Looking to upgrade your old engine using your existing heads? This Short Block uses a 100% New American Made Block and is outfitted with a Scat crank kit. All the hard work is done, you just need to finish it off. Engine Specifications: • Block: 100% New ATK Block 1pc Seal Bore/Stroke: 4.000” x 3.750” Displacement: 377CI Crankshaft: Scat 4340 forged external balance rear of the crank/internal balance front of the crank Rods: Scat 4340 forged H beam with ARP 8740 bolts Pistons: 2618 Forged -5cc flat top Compression Ratios: 58cc = 11.9:1 / 64cc = 11.1:1 / 70cc = 10.3:1 (can vary due to deck height/gasket thickness) Rings: Plasmamoly Camshaft Bearings: Dura-Bond, installed and clocked to OEM position Freeze Plugs: Brass, installed and sealed Oil Galley Plugs: Installed and sealed Flexplate/Flywheel: External balance 168 tooth (with Scat kit) Recommended Components: Balancer: Internal balance Head Gasket: .038” or per application Engine Info: Oil: Conventional / Non Synthetic 10W30 Oil Filter: Wix or K and N per application Disclaimer: The recommended components listed are ATK’s recommendations of parts to be used, applications vary and your build may need something different. Contact ATK for a recommendation if you’re not certain about a component to use. It is the customer’s responsibility to verify components will work in their application. Some modifications to the vehicle may be required using these and or other aftermarket parts. ATK reserves the right to substitute parts used in engines if necessary.
Highlights
- Oil: Conventional / Non Synthetic 10W30
- Oil Filter: Wix or K&N
- Timing: Set to factory specifications via PCM module (ECM TUNING REQUIRED).
Specifications
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Crate Engine Type: Short Block
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Engine Displacement: 6.2 liters
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Camshaft Type: Hydraulic Roller
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Piston Material: Forged Aluminum
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Crankshaft Material: Forged 4340 Steel
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Camshaft Duration (.050 in): 225° intake / 238° exhaust
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Camshaft Lift (in): .612 intake / .585 exhaust
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Bore x Stroke (in): 4.060" x 3.620"
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Carburetor Included: No
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Intake Manifold Included: No
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Distributor Included: No
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Connecting Rod Material: Forged 4340 Steel
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Valve Covers Included: No
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Assembled: No
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Engine Balance: Internal
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Cylinder Heads Included: No
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Rear Main Seal Style: 1-piece
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Throttle Body Included: No
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Oil Pan Included: No
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Timing Cover Included: No
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Water Pump Included: No
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Harmonic Balancer Included: No
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Flexplate Included: No
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Flywheel Included: No
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Air Cleaner Included: No
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Spark Plugs Included: No
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Spark Plug Wires Included: No
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Computer Included: No
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Wiring Harness Included: No
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Material Type: Cast Iron
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MFG. Part #: SP53NB
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GTIN Code: 00653517679018
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Sold in Quantity: Each
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Connecting Rod Beam Style: H-Beam
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Piston Style: Flat Top
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Brand: ATK Engines
