LS Based Engines - ATK High Performance Engine

ATK Chevy HPLC9N 5.3L Engine 475HP/435TQ 58 Tooth

Brandon — Wed, 26 Jun 2024 16:03:48 +0000

A 100 New GM LH6/LC9 5.3L engine that ATK has gone through and installed a performance camshaft package in. We also deleted the AFM/DOD for this engine. If you intend on using this for an application that utilizes the AFM/DOD, this must be turned off in the ECM. This engine will come with the valve covers and timing cover, NO OIL PAN OR PUMP. This is an all aluminum engine that is known for its extra thick cylinder sleeves. These are limited production, only 50 of them will be sold. *Dyno figures are based on using a 750CFM carburetor and Vic Jr. intake manifold with 1 7/8 headers. With an EFI system this will pick up power.

NO DISCOUNTS AVAILIBLE

Engine Specifications:
• HP: 475
• TQ: 430
• Block: New GM 5.3L Aluminum
• Bore/Stroke: 3.780”x 3.622
• Displacement (cu.in): 323
• Crankshaft: OEM GM 58 tooth reluctor wheel
• Rods: Stock GM
• Pistons: Hypereutectic Flat Top 9.9:1 compression
• Rings: Moly
• Camshaft: Hyd. roller
• Cam Specs: 223/231 @50 .610/.617 112LSA COMP CAM #54-457-11
• Cylinder Heads: OE 799 or 243 aluminum 65cc 2.000”/1.575” valves
• Rocker Arms: OE powdered metal 1.7 ratio

Recommended Components:
• Oil- 5W30
• Fuel System – OE EFI System
• Intake – Stock Fuel Injected or Aftermarket
• Balancer- Stock Internally Balanced
• Flex plate/Flywheel- Stock Internally Balanced
• Spark Plug- Stock
• Spark Plug Gap- .035”
• Timing- Set to Factory Specifications Via PCM Module (Tune Required)
• Firing Order- Stock
• Fuel – 91 Octane
• Recommended Stall Converter- 2200+ based on application
• Headers- 1 7/8” depending on application

Notes: This engine is a brand new GM 5.3L that GM built for 2005-2009 Trucks and SUV’s. ATK did a camshaft and valve spring upgrade along with AFM/DOD delete. For optimal Performance you will need headers, chassis dyno tune (required) and upgraded injectors. If you are using this as a swap for a vehicle mentioned above, the AFM/DOD will have to be turned off in the ECM. Power figures may vary depending on which induction system is used. Dyno figures are based on using a 750CFM carburetor and Vic Jr. intake manifold with 1 7/8 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 Chevy HPLC9N 5.3L Engine 475HP/435TQ 58 Tooth appeared first on ATK High Performance Engine.

ATK Chevy HPLH6N 5.3L Engine 475HP/435TQ (Copy)

Brandon — Wed, 26 Jun 2024 16:02:01 +0000

NO DISCOUNTS AVAILIBLE

Engine Specifications:
• HP: 475
• TQ: 430
• Block: New GM 5.3L Aluminum
• Bore/Stroke: 3.780”x 3.622
• Displacement (cu.in): 323
• Crankshaft: OEM GM 24 tooth reluctor wheel
• Rods: Stock GM
• Pistons: Hypereutectic Flat Top 9.9:1 compression
• Rings: Moly
• Camshaft: Hyd. roller
• Cam Specs: 223/231 @50 .610/.617 112LSA COMP CAM #54-457-11
• Cylinder Heads: OE 799 or 243 aluminum 65cc 2.000”/1.575” valves
• Rocker Arms: OE powdered metal 1.7 ratio

The post ATK Chevy HPLH6N 5.3L Engine 475HP/435TQ (Copy) appeared first on ATK High Performance Engine.

