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ATK GM 350 Vortec 350 HP HP32C-EFI Stage 3 EFI Engine
ATK GM 350 Vortec 350 HP HP32C-EFI Stage 3 EFI Engine features elite fuel injection technology combined with rugged cast iron heads to deliver reliable power for modern Chevy builds.
- Performance Output: Reliable 320 HP.
- Total Displacement: 5.9L / 360 CI.
- Head Construction: Cast Iron Material.
- Block Composition: Cast Iron Foundation.
- Valvetrain: Hydraulic roller OE cam.
ATK Performance Limited Warranty Included.
ATK GM 350 Vortec 350 HP HP32M Stage 2 Long Block
ATK GM 350 Vortec 350 HP HP32M Stage 2 Long Block provides track-validated Vortec performance featuring rugged cast iron heads and a professional mid-dress assembly for street reliability.
- Power Rating: Aggressive 350 Horsepower.
- Engine Volume: 5.7L / 350 CI.
- Head Material: Cast Iron Cylinder Heads.
- Block Material: Cast Iron Block.
- Dress Level: Stage 2 Mid-Dress.
One Year Limited Warranty Included.
ATK GM 365 LQ4 550 HP LQ4-LB-1 Stage 1 Long Block
ATK GM 365 LQ4 550 HP LQ4-LB-1 Stage 1 Long Block offers precision-engineered 6.0L LS performance featuring elite aluminum heads and a reinforced cast iron block for high-power applications.
- Performance Data: Proven 550 Horsepower.
- Cylinder Volume: 6.0L / 364 CI.
- Cylinder Heads: Aluminum Head Design.
- Main Block: Cast Iron Strength.
- Camshaft Style: Hydraulic Roller Design.
Official Performance Engine Warranty Included.
ATK GM 383 Stroker 375 HP HP33 Stage 1 Long Block
ATK GM 383 Stroker 375 HP HP33 Stage 1 Long Block provides a precision-engineered 6.3L foundation featuring rugged cast iron heads and a hydraulic roller cam for street reliability.
- Output Level: Reliable 375 HP rating.
- Stroker Displacement: 6.3L / 383 CI.
- Head Material: Cast Iron Heads.
- Block Material: Cast Iron Construction.
- Valvetrain: Hydraulic roller valvetrain.
Official ATK High-Performance Warranty Included.
ATK GM 383 Stroker 415 HP HP94 Stage 1 Aluminum Head
ATK GM 383 Stroker 415 HP HP94 Stage 1 Aluminum Head provides track-validated 6.3L stroker power featuring high-flow aluminum heads for enthusiasts seeking an elite Small Block Chevy foundation.
- Total Displacement: 6.3L / 383 CI.
- Output Performance: Reliable 415 Horsepower.
- Head Construction: Aluminum Head Material.
- Block Composition: Cast Iron Block.
- Valvetrain Style: Hydraulic Roller Cam.
ATK Performance Limited Warranty Included.
ATK GM 383 Stroker 415 HP HP94C Stage 3 Carbureted
ATK GM 383 Stroker 415 HP HP94C Stage 3 Carbureted offers a precision-engineered Stage 3 assembly featuring elite aluminum heads and a ready-to-run carbureted setup for professional high-power street applications.
- Engine Volume: 6.3L / 383 CI.
- Horsepower Rating: Proven 415 HP.
- Cylinder Heads: Aluminum High-Flow Design.
- Main Block: Cast Iron Strength.
- Completion Level: Full Carbureted Setup.
One Year Limited Warranty Included.
ATK GM 383 Stroker 415 HP HP94C-EFI Stage 3 EFI Engine
ATK GM 383 Stroker 415 HP HP94C-EFI Stage 3 EFI Engine features elite fuel injection technology combined with high-flow aluminum heads to deliver reliable, track-proven power for modern performance builds.
- Actual Displacement: 6.3L / 383 CI.
- Power Data: Aggressive 415 Horsepower.
- Head Material: Aluminum Cylinder Heads.
- Block Material: Cast Iron Construction.
- Induction System: Stage 3 EFI.
Official Performance Engine Warranty Included.
ATK GM 383 Stroker 415 HP HP94M Stage 2 Aluminum Head
ATK GM 383 Stroker 415 HP HP94M Stage 2 Aluminum Head delivers professional 415 HP performance featuring high-flow aluminum heads and a mid-dress setup for reliable, high-torque street and strip builds.
- Stroker Displacement: 6.3L / 383 CI.
- Energy Output: Reliable 415 Horsepower.
- Head Type: Aluminum Head Design.
- Block Type: Cast Iron Block.
- Dress Setup: Stage 2 Mid-Dress.
Standard Factory Engine Warranty Included.
ATK GM 383 Stroker 435 HP HP36 Stage 1 Aluminum Head
ATK GM 383 Stroker 435 HP HP36 Stage 1 Aluminum Head provides a precision-engineered 6.3L foundation featuring high-flow aluminum heads and a hydraulic roller cam for aggressive performance Chevy engine builds.
- Displacement Data: 6.3L / 383 CI.
- Horsepower Level: Powerful 435 HP.
- Cylinder Volume: Aluminum Head Design.
- Structural Block: Cast Iron Material.
- Internal Valvetrain: Hydraulic Roller Cam.
Official ATK High-Performance Warranty Included.
