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High Performance Engine Block for Enhanced Power and Durability
The ATK Performance Engine Block HP73 is engineered to deliver exceptional horsepower and torque, making it a reliable choice for street performance applications. With a robust design and high-quality components, this engine block is built to withstand the demands of various vehicles, from classic cars to muscle cars and off-road vehicles.
Features
- Delivers maximum performance and long-term durability
- Constructed with dyno-proven combinations using name brand parts
- Equipped with hypereutectic pistons and moly rings for enhanced efficiency
- Includes an OE cast crankshaft for reliable operation
- Features a hydraulic roller camshaft for improved performance
- Incorporates a double roller timing chain for precise timing
- Constructed with cast iron cylinder heads for strength
- Includes steel rocker arms for durability
Specifications
- Manufacturer: ATK Performance Eng.
- Manufacturer Part Number: HP73
- Engine Compatibility: Mopar Small Block Magnum
- Recommended Use: Street Performance
- Horse Power Output: 320 Horsepower
- Torque Output: 415 Feet Pound
- Bore (IN): 4.04 Inch
- Stroke (IN): 3.58 Inch
- Compression Ratio: 9.0:1
- Color: Black/ Silver
- Cylinder Block Material: Cast Iron
- Cylinder Head Material: Cast Iron
- Balanced Type: Externally Balanced
- Includes Camshaft: Yes
- Includes Fuel Pump: Yes
- Includes Oil Pan: Yes
- Includes Water Pump: No
- Includes Intake Manifold: No
- Includes Carburetor: No
- Includes Air Cleaner: No
- Includes Distributor: No
- Marine: No
Technical Documents
Compatibility/Fit
- 1977-1980 Chrysler New Yorker
- 1971-1972 Chrysler Newport
- 1974-1980 Chrysler Newport
- 1976-1978 Dodge B100
- 1971-1974 Dodge B100 Van
- 1998-1998 Dodge B1500
- 1975-1980 Dodge B200
- 1971-1973 Dodge B200 Van
- 1981-1981 Dodge B250
- 1984-1994 Dodge B250
- 1995-1998 Dodge B2500
- 1971-1974 Dodge Challenger
- 1975-1978 Dodge Charger
- 1971-1976 Dodge Coronet
- 1975-1979 Dodge D100
- 1986-1988 Dodge D100
- 1971-1974 Dodge D100 Pickup
- 1975-1980 Dodge D200
- 1971-1974 Dodge D200 Pickup
- 1981-1982 Dodge D250
- 1984-1993 Dodge D250
- 1971-1974 Dodge Dart
- 1978-1979 Dodge Magnum
- 1980-1980 Dodge Mirada
- 1971-1974 Dodge Monaco
- 1972-1973 Dodge Polara
- 1974-1981 Dodge Ramcharger
- 1984-1988 Dodge Ramcharger
- 1975-1977 Dodge Royal Monaco
- 1975-1977 Dodge W100
- 1986-1988 Dodge W100
- 1972-1974 Dodge W100 Pickup
- 1977-1981 Dodge W150
- 1984-1991 Dodge W150
- 1993-1993 Dodge W150
- 1975-1980 Dodge W200
- 1971-1974 Dodge W200 Pickup
- 1981-1982 Dodge W250
- 1984-1993 Dodge W250
- 1971-1974 Plymouth Barracuda
- 1971-1974 Plymouth Cuda
- 1974-1976 Plymouth Duster
- 1971-1978 Plymouth Fury
- 1971-1974 Plymouth Fury I
- 1971-1974 Plymouth Fury II
- 1971-1974 Plymouth Fury III
- 1972-1977 Plymouth Gran Fury
- 1980-1980 Plymouth Gran Fury
- 1976-1978 Plymouth PB100
- 1974-1974 Plymouth PB100 Van
- 1975-1980 Plymouth PB200
- 1974-1974 Plymouth PB200 Van
- 1981-1981 Plymouth PB250
- 1974-1975 Plymouth Road Runner
- 1971-1974 Plymouth Satellite
- 1975-1981 Plymouth Trailduster
- 1971-1974 Plymouth Valiant
- 1976-1976 Plymouth Valiant
- 1976-1980 Plymouth Volare
Shipping & Returns
- This product ships to the US and Canada. Canadian orders may incur customs, import duties, and brokerage fees. Please review our shipping policy. To estimate these potential additional costs, we recommend using this calculator.
- This product typically ships within 1 to 3 business days.
- Returns are accepted within 30 days for items in like-new condition. For complete details, please see our return policy.