ATK LS01C Chevy LS 408 Stroker Complete Engine 600+ HP

highperforman3 — Thu, 25 May 2023 18:03:19 +0000

This engine was designed to be a powerhouse with great top end power. It requires headers and a higher stall converter. Power brakes may not work due to minimal vacuum. Does not come with ignition control. Your engine may not necessarily come with all components listed, but they are listed as our recommendations of parts to run for optimal performance.

Engine Specifications:
• HP: 600
• TQ: 550
• Block: Seasoned OE LQ4 6.0L iron
• Bore/Stroke: 4.030 x 4.000
• Displacement (cu.in): 408ci
• Crankshaft: Manley 4340 forged internally balanced 58 tooth reluctor
• Rods: Manley 4340 forged H beam with ARP 8740 bolts
• Pistons: Manley 2618 forged 10.3:1 compression
• Rings: Moly
• Camshaft: Hyd. Roller
• Cam Specs: 240/256@50 .625/.625 113LSA
• Timing Chain: Billet single roller
• Cylinder Heads: LS3 aluminum 68.4cc/260cc 2.16/1.59 stainless steel valves
• Rocker Arms: OE 1.7 ratio with bushing upgrade
• Oil Pump: Melling STD Volume high pressure
• Balancer: PowerBond #PB1480-SS SFI internally balanced
• Intake Manifold: Edelbrock victor Jr. #28457
• Carburetor: Quick Fuel 850cfm mechanical secondary’s #Q-850
• Spark Plugs: Autolite #104
• Spark Plug Wires: MSD #5574

Engine Info:
• Flexplate/Flywheel: Internally balanced
• Water Pump: Per application
• Oil: Conventional / Non Synthetic 10W40
• Oil Filter: Wix or K&N
• Timing Control: We recommend MSD #6014 with a baseline of: 10deg @ 0RPM, 20deg @ 500RPM, 26deg @ 1500RPM and 31deg @ 2500RPM-6500RPM.
• Spark Plug Gap: .040”
• Firing Order: 18726543
• Octane: 91+
• Stall Converter: 3000+
• Exhaust: 1 ¾” Headers

Notes: A PCV valve must be ran; please follow the valve cover instructions provided. You must also run an Air-Oil separator system such as the Moroso #85487 to capture the excess crankcase vapors LS engines are known for. If you are not running a MAP Sensor, the MAP timing option in the timing control box must be zeroed out all the way across. Failure to do so will allow the controller to add timing which can lead to detonation. You must also run some sort of a steam line kit that dumps to your water pump, radiator or radiator hose; we recommend a 4 corner setup like the Trick Flow #TFS-306SB601. This allows air pockets/hot spots to escape the heads and can also be used to purge out trapped air when filling the radiator for the first time.
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 LS01C Chevy LS 408 Stroker Complete Engine 600+ HP appeared first on ATK High Performance Engine.

ATK LS02 Chevy LS3 415CI Stroker Base Engine 620+HP

highperforman3 — Wed, 17 May 2023 17:03:28 +0000

This LS3/415CI Stroker with LS3 Aluminum heads is making 620HP+. Expect big mid to upper end power, will have a noticeable idle. For optimal Performance you will need headers, chassis dyno tune and 36lb injectors. Your engine may not necessarily come with all components listed, but they are listed as our recommendations of parts to run for optimal performance.

Engine Specifications:
• HP: 620
• TQ: 550
• Block: New GM LS3 Aluminum
• Bore/Stroke: 4.065 x 4.000
• Displacement (cu.in): 415ci
• Crankshaft: Manley 4340 forged internally balanced 58 tooth reluctor
• Rods: Manley 4340 forged H beam with ARP 8740 bolts
• Pistons: Manley 2618 forged 10.3:1 compression
• Rings: Moly
• Camshaft: Hyd. Roller
• Cam Specs: 240/256@50 .625/.625 113LSA
• Timing Chain: Billet single roller
• Cylinder Heads: LS3 aluminum 68.4cc/260cc 2.16/1.59 stainless steel valves
• Rocker Arms: OE 1.7 ratio with bushing upgrade

Recommended Components:
• Oil Pump: Melling STD Volume high pressure
• Balancer: PowerBond #PB1480-SS SFI internally balanced
• Intake Manifold: Edelbrock victor Jr. #28457
• Carburetor: Quick Fuel 850cfm mechanical secondary’s #Q-850
• Spark Plugs: Autolite #104
• Spark Plug Wires: MSD #5574

The post ATK LS02 Chevy LS3 415CI Stroker Base Engine 620+HP appeared first on ATK High Performance Engine.

