LQ4/LQ9 - Gen III Based Shortblocks - ATK High Performance Engine https://atkhp.com/product-category/gm-crate/gm-ls-shortblock/gm-ls-lq4-lq9-shortblocks/ Building Performance Engines Since 1936 Mon, 08 Jul 2024 11:26:09 +0000 en-US hourly 1 https://wordpress.org/?v=6.5.5 https://atkhp.com/wp-content/uploads/2022/12/cropped-ATKHP300x300-32x32.png LQ4/LQ9 - Gen III Based Shortblocks - ATK High Performance Engine https://atkhp.com/product-category/gm-crate/gm-ls-shortblock/gm-ls-lq4-lq9-shortblocks/ 32 32 ATK SP40-B LS 408CI Stroker Short Block -29cc Dish Pistons 24 Tooth Boost/Nos Ready https://atkhp.com/product/atk-sp40-b-ls-408ci-stroker-short-block-29cc-dish-pistons-24-tooth-boost-nos-ready/ https://atkhp.com/product/atk-sp40-b-ls-408ci-stroker-short-block-29cc-dish-pistons-24-tooth-boost-nos-ready/#respond Wed, 17 May 2023 18:50:09 +0000 https://atkhp.com/?post_type=product&p=4621 Engine Specifications: • Block: Seasoned 6.0L LQ4 with ARP main studs • Year Range: 2001-2007 • Bore/Stroke: 4.030” x 4.000” • Displacement (cu.in): 408 • Crankshaft: Manley 4340 forged 24 tooth reluctor wheel • Rods: Manley 4340 forged H beam 6.125” ARP 2000 bolts • Pistons: Manley 2618 forged -29cc dished moly skirt coated • […]

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Engine Specifications:
• Block: Seasoned 6.0L LQ4 with ARP main studs
• Year Range: 2001-2007
• Bore/Stroke: 4.030” x 4.000”
• Displacement (cu.in): 408
• Crankshaft: Manley 4340 forged 24 tooth reluctor wheel
• Rods: Manley 4340 forged H beam 6.125” ARP 2000 bolts
• Pistons: Manley 2618 forged -29cc dished moly skirt coated
• Rings: Total Seal CS AP with steel top rings gapped for boost/nitrous
• Compression Ratios: 64cc = 9.3:1 / 68cc = 9.0:1 / 72cc = 8.7:1 (can vary due to deck height/gasket thickness)
• Camshaft Bearings: Installed & Clocked to OEM Position
• Freeze Plugs: Installed & Sealed
• Oil Galley Plugs: Installed & Sealed

Recommended Components:
• Balancer- Internal balance
• Flex plate/ Flywheel- Internal balance
• Head Gasket: .051” or per application
• Oil Pump: Melling #10295 with high pressure spring

Engine Info:
• Oil: 10W40 Non synthetic for first 3000 miles
• Oil Filter: Wix or K&N per application

Notes: ATK’s Boost/Nitrous short blocks are meant for engines running these setups. Bearing clearances and ring gap have been taken into consideration for this series of short blocks.

 

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 SP40-B LS 408CI Stroker Short Block -29cc Dish Pistons 24 Tooth Boost/Nos Ready appeared first on ATK High Performance Engine.

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ATK SP39-B LS 408CI Stroker Short Block +4cc Flat Top Pistons 24 Tooth Boost/Nos Ready https://atkhp.com/product/atk-sp39-b-ls-408ci-stroker-short-block-4cc-flat-top-pistons-24-tooth-boost-nos-ready/ https://atkhp.com/product/atk-sp39-b-ls-408ci-stroker-short-block-4cc-flat-top-pistons-24-tooth-boost-nos-ready/#respond Wed, 17 May 2023 18:45:52 +0000 https://atkhp.com/?post_type=product&p=4620 Engine Specifications: • Block: Seasoned 6.0L LQ4 with ARP main studs • Year Range: 2001-2007 • Bore/Stroke: 4.030” x 4.000” • Displacement (cu.in): 408 • Crankshaft: Manley 4340 forged 24 tooth reluctor wheel • Rods: Manley 4340 forged H beam 6.125” ARP 2000 bolts • Pistons: Manley 2618 forged -4cc flat top moly skirt coated […]

The post ATK SP39-B LS 408CI Stroker Short Block +4cc Flat Top Pistons 24 Tooth Boost/Nos Ready appeared first on ATK High Performance Engine.

