ATK Engines HP451PC High Performance Crate Engine Big Block Chevy 454ci / 525HP / 550TQ
059-HP451PC
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Complete Engine
ATK Core Return Process
JEGS and ATK appreciate your business and want to ensure that your core return is as smooth as possible.
Please CLICK HERE for ATK Core Return Process
NOTE:
- Core return can be any Big Block Chevy 454ci engine
Engine Info
- Balancer: External balance
- Carburetor: Quick Fuel 680cfm vacuum secondary electric choke #793-HR-680-VS
- Distributor: HEI (iron gear)
- Exhaust: 1-5/8" Headers
- Firing Order: 18436572
- Flexplate: External balance
- Intake Manifold: Edelbrock Performer RPM dual plane #350-7161
- Octane: 91+
- Oil: 10W30 (Conventional / Non Synthetic) with zin additive for first 3000 miles
- Oil Filter: Wix or K&N
- Spark Plug Gap: .035"
- Spark Plugs: Autotile #417-3923
- Spark Plug Wires: 8mm
- Stall Converter: 2200-2500
- Timing: 34-36 Degrees
- Water Pump: OE long pump
Recommended Components
- Fuel Pump: No mechanical fuel pump provision, must run an electric pump
Disclaimer: The parts listed are ATK's recommendations of parts to be used to obtain the power figures listed. Power figures can vary based on parts used by the end user. Some modifications to the vehicle may be required using these and or other aftermarket parts.
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.
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. Let the engine cool down completely and repeat process 2-3 more times. Do not idle the engine for any extended period at this time, this is critical to break in the camshaft.
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 fit in a 1985 GMC 1500 without modification, also is it offered as turn key drop in
Will this fit into a 74 Chevy nova
Will this fit in a 94 c1500 Silverado and what do I need to put it in there
Does it work good with power brakes?
Can it bolt into a 1970-74 Chevrolet Corvette?
Would the motor be able to fit in a 325i BMW E30 with some modifications, and what would be the idea trans for the engine
Will it fit in a 1994 mustang?
Will this fit a 1951 Chevrolet style line deluxe or could it be made to fit
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.