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MSRP

$28,625

Part No.

19166392

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For Off-Road &

For Off-Road &
STREET

6 Select
Available Mods

Power

Power
430
hp @ 5800 rpm

A limited-edition crate engine that honors the legendary ZL1

At the height of the muscle car wars, a few enterprising, dealer-backed racers worked the loopholes of Chevrolet’s COPO ordering system to create a handful of factory-built supercars that weren’t found in any brochure or order guide. They were equipped with an all-aluminum 427 engine dubbed the ZL1. It was similar in specification to the legendary L88 427, but with an aluminum block that saved about 100 pounds.

Chevrolet Performance commemorates the ZL1 with the Anniversary Edition 427 — an aluminum-block crate engine that mimics the original in spirit, but with design upgrades that make it a street-friendly option for resto-mod and tribute projects. Our modern aluminum cylinder block features strength-enhancing design tweaks, screw-in galley plugs, and more. We also use a hydraulic roller camshaft in place of the ZL1’s original-type flat-tappet cam, making for smoother street operation and greatly reduced maintenance.

Only 427 examples of this unique engine were built, with each numbered crate engine including a special owner’s kit with an authenticity certificate, special 427 emblems, and more.

ANNIVERSARY EDITION 427 DYNO

Click on the slider to see the torque and power ratings change with rpm.*

*Approximate values shown.

ANNIVERSARY EDITION 427 TECH SPECS

Part Number:
19166392
 
 
Engine Type:
Aluminum Chevy Big-Block V-8
Displacement (cu. in.):
427
Bore x Stroke (in.):
4.250 x 3.750
Block (P/N 88958696):
Cast-aluminum with four-bolt main caps
Crankshaft (P/N 19171620):
Forged steel
Connecting Rods (P/N 19211226):
Forged steel
Pistons (P/N 19171618):
Forged aluminum
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 19211799):
Aluminum oval port, 110-cc chambers
Balanced:
Internal
Valve Size (in.):
2.190 intake / 1.880 exhaust
Compression Ratio:
10.1:1
Rocker Arms (P/N 12361323):
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
Flexplate (P/N 12561217):
14-inch
Recommended Fuel:
92 octane
Ignition Timing:
Base 10° BTDC, 36° Total
Maximum Recommended rpm:
6400

OWNER RESOURCES

Already own one, but lost some of the paperwork? We’ve got you covered with downloads and links for some of the more important documents below. You’ll find everything from the vital data about your engine’s capabilities to how to install it into your build, even all of the warranty information should you need to make a claim. And don’t forget, the best way we can make sure to get you the latest information on your specific part is to tell us which one you have by registering your engine. No matter what stage of your build you’re in — from shopping for the right part to that part having turned in a few miles — we have the information you need.

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  • INSTALLATION NOTES

    • Due to crate fitment, the carburetor is shipped in a separate box and needs to be installed by an engine installer
    • Requires addition of starter and fuel pump (not included)
    • 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-inch automatic transmission flexplate; use flywheel P/N 12582964 and 11.500-inch clutch assembly for manual transmission applications
    • Designed for pre-1976 street vehicles or any off-road vehicle
    • Not intended for marine applications
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FINISH OFF YOUR CRATE ENGINE WITH THESE SELECT PARTS

Download a catalog for a full listing of components and related parts.

SuperMatic 4L85-E Four-Speed
Transmission • P/N 19154550

Transmission Controller • P/N 19212657

Serpentine Accessory Drive Belt System With Air Conditioning • P/N 19172805

Fuel Pump, Street-Performance (Chevy Big-Block)
• P/N 12355614

Chrome Water Neck • P/N 12342024

Chrome High-Torque Mini-Starter • P/N 12363128

  • 1 Performance MSRP The Manufacturer's Suggested Retail Price excludes tax, shipping and installation.