ATK LS01 Chevy LQ4 408CI Stroker Base Engine 600+HP

highperforman3 — Wed, 17 May 2023 16:57:59 +0000

This LQ4/408CI Stroker with LS3 Aluminum heads is making 600HP+. Expect big mid to upper end power, will have a noticeable idle. For optimal Performance you will need headers, chassis dyno tune and 36lb injectors. Your engine may not necessarily come with all components listed, but they are listed as our recommendations of parts to run for optimal performance.

The post ATK LS01 Chevy LQ4 408CI Stroker Base Engine 600+HP appeared first on ATK High Performance Engine.

ATK LQ9-LB-1 Chevy LQ9 365CI/6.0L Base Engine 550HP

highperforman3 — Wed, 17 May 2023 16:41:04 +0000

This is an LQ9 based engine with LS3 Aluminum heads making a very streetable 550HP+. Expect big mid to upper end power, will have a noticeable idle. For optimal Performance you will need headers, chassis dyno tune and 36lb injectors. Your engine may not necessarily come with all components listed, but they are listed as our recommendations of parts to run for optimal performance.

Engine Specifications:
• HP: 550
• TQ: 490
• Block: New GM 6.0L Iron Gen IV
• Bore/Stroke: 4.000” x 3.622”
• Displacement (cu.in): 364
• Crankshaft: OE reground 3.622” internally balanced 24 tooth
• Rods: Scat 4340 forged I beam 6.125” with ARP 8740 bolts
• Pistons: Manley forged 10.3:1 compression
• Rings: Moly
• Camshaft: Hyd. Roller
• Cam Specs: Custom performance grind
• Lifters: GM LS7
• Timing Chain: Billet HD .250” roller
• Cylinder Heads: GM LS3 aluminum 68.4cc/260cc 2.165”/1.590” valves
• Rocker Arms: OE 1.7 ratio
• Oil Pump: Melling

Recommended Components:
• Flexplate/Flywheel: Stock internally balanced
• Balancer: Stock internally balanced/per application
• Intake Manifold: Stock/Aftermarket EFI intake or Carbureted setup
• Water Pump: Per application
• Fuel Pump: Electric per application
• Fuel Injectors: 36lb injectors
• Spark Plugs: NGK #3186
• Spark Plug Wires: Factory

Engine Info:
• Oil: Conventional / Non Synthetic 10W30
• Oil Filter: Wix or K&N
• Timing: Set to factory specifications via PCM module (ECM TUNING REQUIRED).
• Spark Plug Gap: .040”
• Firing Order: 18726543
• Octane: 91+
• Stall Converter: 2500+
• Exhaust: 1 5/8 + Headers

Notes: This engine can be swapped into a 2001-2007 6.0L application with a Gen III to Gen IV conversion kit or any other factory LS equipped vehicle. It can also be retrofitted for aftermarket EFI/Carb setups. ECM MUST BE TUNED, not doing so can damage the engine. A PCV valve must be ran; please follow the valve cover instructions provided. You must also run an Air-Oil separator system such as the Moroso #85487 to capture the excess crankcase vapors LS engines are known for. If you are not running a MAP Sensor, the MAP timing option in the timing control box must be zeroed out all the way across. Failure to do so will allow the controller to add timing which can lead to detonation. You must also run some sort of a steam line kit that dumps to your water pump, radiator or radiator hose; we recommend a 4 corner setup like the Trick Flow #TFS-306SB601. This allows air pockets/hot spots to escape the heads and can also be used to purge out trapped air when filling the radiator for the first time.

