Fits On/Installation Notes:
The classic L88 427 updated for the 21st century!
Between 1967 and 1969, the legendary L88 was the ultimate expression
of Chevys Big-Block power, combining a rigid iron cylinder block with
lightweight aluminum cylinder heads and a single four-barrel carburetor.
That raspy rat engine was rated at 480 horsepower, although the figure
was generally thought to be on the conservative side.
GM Performance Parts has recreated that classic Big-Block combination
in the ZZ427/480 including the 480 horsepower rating (and it just might
be a little on the conservative side, too). Like the original, it features a
forged steel crankshaft and high-flow, oval-port aluminum cylinder heads.
Weve upgraded the camshaft from the originals mechanical flat-tappet
design to a smoother hydraulic roller, which delivers great drivability
characteristics and a broader rev range. A 10.1:1 compression ratio
means it will perform great on pump gas, too.
Whether youre 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 engine that delivers the performance that built
the Big-Blocks legendary reputation.
480 HP @ 5800 RPM
490 ft/lbs TQ @ 3800 RPM
