SP104 Elite Series GM Gen V LT 416 ci. Short Block w/Forged Crank, H-Beam Rods, +10 cc Dished Forged Pistons

Name: SP104 Elite Series GM Gen V LT 416 ci. Short Block w/Forged Crank, H-Beam Rods, +10 cc Dished Forged Pistons
Brand: ATK ENGINES
SKU: 059-SP104
Price: 7387.52 USD
Availability: InStock

^$7,387⁵²

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Ships on Sep 04, 2026

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416 ci.

Elite Series GM Gen V LT Short Block

416 ci. Displacement

GM LT1, LT4 Aluminum Block (4.065 in. Bore)

Forged 4340 Steel Crank (4 in. Stroke)

Forged 4340 H-Beam Rods

Forged 2618 Dished +10 cc Pistons

Steel Top Rings w/Napier 2nd Ring Set

ATK Engines SP104 Elite Series GM Gen V LT Short Block Features:

New GM Gen V LT1/LT4 Aluminum Block
Built for Naturally Aspirated, Boosted, or Nitrous Engines
Installed Factory Piston Squirters

ATK Engines SP104 Elite Series GM Gen V LT Short Block Specs:

Bore: 4.065 in.
Stroke: 4 in.
Displacement: 416 ci.
Crankshaft: Manley 4340 Forged w/58 Tooth Reluctor Wheel
Rods: Manley 4340 forged H-beam 6.125 in. w/ARP 2000 bolts
Pistons: 2618 Forged +10 cc Dished
Rings: Total Seal CS AP Steel Top Ring with Napier 2nd Ring Set
Camshaft Bearings: Installed & Positioned to OEM Position
Freeze Plugs: Installed with Sealant
Oil Galley Plugs: Installed with Sealant

ATK Engines SP104 Recommended Components (Each Sold Separately):

Balancer Internally balanced such as TCI 918856 or equivalent
Flexplate Internally balanced such as TCI 399860 or equivalent
Head Gasket .051 in. Compressed Thickness such as Cometic C15203-051 or equivalent
OEM-Style Oil Pump such as AC Delco 12686434 or equivalent
5W30 NON-SYNTHETIC oil for first 3000 miles

Please CLICK HERE for ATK Warranty

LT Short Blocks Built for Power

ATK Engines Elite Series GM Gen V LT Short Blocks are available with either dome or dished pistons, making them the perfect choice for naturally aspirated, turbos, superchargers, or nitrous builds.

Part TypeEngine Short Block

Product LineATK Engines Elite Series GM Gen V LT Short Blocks

BrandATK ENGINES

Package Height36.0

Package Width36.0

Package Length36.0

Weight445.0 PG

Part CategoryPerformance Parts

Part FitmentSemi Universal

Vendor Part NumberSP104

Package Qty1

Package TypeEA