The post ATK LQ9-LB-1 Chevy LQ9 365CI/6.0L Base Engine 550HP appeared first on ATK High Performance Engine.

ATK LM7-LB-3 Chevy LM7/LS1 383CI Base Engine 515HP+

highperforman3 — Wed, 17 May 2023 16:36:49 +0000

This is an LM7 (Iron LS1/LS6) based engine with CNC Ported Cathedral Port Aluminum heads making a very streetable 515HP+. Expect big mid to upper end power, will have a noticeable idle. For optimal Performance you will need headers, chassis dyno tune and 36lb injectors. Your engine may not necessarily come with all components listed, but they are listed as our recommendations of parts to run for optimal performance.

Engine Specifications:
• HP: 515
• TQ: 505
• Block: OE LM7 5.3L Gen III
• Bore/Stroke: 3.903” x 4.000”
• Displacement (cu.in): 383
• Crankshaft: K1 4340 forged 24 tooth
• Rods: Scat 4340 forged I beam 6.125” with ARP 8740 bolts
• Pistons: Wiseco forged 10.3:1 compression
• Rings: Moly
• Camshaft: Hyd. Roller
• Cam Specs: 218/224 @50 .604/.604 112LSA
• Timing Chain: Billet HD .250” roller
• Cylinder Heads: CNC ported cathedral port cores 2.02/1.60 valves, dual springs, titanium retainers
• Rocker Arms: OE 1.7 ratio
• Oil Pump: Melling

Notes: This engine can replace the 1999-2007 Chevy 5.3L LM7 engine with supporting modifications or any other factory LS equipped vehicle. It can also be retrofitted for aftermarket EFI/Carb setups. ECM MUST BE TUNED, not doing so can damage the engine. : A PCV valve must be ran; please follow the valve cover instructions provided. You must also run an Air-Oil separator system such as the Moroso #85487 to capture the excess crankcase vapors LS engines are known for. If you are not running a MAP Sensor, the MAP timing option in the timing control box must be zeroed out all the way across. Failure to do so will allow the controller to add timing which can lead to detonation. You must also run some sort of a steam line kit that dumps to your water pump, radiator or radiator hose; we recommend a 4 corner setup like the Trick Flow #TFS-306SB601. This allows air pockets/hot spots to escape the heads and can also be used to purge out trapped air when filling the radiator for the first time.

The post ATK LM7-LB-3 Chevy LM7/LS1 383CI Base Engine 515HP+ appeared first on ATK High Performance Engine.

ATK LM7-LB-4 Chevy LM7/LS1 383CI Base Engine 540HP+

highperforman3 — Wed, 17 May 2023 16:34:13 +0000

This is an LM7 (Iron LS1/LS6) based engine with CNC Ported Cathedral Port Aluminum heads making a very streetable 540HP+. Expect big mid to upper end power, will have a noticeable idle. For optimal Performance you will need headers, chassis dyno tune and 36lb injectors. Your engine may not necessarily come with all components listed, but they are listed as our recommendations of parts to run for optimal performance.

Engine Specifications:
• HP: 540
• TQ: 505
• Block: OE LM7 5.3L Gen III
• Bore/Stroke: 3.903” x 4.000”
• Displacement (cu.in): 383
• Crankshaft: K1 4340 forged 24 tooth
• Rods: Scat 4340 forged I beam 6.125” with ARP 8740 bolts
• Pistons: Wiseco forged 10.6:1 compression
• Rings: Moly
• Camshaft: Hyd. Roller
• Cam Specs: 228/234 @50 .604/.609 112LSA
• Timing Chain: Billet HD .250” roller
• Cylinder Heads: CNC ported cathedral port cores 2.02/1.60 valves, dual springs, titanium retainers
• Rocker Arms: OE 1.7 ratio
• Oil Pump: Melling

The post ATK LM7-LB-4 Chevy LM7/LS1 383CI Base Engine 540HP+ appeared first on ATK High Performance Engine.