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Engine Specifications:
• Block: Seasoned 6.0L LQ4 with ARP main studs
• Year Range: 2001-2007
• Bore/Stroke: 4.030” x 4.000”
• Displacement (cu.in): 408
• Crankshaft: Manley 4340 forged 24 tooth reluctor wheel
• Rods: Manley 4340 forged H beam 6.125” ARP 2000 bolts
• Pistons: Manley 2618 forged -4cc flat top moly skirt coated
• Rings: Total Seal CS AP with steel top rings gapped for boost/nitrous
• Compression Ratios: 64cc = 11.9:1 / 68cc = 11.4:1 / 72cc = 11.0:1 (can vary due to deck height/gasket thickness)
• Camshaft Bearings: Installed & Clocked to OEM Position
• Freeze Plugs: Installed & Sealed
• Oil Galley Plugs: Installed & Sealed

Recommended Components:
• Balancer- Internal balance
• Flex plate/ Flywheel- Internal balance
• Head Gasket: .051” or per application
• Oil Pump: Melling #10295 with high pressure spring

Engine Info:
• Oil: 10W30 Non synthetic for first 3000 miles
• Oil Filter: Wix or K&N per application

Notes: ATK’s Boost/Nitrous short blocks are meant for engines running these setups. Bearing clearances and ring gap have been taken into consideration for this series of short blocks.

 

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 SP39-B LS 408CI Stroker Short Block +4cc Flat Top Pistons 24 Tooth Boost/Nos Ready appeared first on ATK High Performance Engine.

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ATK SP38-B LS 408CI Stroker Short Block -18cc Dish Pistons 24 Tooth Boost/Nitrous Ready https://atkhp.com/product/atk-sp38-b-ls-408ci-stroker-short-block-18cc-dish-pistons-24-tooth-boost-nitrous-ready/ https://atkhp.com/product/atk-sp38-b-ls-408ci-stroker-short-block-18cc-dish-pistons-24-tooth-boost-nitrous-ready/#respond Wed, 17 May 2023 18:44:22 +0000 https://atkhp.com/?post_type=product&p=4619 Engine Specifications: • Block: Seasoned 6.0L LQ4 with ARP main studs • Year Range: 2001-2007 • Bore/Stroke: 4.030” x 4.000” • Displacement (cu.in): 408 • Crankshaft: Manley 4340 forged 24 tooth reluctor wheel • Rods: Manley 4340 forged H beam 6.125” ARP 2000 bolts • Pistons: Manley 2618 forged -18cc dished moly skirt coated • […]

The post ATK SP38-B LS 408CI Stroker Short Block -18cc Dish Pistons 24 Tooth Boost/Nitrous Ready appeared first on ATK High Performance Engine.

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Engine Specifications:
• Block: Seasoned 6.0L LQ4 with ARP main studs
• Year Range: 2001-2007
• Bore/Stroke: 4.030” x 4.000”
• Displacement (cu.in): 408
• Crankshaft: Manley 4340 forged 24 tooth reluctor wheel
• Rods: Manley 4340 forged H beam 6.125” ARP 2000 bolts
• Pistons: Manley 2618 forged -18cc dished moly skirt coated
• Rings: Total Seal CS AP with steel top rings gapped for boost/nitrous
• Compression Ratios: 64cc = 10.2:1 / 68cc = 9.9:1 / 72cc = 9.5:1 (can vary due to deck height/gasket thickness)
• Camshaft Bearings: Installed & Clocked to OEM Position
• Freeze Plugs: Installed & Sealed
• Oil Galley Plugs: Installed & Sealed

Recommended Components:
• Balancer- Internal balance
• Flex plate/ Flywheel- Internal balance
• Head Gasket: .051” or per application
• Oil Pump: Melling #10295 with high pressure spring

Engine Info:
• Oil: 10W40 Non synthetic for first 3000 miles
• Oil Filter: Wix or K&N per application

Notes: ATK’s Boost/Nitrous short blocks are meant for engines running these setups. Bearing clearances and ring gap have been taken into consideration for this series of short blocks.

 

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.

