Items You Need
Connect and Cruise Kit
ZZ6 BASE TECH SPECS:
- Engine Type: Chevy Small-Block V-8
- Displacement: 350 ci
- Bore x Stroke: 4.000 in. x 3.480 in.
- Block: Cast-iron with four-bolt main caps
- Crankshaft: Forged steel, 1-piece rear main seal
- Connecting Rods: Forged powder metal
- Pistons: Hypereutectic aluminum
- Camshaft Type: Hydraulic roller (steel)
- Camshaft Lift: .474 in. intake / .510 in. exhaust
- Camshaft Duration (@.050 in.): 208-degree intake / 221-degree exhaust
- Cylinder Heads: 'Fast Burn' aluminum, 62cc combustion chambers
- Valve Size: 2.000 in. intake / 1.550 in. exhaust
- Compression Ratio: 9.72:1
- Rocker Arms: Aluminum roller style
- Rocker Arm Ratio: 1.5:1
- Distributor: HEI type
- Intake Manifold: Single plane aluminum
- Carburetor: Holley 770 cfm
- Water Pump: Cast-iron, long-style
- Recommended Fuel: Premium pump
- Ignition Timing: 36-degrees Total @ 4000 rpm
- Maximum Recommended RPM: 5800
- Flexplate: 12.750 in. diameter, 153-tooth
- Balanced: External
Installation Notes:
- Comes with a 12.750 in. externally balanced 153-tooth automatic transmission flexplate. Change to an externally balanced flywheel for manual transmission applications.
- Requires fuel line from the 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 application
- Distributor with melanized steel gear MUST be used with long-blocks and Partial engines with steel camshafts, or engine damage will occur.
T56 Super Magnum Transmission
The Chevrolet Performance T56 Super Magnum Six-Speed Manual Transmission is a TREMEC six-speed manual with high-torque capacity that specially designed for custom, retro-fit installations using Chevrolet Performance crate engines. The exterior case similar to the fourth-generation F-body transmission that uses stronger, high-capacity gear sets, input shaft, and output shaft found in the TREMEC TR6060.
T56 Super Magnum Features:
- Six-Speed Manual
- 700 lb.-ft. Maximum Torque Capacity
- 26-Spline Input Shaft
- 31-Spline Output Shaft
- Slip-Yoke Design
- Two-Position Shifter Plate Included, With the Third Position Built Into The Transmission
- 4th Gen F-Body Bellhousing and Hydraulic Throwout Bearing
- LS7-Style Flywheel and Clutch
T56 Super Magnum Gear Ratios:
- 1st: 2.66:1
- 2nd: 1.78:1
- 3rd: 1.30:1
- 4th: 1.00:1
- 5th 0.80:1
- 6th 0.63:1
Installation Notes:
This Turn-Key engine package includes the distributor, and balancer installed. The carburetor, starter, fuel pump, air conditioning pump, alternator, single belt front-end accessory drive kit, and more are also included. Chevrolet Performance also offers the ZZ6 350 base engine at a lower price, allowing you to finish your new engine your way.
The included flexplate is designed for automatic transmission applications. If using this engine in a manual transmission application, an externally-balanced flywheel is required (sold separately).
Not intended for marine use
Engine Break-In Procedure
Use conventional or break-in oil (non-synthetic) for the first oil change, be sure to check the oil level in the engine and prime the oil system with an engine priming tool.
Engines with flat tappet hydraulic cams only - Run the engine between 2,000 and 2,500 RPM's, with no-load on the engine for the first 30 minutes. This is critical to break in the camshaft.
Drive the vehicle with varying speeds and loads on the engine for the first 30 miles. Be sure not to use a lot of throttle or high RPM. Run five or six medium-throttle accelerations to about 3000 RPM (40 to 50 MPH), then letting off in gear and coasting back down to 20 MPH. Run a couple of hard throttle accelerations up to about 5000 RPM (55 to 60 MPH), then letting off in gear and coasting back down to 20 MPH.
Let the engine cool and change the oil and filter using conventional (non-synthetic) oil and check the coolant level, top off if necessary. Drive the next 500 miles normally, without high RPM's (below 5000 RPM), hard use, or extended periods of high loading. Change the oil and oil filter again using conventional (non-synthetic) oil. Keep an eye on oil level during the first thousand or so miles.
It would be suitable to use synthetic motor oil after the second recommended oil change and mileage accumulation.
19419995K2 supersedes 19419995K2, 19418136K2
Emissions Note:
This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.
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Specifications:
Motor Vehicles
WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.
Tools:
WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.
Electrical Cords
WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.