ATK LM7-LB-2 Chevy LM7/LS1 347CI Base Engine 500HP

highperforman3 — Wed, 17 May 2023 16:29:34 +0000

This is an LM7 (Iron LS1/LS6) based engine with CNC Ported Cathedral Port Aluminum heads making a very streetable 500HP+. Expect big mid to upper end power, will have a noticeable idle. For optimal Performance you will need headers, chassis dyno tune and 36lb injectors. Your engine may not necessarily come with all components listed, but they are listed as our recommendations of parts to run for optimal performance.

Engine Specifications:
• HP: 500
• TQ: 450
• Block: OE LM7 5.3L Gen III
• Bore/Stroke: 3.903” x 3.622”
• Displacement (cu.in): 347
• Crankshaft: OEM GM 24 tooth reluctor wheel
• Rods: Scat 4340 forged I beam 6.125” with ARP 8740 bolts
• Pistons: Wiseco forged 10.3:1 compression
• Rings: Moly
• Camshaft: Hyd. Roller
• Cam Specs: 228/234 @50 .604/.609 112LSA
• Timing Chain: Billet HD .250” roller
• Cylinder Heads: CNC ported cathedral port cores 2.02/1.60 valves, dual springs, titanium retainers
• Rocker Arms: OE 1.7 ratio
• Oil Pump: Melling

The post ATK LM7-LB-2 Chevy LM7/LS1 347CI Base Engine 500HP appeared first on ATK High Performance Engine.

ATK LQ4-LB-1 Chevy LQ4 365CI/6.0L Base Engine 550HP

highperforman3 — Wed, 17 May 2023 16:24:36 +0000

This is an LQ4 based engine with LS3 Aluminum heads making a very streetable 550HP+. Expect big mid to upper end power, will have a noticeable idle. For optimal Performance you will need headers, chassis dyno tune and 36lb injectors. Your engine may not necessarily come with all components listed, but they are listed as our recommendations of parts to run for optimal performance.

Engine Specifications:
• HP: 550
• TQ: 490
• Block: GM 6.0L Iron Gen III LQ4
• Bore/Stroke: 4.030” x 3.622”
• Displacement (cu.in): 370
• Crankshaft: OE reground 3.622” internally balanced 24 tooth
• Rods: Scat 4340 forged I beam 6.125” with ARP 8740 bolts
• Pistons: Manley forged 10.3:1 compression
• Rings: Moly
• Camshaft: Hyd. Roller
• Cam Specs: Custom performance grind
• Lifters: GM LS7
• Timing Chain: Billet HD .250” roller
• Cylinder Heads: ATK LS3 aluminum 68.4cc/260cc 2.165”/1.590” valves
• Rocker Arms: OE 1.7 ratio
• Oil Pump: Melling

Notes: This engine can be used as an upgrade for the 2001-2007 Chevy trucks with the LQ4 6.0L or swapped into many other applications. ECM MUST BE TUNED, not doing so can damage the engine. : A PCV valve must be ran; please follow the valve cover instructions provided. You must also run an Air-Oil separator system such as the Moroso #85487 to capture the excess crankcase vapors LS engines are known for. If you are not running a MAP Sensor, the MAP timing option in the timing control box must be zeroed out all the way across. Failure to do so will allow the controller to add timing which can lead to detonation. You must also run some sort of a steam line kit that dumps to your water pump, radiator or radiator hose; we recommend a 4 corner setup like the Trick Flow #TFS-306SB601. This allows air pockets/hot spots to escape the heads and can also be used to purge out trapped air when filling the radiator for the first time.

The post ATK LQ4-LB-1 Chevy LQ4 365CI/6.0L Base Engine 550HP appeared first on ATK High Performance Engine.