ATK GM 383 Stroker 435 HP HP36C Stage 3 Complete Engine
ATK GM 383 Stroker 435 HP HP36C Stage 3 Complete Engine offers a precision-engineered Stage 3 assembly featuring elite aluminum heads and a ready-to-run carbureted setup for professional builds.
- Horsepower Rating: Proven 435 HP performance.
- Cylinder Volume: 6.3L / 383 CI displacement.
- Cylinder Heads: Aluminum High-Flow heads.
- Structural Block: Cast Iron Block material.
- Dress Level: Stage 3 Carbureted completion.
One Year Limited Warranty Included.
ATK GM 383 Stroker 435 HP HP36CEFI Stage 3 EFI Engine
ATK GM 383 Stroker 435 HP HP36CEFI Stage 3 EFI Engine features elite fuel injection technology combined with high-flow aluminum heads to deliver reliable track-proven power for modern performance builds.
- Engine Output: Aggressive 435 Horsepower delivery.
- Actual Displacement: 6.3L / 383 CI Stroker.
- Cylinder Head: Aluminum Head Design.
- Block Type: Cast Iron Engine Block.
- Induction System: Stage 3 EFI induction.
Official Performance Engine Warranty Included.
ATK GM 383 Stroker 435 HP HP36M Stage 2 Mid-Dress Engine
ATK GM 383 Stroker 435 HP HP36M Stage 2 Mid-Dress Engine provides professional 435 HP performance featuring high-flow aluminum heads and a mid-dress setup for reliable high-torque street and strip builds.
- Power Level: Reliable 435 Horsepower output.
- Engine Displacement: 6.3L / 383 CI displacement.
- Head Type: Aluminum Head Construction.
- Block Material: Cast Iron Block foundation.
- Completion Level: Stage 2 Mid-Dress assembly.
Standard Factory Engine Warranty Included.
ATK GM 383 Stroker 435HP HP36 Stage 1 Aluminum Head Long Block
ATK High Performance Engines HP36 Crate Engines deploy 435 hp to eliminate fleet powertrain degradation across emissions-exempt pre-1976 legal street vehicle builds, non-compatible with factory computerized vehicle configurations.
- Cylinder utilizes seasoned cast iron V8 structures
- Horsepower thumps tested 435 hp output
- Engine Capacity features 6.3L Stroker displacement
- Fuel Type demands premium 91 plus octane gasoline
- Assembly includes preinstalled high flow aluminum heads
ATK GM 383 Stroker 500 HP HP55C Stage 3 Carbureted LB
ATK GM 383 Stroker 500 HP HP55C Stage 3 Carbureted LB provides a track-validated 500 HP solution featuring elite aluminum heads and a professional carbureted setup for reliable high-torque street power.
- Engine Output: Aggressive 500 Horsepower rating.
- Stroker Displacement: 6.3L / 383 CI volume.
- Head Construction: Aluminum Cylinder Head material.
- Main Block: Cast Iron Block foundation.
- Valvetrain Style: Hydraulic roller OE cam.
ATK Performance Limited Warranty Included.
ATK GM 383 Stroker 500 HP HP55M Stage 2 Mid-Dress LB
ATK GM 383 Stroker 500 HP HP55M Stage 2 Mid-Dress LB features elite engine technology combined with high-flow aluminum heads to deliver reliable track-proven power for aggressive performance builds.
- Performance Data: Reliable 500 HP rating.
- Engine Volume: 6.3L / 383 CI displacement.
- Head Type: Aluminum Head Design.
- Structural Foundation: Cast Iron Block construction.
- Completion Level: Stage 2 Mid-Dress assembly.
Official Performance Engine Warranty Included.
ATK GM 383 Stroker 500HP HP55C Stage 3 Complete Engine
ATK High Performance Engines HP55C Crate Engines deploy 500 hp to eliminate fleet powertrain degradation across emissions-exempt pre-1976 turnkey project configurations, non-compatible with factory computerized platforms.
- Cylinder utilizes seasoned cast iron V8 structures
- Horsepower thumps tested 500 hp dyno rating
- Engine Capacity features 6.3L Stroker displacement
- Fuel Type demands premium 91 plus octane gasoline
- Assembly arrives complete with carburetor and distributor
ATK GM 383 Stroker 525 HP HP107 Stage 1 Aluminum Head
ATK GM 383 Stroker 525 HP HP107 Stage 1 Aluminum Head provides a professional 525 HP foundation featuring high-flow aluminum heads and a hydraulic roller cam for elite Chevy builds.
- Energy Output: Powerful 525 Horsepower delivery.
- Cylinder Volume: 6.3L / 383 CI Stroker.
- Cylinder Head: Aluminum Head material choice.
- Block Type: Cast Iron Engine Block.
- Valvetrain: Hydraulic roller valvetrain design.
Standard Factory Engine Warranty Included.
ATK GM 383 Stroker 525 HP HP107C Stage 3 Aluminum Head
ATK GM 383 Stroker 525 HP HP107C Stage 3 Aluminum Head delivers precision-engineered Stage 3 power featuring elite aluminum heads and a ready-to-run carbureted completion for high-power street applications.
- Output Level: High-Performance 525 HP rating.
- Displacement Data: 6.3L / 383 CI volume.
- Head Material: Aluminum Cylinder Head construction.
- Main Block: Cast Iron Block foundation.
- Induction System: Stage 3 Carbureted induction.
Official ATK High-Performance Warranty Included.