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ATK SP37-B LS 408CI Stroker Short Block +10cc Dish Pistons 24 Tooth Boost/Nos Ready https://atkhp.com/product/atk-sp37-b-ls-408ci-stroker-short-block-10cc-dish-pistons-24-tooth-boost-nos-ready/ https://atkhp.com/product/atk-sp37-b-ls-408ci-stroker-short-block-10cc-dish-pistons-24-tooth-boost-nos-ready/#respond Wed, 17 May 2023 18:37:16 +0000 https://atkhp.com/?post_type=product&p=4618 Engine Specifications: • Block: Seasoned 6.0L LQ4 with ARP main studs • Year Range: 2001-2007 • Bore/Stroke: 4.030” x 4.000” • Displacement (cu.in): 408 • Crankshaft: Manley 4340 forged 24 tooth reluctor wheel • Rods: Manley 4340 forged H beam 6.125” ARP 2000 bolts • Pistons: Manley 2618 forged -10cc dished moly skirt coated • […]

The post ATK SP37-B LS 408CI Stroker Short Block +10cc Dish Pistons 24 Tooth Boost/Nos Ready appeared first on ATK High Performance Engine.

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Engine Specifications:
• Block: Seasoned 6.0L LQ4 with ARP main studs
• Year Range: 2001-2007
• Bore/Stroke: 4.030” x 4.000”
• Displacement (cu.in): 408
• Crankshaft: Manley 4340 forged 24 tooth reluctor wheel
• Rods: Manley 4340 forged H beam 6.125” ARP 2000 bolts
• Pistons: Manley 2618 forged -10cc dished moly skirt coated
• Rings: Total Seal CS AP with steel top rings gapped for boost/nitrous
• Compression Ratios: 64cc = 11.2:1 / 68cc = 10.7:1 / 72cc = 10.3:1 (can vary due to deck height/gasket thickness)
• Camshaft Bearings: Installed & Clocked to OEM Position
• Freeze Plugs: Installed & Sealed
• Oil Galley Plugs: Installed & Sealed

Recommended Components:
• Balancer- Internal balance
• Flex plate/ Flywheel- Internal balance
• Head Gasket: .051” or per application
• Oil Pump: Melling #10295 with high pressure spring

Engine Info:
• Oil: 10W40 Non synthetic for first 3000 miles
• Oil Filter: Wix or K&N per application

Notes: ATK’s Boost/Nitrous short blocks are meant for engines running these setups. Bearing clearances and ring gap have been taken into consideration for this series of short blocks.

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 SP37-B LS 408CI Stroker Short Block +10cc Dish Pistons 24 Tooth Boost/Nos Ready appeared first on ATK High Performance Engine.

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ATK SP36-B LS 408CI Stroker Short Block -29cc Dish Pistons 58 Tooth Boost/Nos Ready https://atkhp.com/product/atk-sp36-b-ls-408ci-stroker-short-block-29cc-dish-pistons-58-tooth-boost-nos-ready/ https://atkhp.com/product/atk-sp36-b-ls-408ci-stroker-short-block-29cc-dish-pistons-58-tooth-boost-nos-ready/#respond Wed, 17 May 2023 18:35:51 +0000 https://atkhp.com/?post_type=product&p=4617 Engine Specifications: • Block: Seasoned 6.0L LQ4 with ARP main studs • Year Range: 2001-2007 • Bore/Stroke: 4.030” x 4.000” • Displacement (cu.in): 408 • Crankshaft: Manley 4340 forged 58 tooth reluctor wheel • Rods: Manley 4340 forged H beam 6.125” ARP 2000 bolts • Pistons: Manley 2618 forged -29cc dished moly skirt coated • […]

The post ATK SP36-B LS 408CI Stroker Short Block -29cc Dish Pistons 58 Tooth Boost/Nos Ready appeared first on ATK High Performance Engine.

