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Top > Performance Engines > ZL1 427 |
Call For Pricing and Availability
800-441-5150
The legend of the all-aluminum big-block continues.
Part Number 19166392
Limited production
ZL1 Heritage
24-month GMPP warranty
we have serial numbers 181, 182, 183, & 244
To celebrate the 50th anniversary of the Chevrolet big block, GM Performance Parts has brought back a modern version of the ZL1 for your chance to relive muscle car history.
The Anniversary Edition 427 starts with a retooled version of the ZL1 aluminum block using the exact same tooling that helped create this legend in 1969.
The advantage of the aluminum block is that it offers the completed engine the weight of a small block with a whole lot more power.
With a full list of features, this modern ZL1 is one of the most exclusive big block crate engines ever offered by GM Performance Parts.
Fittingly, only 427 will ever be produced, and then the ZL1 tooling will be retired forever.
The 427 lucky owners of this commemorative monster can expect an estimated 480 horsepower and 490 lb-ft of torque.
Anniversary Edition 427 Tech Specs:
Engine Type - Aluminum Chevy big-block V-8
Displacement - 427 cu in
Bore x Stroke - 4.25 x 3.76
Block - Cast aluminum with 4-bolt main caps
Crankshaft - Forged steel
Connecting Rods - Forged steel
Pistons - Forged Aluminum
Camshaft Type - Hydraulic roller
Valve Lift - .510 intake / .540 exhaust
Camshaft Duration (@.050 in) - 211° intake / 230° exhaust
Cylinder Heads - Aluminum oval port, 110cc chambers
Valve Size - 2.19 intake / 1.88 exhaust
Compression Ratio - 10.1:1
Rocker Arms - Aluminum roller style
Rocker Arm Ratio - 1.7:1
Distributor - HEI type
Carburetor - 870-cfm
Water Pump - Aluminum short style
Spark Plugs and Wires - included
Flexplate - 14"
Recommended Fuel - 92 octane
Ignition Timing - Base 8° BTDC, 36° Total
Maximum Recommended RPM - 6000
Balanced - Internal
INSTALLATION NOTES:
• Due to crate fitment, carburetor is shipped in a separate box and will
need to be installed by engine installer.
• Requires addition of starter and fuel pump (not included).
• Clutch linkage boss is cast into block, but must be 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 a 14" automatic transmission flexplate; use flywheel
P/N 14096987 and 11" clutch assembly for manual transmission.
• Designed for pre–1979 street vehicles or any off-road vehicle.
• Not intended for marine applications.
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