The next chapter of Small-Block performance. In 1955, Chevrolet debuted the very first Small-Block V-8. Since then, the innovative, power-dense engine has gone on to power generations of vehicles, dominate racetracks, and change the course of automotive history. Sixty years later, we’re proud to introduce the newest member of the Small-Block family, the ZZ6 Base crate engine. Delivering an impressive 405 horsepower and 406 lb-ft of torque at 4600 rpm, the ZZ6 Base is the latest expression of Chevrolet Performance’s engineering prowess. Featuring fast burn aluminum cylinder heads, single-plane intake, aluminum roller rocker arms, and 770-cfm carburetor, the ZZ6 Base builds on the last six decades of legendary performance and innovation, and advances the Small-Block legacy.
Part Number: 19351532
Engine Type: Chevy Small-Block
Displacement (cu in): 350
Bore x Stroke (in.): 4.000 x 3.48
Block: Cast-iron with 4-bolt Mains
Crankshaft: Forged steel (shot peened)
Connecting Rods: Forged powder metal
Pistons: Hypereutectic aluminum
Intake Manifold: Single-plane aluminum
Carburetor: 770 cfm Holley
Camshaft: Steel hydraulic roller
Valve Lift (in): .474 intake/.510 exhaust
Camshaft Duration (@.050 in): 208° intake/221° exhaust
Cylinder Heads: Fast Burn aluminum; 62cc chambers
Valve Size (inches): 2.000 intake / 1.550 exhaust
Compression Ratio: 9.72:1 nominal
Rocker Arms: Aluminum roller style
Rocker Arm Ratio: 1.5:1
Recommended Fuel: Premium pump
Distributor: HEI
Ignition timing: 36º Total @ 4,000 rpm
Maximum Recommended RPM: 5,800 rpm
Flexplate: 12.750"
Balanced: External
• Requires four-barrel carburetor, spark plug wires and additional components to complete assembly
• Comes with 12.750" externally balanced 153-tooth automatic transmission flexplate. Requires externally balanced flywheel for manual transmission.
• Requires fuel line from fuel pump to carburetor
• Designed for pre-1976 street vehicles or any off-road vehicle
• Some assembly and minor engine tuning required
• Not intended for marine applications