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Engine Specifications:
• Block: Seasoned 6.0L LQ4 with ARP main studs
• Year Range: 2001-2007
• Bore/Stroke: 4.030” x 4.000”
• Displacement (cu.in): 408
• Crankshaft: Manley 4340 forged 58 tooth reluctor wheel
• Rods: Manley 4340 forged H beam 6.125” ARP 2000 bolts
• Pistons: Manley 2618 forged -29cc dished moly skirt coated
• Rings: Total Seal CS AP with steel top rings gapped for boost/nitrous
• Compression Ratios: 64cc = 9.3:1 / 68cc = 9.0:1 / 72cc = 8.7:1 (can vary due to deck height/gasket thickness)
• Camshaft Bearings: Installed & Clocked to OEM Position
• Freeze Plugs: Installed & Sealed
• Oil Galley Plugs: Installed & Sealed

Recommended Components:
• Balancer- Internal balance
• Flex plate/ Flywheel- Internal balance
• Head Gasket: .051” or per application
• Oil Pump: Melling #10295 with high pressure spring

Engine Info:
• Oil: 10W40 Non synthetic for first 3000 miles
• Oil Filter: Wix or K&N per application

Notes: ATK’s Boost/Nitrous short blocks are meant for engines running these setups. Bearing clearances and ring gap have been taken into consideration for this series of short blocks.

 

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 SP36-B LS 408CI Stroker Short Block -29cc Dish Pistons 58 Tooth Boost/Nos Ready appeared first on ATK High Performance Engine.

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ATK SP32-B LS 408CI Stroker Short Block -4cc Flat Top Pistons 58 Tooth Boost/Nos Ready https://atkhp.com/product/atk-sp32-b-ls-408ci-stroker-short-block-4cc-flat-top-pistons-58-tooth-boost-nos-ready/ https://atkhp.com/product/atk-sp32-b-ls-408ci-stroker-short-block-4cc-flat-top-pistons-58-tooth-boost-nos-ready/#respond Wed, 17 May 2023 18:34:28 +0000 https://atkhp.com/?post_type=product&p=4616 Engine Specifications: • Block: Seasoned 6.0L LQ4 with ARP main studs • Year Range: 2001-2007 • Bore/Stroke: 4.030” x 4.000” • Displacement (cu.in): 408 • Crankshaft: Manley 4340 forged 58 tooth reluctor wheel • Rods: Manley 4340 forged H beam 6.125” ARP 2000 bolts • Pistons: Manley 2618 forged -4cc flat top moly skirt coated […]

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Engine Specifications:
• Block: Seasoned 6.0L LQ4 with ARP main studs
• Year Range: 2001-2007
• Bore/Stroke: 4.030” x 4.000”
• Displacement (cu.in): 408
• Crankshaft: Manley 4340 forged 58 tooth reluctor wheel
• Rods: Manley 4340 forged H beam 6.125” ARP 2000 bolts
• Pistons: Manley 2618 forged -4cc flat top moly skirt coated
• Rings: Total Seal CS AP with steel top rings gapped for boost/nitrous
• Compression Ratios: 64cc = 11.9:1 / 68cc = 11.4:1 / 72cc = 11.0:1 (can vary due to deck height/gasket thickness)
• Camshaft Bearings: Installed & Clocked to OEM Position
• Freeze Plugs: Installed & Sealed
• Oil Galley Plugs: Installed & Sealed

Recommended Components:
• Balancer- Internal balance
• Flex plate/ Flywheel- Internal balance
• Head Gasket: .051” or per application
• Oil Pump: Melling #10295 with high pressure spring

Engine Info:
• Oil: 10W40 Non synthetic for first 3000 miles
• Oil Filter: Wix or K&N per application

Notes: ATK’s Boost/Nitrous short blocks are meant for engines running these setups. Bearing clearances and ring gap have been taken into consideration for this series of short blocks.

 

 

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 SP32-B LS 408CI Stroker Short Block -4cc Flat Top Pistons 58 Tooth Boost/Nos Ready appeared first on ATK High Performance Engine.

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ATK SP31-B LS 408CI Stroker Short Block -18cc Dish Pistons 58 Tooth Boost/Nos Ready https://atkhp.com/product/atk-sp31-b-ls-408ci-stroker-short-block-18cc-dish-pistons-58-tooth-boost-nos-ready/ https://atkhp.com/product/atk-sp31-b-ls-408ci-stroker-short-block-18cc-dish-pistons-58-tooth-boost-nos-ready/#respond Wed, 17 May 2023 18:32:51 +0000 https://atkhp.com/?post_type=product&p=4615 Engine Specifications: • Block: Seasoned 6.0L LQ4 with ARP main studs • Year Range: 2001-2007 • Bore/Stroke: 4.030” x 4.000” • Displacement (cu.in): 408 • Crankshaft: Manley 4340 forged 58 tooth reluctor wheel • Rods: Manley 4340 forged H beam 6.125” ARP 2000 bolts • Pistons: Manley 2618 forged -18cc dished moly skirt coated • […]

The post ATK SP31-B LS 408CI Stroker Short Block -18cc Dish Pistons 58 Tooth Boost/Nos Ready appeared first on ATK High Performance Engine.

