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&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.

The post ATK SP53NB 100% New CHEVY 377CI Stroker Forged -5cc Flat Top Pistons appeared first on ATK High Performance Engine.

Engine Specifications:

• Block: 100% New American Made 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 -16cc dished with 2 valve reliefs
• Compression Ratios: 58cc = 10.4:1 / 64cc = 9.8:1 / 70cc = 9.2:1 (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&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.

The post ATK SP35NB 100% New CHEVY 377CI Stroker Forged -16cc Dished Pistons appeared first on ATK High Performance Engine.

Engine Info:
• Oil: Conventional / Non Synthetic 10W30
• Oil Filter: Wix or K&N
• Timing: 34-36 Degrees
• Spark Plug Gap: .035”
• Firing Order: 18436572
• Octane: 91+
• Stall Converter: 2200-2800
• Exhaust: 1 5/8 Headers

Disclaimer: The parts listed are ATK’s recommendations of parts to be used to obtain our power figures listed. Power figures can vary based on parts used by the end user. 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.

The post ATK HP36C-EFINB Chevy 377CI with FITECH EFI 430HP appeared first on ATK High Performance Engine.

Engine Info:
• Oil: Conventional / Non Synthetic 10W30
• Oil Filter: Wix or K&N
• Timing: 34-36 Degrees
• Spark Plug Gap: .035”
• Firing Order: 18436572
• Octane: 91+
• Stall Converter: 2200-2800
• Exhaust: 1 5/8 Headers

Disclaimer: The parts listed are ATK’s recommendations of parts to be used to obtain our power figures listed. Power figures can vary based on parts used by the end user. 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.

The post ATK HP94C-EFINB Chevy 377CI with FITECH EFI 405HP appeared first on ATK High Performance Engine.

Engine Info:
• Oil: Conventional / Non Synthetic 10W30
• Oil Filter: Wix or K&N
• Timing: 34-36 Degrees
• Spark Plug Gap: .035”
• Firing Order: 18436572
• Octane: 91+
• Stall Converter: 2500+
• Exhaust: 1 ¾ Headers

Notes: This engine WILL NOT produce enough vacuum for power brakes.

Disclaimer: The parts listed are ATK’s recommendations of parts to be used to obtain our power figures listed. Power figures can vary based on parts used by the end user. 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.

The post ATK HP101CNB Chevy 377CI Stroker Complete Engine 460HP appeared first on ATK High Performance Engine.

Engine Info:
• Oil: Conventional / Non Synthetic 10W30
• Oil Filter: Wix or K&N
• Timing: 34-36 Degrees
• Spark Plug Gap: .035”
• Firing Order: 18436572
• Octane: 91+
• Stall Converter: 2200-2800
• Exhaust: 1 5/8 Headers

Disclaimer: The parts listed are ATK’s recommendations of parts to be used to obtain our power figures listed. Power figures can vary based on parts used by the end user. 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.

The post ATK HP36CNB Chevy 377CI Stroker Complete Engine 430HP appeared first on ATK High Performance Engine.

Engine Info:
• Oil: Conventional / Non Synthetic 10W30
• Oil Filter: Wix or K&N
• Timing: 34-36 Degrees
• Spark Plug Gap: .035”
• Firing Order: 18436572
• Octane: 91+
• Stall Converter: 2200-2800
• Exhaust: 1 5/8 Headers

Disclaimer: The parts listed are ATK’s recommendations of parts to be used to obtain our power figures listed. Power figures can vary based on parts used by the end user. 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.

The post ATK HP94CNB Chevy 377CI Stroker Complete Engine 405HP appeared first on ATK High Performance Engine.

Recommended Components:
• Balancer: Internally Balanced – PowerBond #PB1046-N
• Intake Manifold: Weiand stealth dual plane #8150
• Distributor: HEI (Iron Gear)
• Water Pump: OE long pump
• Carburetor: Quick Fuel 680CFM Vacuum secondary’s electric choke #HR-680
• Fuel Pump: Holley mechanical 110GPH #12-327-11
• Spark Plugs: Autolite #3923
• Spark Plug Wires: 8mm

Engine Info:
• Oil: Conventional / Non Synthetic 10W30
• Oil Filter: Wix or K&N
• Timing: 34-36 Degrees
• Spark Plug Gap: .035”
• Firing Order: 18436572
• Octane: 91+
• Stall Converter: 2500+
• Exhaust: 1 ¾ Headers

Notes: This engine WILL NOT produce enough vacuum for power brakes.

Disclaimer: The parts listed are ATK’s recommendations of parts to be used to obtain our power figures listed. Power figures can vary based on parts used by the end user. 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.

The post ATK HP101NB Chevy 377CI Stroker Base Engine 460HP appeared first on ATK High Performance Engine.

Recommended Components:
• Balancer: Internally balanced – PowerBond #PB1046-N
• Intake Manifold: Edelbrock performer RPM dual plane #7101
• Distributor: HEI (Iron Gear)
• Water Pump: OE long pump
• Carburetor: Quick Fuel 680CFM vacuum secondary’s electric choke #HR-680
• Fuel Pump: Holley mechanical 110GPH #12-327-11
• Spark Plugs: Autolite #3923
• Spark Plug Wires: 8mm

Engine Info:
• Oil: Conventional / Non synthetic 10W30
• Oil Filter: Wix or K&N
• Timing: 34-36 Degrees
• Spark Plug Gap: .035”
• Firing Order: 18436572
• Octane: 91+
• Stall Converter: 2200-2800
• Exhaust: 1 5/8 Headers

Disclaimer: The parts listed are ATK’s recommendations of parts to be used to obtain our power figures listed. Power figures can vary based on parts used by the end user. 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.

The post ATK HP36NB Chevy 377CI Stroker Base Engine 430HP appeared first on ATK High Performance Engine.

Recommended Components:
• Balancer: Internally Balanced – PowerBond #PB1046-N
• Intake Manifold: ATK dual plane intake
• Carburetor: Quick Fuel 680CFM Vacuum secondary’s electric choke #HR-680
• Fuel Pump: Holley mechanical 110GPH #12-327-11
• Distributor: HEI (Iron Gear)
• Spark Plugs: Autolite #3923
• Spark Plug Wires: 8mm
• Water Pump: OE long pump

Engine Info:
• Oil: Conventional / Non Synthetic 10W30
• Oil Filter: Wix or K&N
• Timing: 34-36 Degrees
• Spark Plug Gap: .035”
• Firing Order: 18436572
• Octane: 91+
• Stall Converter: 2200-2800
• Exhaust: 1 5/8 Headers

Disclaimer: The parts listed are ATK’s recommendations of parts to be used to obtain our power figures listed. Power figures can vary based on parts used by the end user. 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.

The post ATK HP94NB Chevy 377CI Stroker Base Engine 405HP appeared first on ATK High Performance Engine.