forged steel 
  • Pistons (P/N 19171618): Forged aluminum
  • Camshaft Type (P/N 12366543): Hydraulic roller
  • Camshaft Lift (in.): .527 intake / .544 exhaust
  • Camshaft Duration (@.050 in.): 224° intake / 234° exhaust
  • Cylinder Heads (P/N 19211799): Aluminum oval port, 110-cc 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 19212081): HEI type
  • Carburetor (P/N 19170093): 770-cfm
  • Water Pump (P/N 19168602): Aluminum short-style
  • Spark Plugs and Wires: Included
  • Recommended Fuel: Premium pump
  • Ignition Timing: 36° Total @ 4,000 rpm
  • Maximum Recommended rpm: 6400
  • Balanced: Internal

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Unless specifically noted to the contrary herein, vehicles equipped with Chevrolet Performance Parts may not meet Federal Motor Vehicle Safety Standards and emissions regulations and should not be operated on public roads. Chevrolet Performance customers are responsible for ensuring their use of Chevrolet Performance complies with applicable federal, state, and local laws, regulations, and ordinances. Many parts intended for racing or other “off-highway” use are not designed or tested for crashworthiness or to meet the safety needs of the motoring public, and may adversely affect the original intended performance or handling characteristics of the vehicle. These parts are designed and intended to be used with experts supervising their installation and use, to help assure the proper and safe operation of the vehicle.