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Engine Specifications:
• Block: Seasoned 6.0L LQ4 with ARP main studs
• Year Range: 2001-2007
• Bore/Stroke: 4.030” x 4.000”
• Displacement (cu.in): 408
• Crankshaft: Manley 4340 forged 58 tooth reluctor wheel
• Rods: Manley 4340 forged H beam 6.125” ARP 2000 bolts
• Pistons: Manley 2618 forged -18cc dished moly skirt coated
• Rings: Total Seal CS AP with steel top rings gapped for boost/nitrous
• Compression Ratios: 64cc = 10.2:1 / 68cc = 9.9:1 / 72cc = 9.5:1 (can vary due to deck height/gasket thickness)
• Camshaft Bearings: Installed & Clocked to OEM Position
• Freeze Plugs: Installed & Sealed
• Oil Galley Plugs: Installed & Sealed

Recommended Components:
• Balancer- Internal balance
• Flex plate/ Flywheel- Internal balance
• Head Gasket: .051” or per application
• Oil Pump: Melling #10295 with high pressure spring

Engine Info:
• Oil: 10W40 Non synthetic for first 3000 miles
• Oil Filter: Wix or K&N per application

Notes: ATK’s Boost/Nitrous short blocks are meant for engines running these setups. Bearing clearances and ring gap have been taken into consideration for this series of short blocks.

 

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 SP31-B LS 408CI Stroker Short Block -18cc Dish Pistons 58 Tooth Boost/Nos Ready appeared first on ATK High Performance Engine.

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ATK SP26-B LS 408CI Stroker Short Block +10cc Dish Pistons 58 Tooth Boost/Nos Ready https://atkhp.com/product/atk-sp26-b-ls-408ci-stroker-short-block-10cc-dish-pistons-58-tooth-boost-nos-ready/ https://atkhp.com/product/atk-sp26-b-ls-408ci-stroker-short-block-10cc-dish-pistons-58-tooth-boost-nos-ready/#respond Wed, 17 May 2023 18:30:22 +0000 https://atkhp.com/?post_type=product&p=4614 Engine Specifications: • Block: Seasoned 6.0L LQ4 with ARP main studs • Year Range: 2001-2007 • Bore/Stroke: 4.030” x 4.000” • Displacement (cu.in): 408 • Crankshaft: Manley 4340 forged 58 tooth reluctor wheel • Rods: Manley 4340 forged H beam 6.125” ARP 2000 bolts • Pistons: Manley 2618 forged +10cc dished moly skirt coated • […]

The post ATK SP26-B LS 408CI Stroker Short Block +10cc Dish Pistons 58 Tooth Boost/Nos Ready appeared first on ATK High Performance Engine.

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Engine Specifications:
• Block: Seasoned 6.0L LQ4 with ARP main studs
• Year Range: 2001-2007
• Bore/Stroke: 4.030” x 4.000”
• Displacement (cu.in): 408
• Crankshaft: Manley 4340 forged 58 tooth reluctor wheel
• Rods: Manley 4340 forged H beam 6.125” ARP 2000 bolts
• Pistons: Manley 2618 forged +10cc dished moly skirt coated
• Rings: Total Seal CS AP with steel top rings gapped for boost/nitrous
• Compression Ratios: 64cc = 11.2:1 / 68cc = 10.7:1 / 72cc = 10.3:1 (can vary due to deck height/gasket thickness)
• Camshaft Bearings: Installed & Clocked to OEM Position
• Freeze Plugs: Installed & Sealed
• Oil Galley Plugs: Installed & Sealed

Recommended Components:
• Balancer- Internal balance
• Flex plate/ Flywheel- Internal balance
• Head Gasket: .051” or per application
• Oil Pump: Melling #10295 with high pressure spring

Engine Info:
• Oil: 10W40 Non synthetic for first 3000 miles
• Oil Filter: Wix or K&N per application

Notes: ATK’s Boost/Nitrous short blocks are meant for engines running these setups. Bearing clearances and ring gap have been taken into consideration for this series of short blocks.

