When did the ZL1 big block engine come out?
When did the ZL1 big block engine come out?
In 1969, the ZL1 engine was born. A Fledgling Legend: The ZL1. In addition to the second design L88 cylinder head, 1969 was a big year for the “Rat” engine, as Chevrolet offered its first all-aluminum big-block for production cars.
What kind of camshaft does Chevy ZL1 have?
The ZL1 aluminum block is still available from Chevrolet Performance. The original engine came with a mechanical flat-tappet camshaft. However, the block has been updated to include provisions for installing a hydraulic-roller camshaft. It also will accept up to a 4.375-inch stroker crankshaft.
Is the ZL1 aluminum block still in use?
Four-bolt steel main caps are used with the three center caps featuring splayed bolts on the outer holes. Water and oil holes are capped with AN style O-ring plugs. The ZL1 aluminum block is still available from Chevrolet Performance. The original engine came with a mechanical flat-tappet camshaft.
What kind of engine does a 1969 Chevy ZL-1 have?
The 3946074 heads were used on the following applications: 1969 ZL-1 427/430HP All Aluminum engine, 1969 2nd design L-88 427/430HP engine, and the 1971 Corvette LS6 454/425HP engine. These heads were also sold over the GM parts counter for years. It is not uncommon to see a set of these 3946074 heads for sale.
In 1969, the ZL1 engine was born. A Fledgling Legend: The ZL1. In addition to the second design L88 cylinder head, 1969 was a big year for the “Rat” engine, as Chevrolet offered its first all-aluminum big-block for production cars.
The ZL1 aluminum block is still available from Chevrolet Performance. The original engine came with a mechanical flat-tappet camshaft. However, the block has been updated to include provisions for installing a hydraulic-roller camshaft. It also will accept up to a 4.375-inch stroker crankshaft.
Four-bolt steel main caps are used with the three center caps featuring splayed bolts on the outer holes. Water and oil holes are capped with AN style O-ring plugs. The ZL1 aluminum block is still available from Chevrolet Performance. The original engine came with a mechanical flat-tappet camshaft.
Is there a 427 ci Chevy ZL1 engine?
But a brief history lesson isn’t enough to satisfy the cravings for the “Holy Grail” of 427 ci engines. The ZL1 is still one of the most coveted engines for Chevrolet enthusiasts, but the chances of getting your hands on a factory ZL1 is slim.
