ATK Engines HP108C High-Performance Crate Engine Big Block Chevy 632 ci / 800 HP / 800 ft.-lbs. TQ
059-HP108C
Product Q&A
View Now
Items You Need
Complete Engine
Engine Information:
- Fuel Delivery: Holley Carburetor 1150 cfm
- Intake Manifold: Edelbrock Super Victor Single Plane
- Spark Plugs: Autolite #AR3934
- Spark Plug Gap: .035
- Harmonic Balancer: Internally Balanced 8 in.
- Flexplate: Internally Balanced 168 tooth
- Timing: 34-36 Degrees
- Distributor: Pro Billet
- Firing Order: 1 8 4 3 6 5 7 2
- Exhaust Size: 2 1/8 in headers
- Torque Converter Stall: 3000+
Technical Information:
- Block: Dart Big M 10.2 4-Bolt Main 2 piece rear main seal
- Bore/Stroke: 4.600 in. x 4.750 in.
- Crankshaft: Scat 4340 Forged 4.750 in. Stroke Internally Balanced 2 piece
- Connecting Rods: Scat 4340 Forged H Beam 6.700 in. ARP 8740 Bolts
- Pistons: Forged
- Piston Rings: Moly Rings
- Compression Ratio: 10.3:1 compression
- Camshaft: Hydraulic Roller
- Camshaft Bearings: Installed and Clocked to OEM position
- Cylinder Heads: Dart Aluminum 121 cc / 345 cc 2.300 in. / 1.880 in.
- Freeze Plugs: Brass Installed and Sealed
- Rocker Arms: Howards Billet Aluminum Full Roller 1.70 in. ratio
- Oil Galley Plugs: Installed and Sealed
- Oil Pan: Moroso 6 quarts
Engine Break-In Procedure
Use or break-in oil or conventional (non-synthetic) 10W30 oil with zinc additive for the first 500 miles of operation. Do not drive for long periods at any single speed, always vary your speed. Do not tow a trailer or put other heavy loads on the vehicle. It is best to avoid long periods of idling during this period. Check the engine oil and coolant levels daily.
At 500 Miles change the engine oil and filter using conventional (non-synthetic) oil with a zinc additive. Check fuel and ignition settings, adjust valves (where applicable). Drive the next 500 miles normally, without high RPM's (below 5000 RPM), hard use, or extended periods of high loading or long periods of idling.
Change the oil and oil filter again at 1,000 miles. Continue using conventional (non-synthetic) oils and zinc additive, until about 4,000 miles. At that point, you may run a quality 10w30 synthetic oil if you choose. Use of oil with zinc or a zinc additive for the life of your engine is recommended.
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.
CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART
Specifications:
Will this engine replace the 496 in a chevrolet 2500 truck?
Is this a tall deck block, or standard deck height?
Does this engine require race gas or 93 octane
Will the 632 ci big block fit in a 71 chevelle ss
Will a 632 Big Block Fit inside of 1994-1996 Chevrolet Impala?
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.