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 SP26-B LS 408CI Stroker Short Block +10cc Dish Pistons 58 Tooth Boost/Nos Ready appeared first on ATK High Performance Engine.

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ATK SP40 LS 408CI Stroker Short Block -29cc Dish Pistons 24 Tooth https://atkhp.com/product/atk-sp40-ls-408ci-stroker-short-block-29cc-dish-pistons-24-tooth/ https://atkhp.com/product/atk-sp40-ls-408ci-stroker-short-block-29cc-dish-pistons-24-tooth/#respond Wed, 17 May 2023 18:28:23 +0000 https://atkhp.com/?post_type=product&p=4613 Engine Specifications: • Block: Seasoned 6.0L LQ4 • Year Range: 2001-2007 • Bore/Stroke: 4.030” x 4.000” • Displacement (cu.in): 408 • Crankshaft: Manley 4340 forged 24 tooth reluctor wheel • Rods: Manley 4340 forged H beam 6.125” ARP 8740 bolts • Pistons: Manley 2618 forged -29cc dished moly skirt coated • Rings: Plasmamoly • Compression […]

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Engine Specifications:
• Block: Seasoned 6.0L LQ4
• Year Range: 2001-2007
• Bore/Stroke: 4.030” x 4.000”
• Displacement (cu.in): 408
• Crankshaft: Manley 4340 forged 24 tooth reluctor wheel
• Rods: Manley 4340 forged H beam 6.125” ARP 8740 bolts
• Pistons: Manley 2618 forged -29cc dished moly skirt coated
• Rings: Plasmamoly
• Compression Ratios: 64cc = 9.3:1 / 68cc = 9.0:1 / 72cc = 8.7:1 (can vary due to deck height/gasket thickness)
• Camshaft Bearings: Installed & Clocked to OEM Position
• Freeze Plugs: Installed & Sealed
• Oil Galley Plugs: Installed & Sealed

Recommended Components:
• Balancer- Internal balance
• Flex plate/ Flywheel- Internal balance
• Head Gasket: .051” or per application
• Oil Pump: Melling #10295 with high pressure spring

Engine Info:
• Oil: 10W30 Non synthetic for first 3000 miles
• 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 SP40 LS 408CI Stroker Short Block -29cc Dish Pistons 24 Tooth appeared first on ATK High Performance Engine.

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ATK SP39 LS 408CI Stroker Short Block +4cc Flat Top Pistons 24 Tooth https://atkhp.com/product/atk-sp39-ls-408ci-stroker-short-block-4cc-flat-top-pistons-24-tooth/ https://atkhp.com/product/atk-sp39-ls-408ci-stroker-short-block-4cc-flat-top-pistons-24-tooth/#respond Wed, 17 May 2023 18:26:40 +0000 https://atkhp.com/?post_type=product&p=4612 Engine Specifications: • Block: Seasoned 6.0L LQ4 • Year Range: 2001-2007 • Bore/Stroke: 4.030” x 4.000” • Displacement (cu.in): 408 • Crankshaft: Manley 4340 forged 24 tooth reluctor wheel • Rods: Manley 4340 forged H beam 6.125” ARP 8740 bolts • Pistons: Manley 2618 forged -4cc flat top moly skirt coated • Rings: Plasmamoly • […]

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Engine Specifications:
• Block: Seasoned 6.0L LQ4
• Year Range: 2001-2007
• Bore/Stroke: 4.030” x 4.000”
• Displacement (cu.in): 408
• Crankshaft: Manley 4340 forged 24 tooth reluctor wheel
• Rods: Manley 4340 forged H beam 6.125” ARP 8740 bolts
• Pistons: Manley 2618 forged -4cc flat top moly skirt coated
• Rings: Plasmamoly
• Compression Ratios: 64cc = 11.9:1 / 68cc = 11.4:1 / 72cc = 11.0:1 (can vary due to deck height/gasket thickness)
• Camshaft Bearings: Installed & Clocked to OEM Position
• Freeze Plugs: Installed & Sealed
• Oil Galley Plugs: Installed & Sealed

Recommended Components:
• Balancer- Internal balance
• Flex plate/ Flywheel- Internal balance
• Head Gasket: .051” or per application
• Oil Pump: Melling #10295 with high pressure spring

Engine Info:
• Oil: 10W40 Non synthetic for first 3000 miles
• 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.

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