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Home > Manufacturers > GM Performance Parts > Crate Engine > Big Block > ZZ
GM Performance Parts 19166393 ZZ Crate Engine 427 Cubic Inches, 430 Horsepower
Item Id:GMP-19166393
GM Performance Parts 19166393 ZZ Crate Engine 427 Cubic Inches, 430 Horsepower
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GM Performance Parts 19166393 ZZ Crate Engine 427 Cubic Inches, 430 Horsepower

A modern interpretation of the legendary L88 427

Between 1967 and 1969, the alphanumeric designation that struck fear from Main Street to the drag strip was L88. It was the ultimate expression of Chevy’s Big-Block power, combining a rigid iron cylinder block with lightweight aluminum cylinder heads and a single four-barrel carburetor.

GM Performance Parts has recreated that classic Big-Block combination in the ZZ427/480, rated at 480 horsepower. Like the original, it features an iron block, forged steel crankshaft and high-flow aluminum cylinder heads. We’ve upgraded the camshaft from the original’s mechanical flat-tappetdesign to a more contemporary hydraulic roller, giving this 21st-century L88 modern drivability characteristics and a greater rev range. A lower 10.1:1 compression ratio makes it pump gas-friendly, too. The original L88, born in the time of leaded gasoline, had 12.5:1 compression.

The ZZ427/480 comes complete with high-flow oval-port heads, a highliftcamshaft (0.510-inch intake/0.540-inch exhaust), an aluminum intake manifold, 870-cfm Holley carburetor, an HEI distributor, aluminum water pump, balancer, spark plug wires and a 14-inch flexplate.

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 isthe heritage-inspired crate engine that delivers the performance that built the Big-Block’s legendary reputation.

• 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" automatic transmission flexplate; use flywheel P/N 12582964 and 11.5" 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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This is a Normally Stocked Item
The Manufacturer Offers Drop Shipments For Special Order Items: No
Manufacturer's Drop Ship Fee For Special Order items If Desired: $ 0.00
GM Special Order items can typically be shipped within 7 days.

This item Ships by FreightLine (Common Carrier) due to weight and size. We offer a $150 Flat Rate shippingcharge to any destination within the 48 contiguous United States. Please call usto place an order for this item to take advantage of the shipping rate.

We have access to over $60 Million of inventory in 16 distribution centers nationwide to fill your orders from on a daily basis. Our site currently has over 350,000 items and more than twice that many yet to be added. Our product offering could be divided into several major categories. Parts for; drag racing, circle track racing, road racing, off road racing, street/strip, show vehicles, strictly street vehicles, trucks & SUVS, general repair and maintenance.
You may find that there are some product lines that you will not find on our site or that we refuse to sell. We are committed to selling only the best quality merchandise from the most respected manufacturers in the industry. If we are not willing to use a product ourselves, we will not sell it.
This is especially critical when it comes to racing internal engine components such as complete rotating assemblies, crankshafts and connecting rods. We have seen too many of our fellow racers be victims of this cheap offshore junk and we will not contribute to the problem. Please do not ask us to.