416ci Forged LT4 Stroker Long Block – 1000+ RWHP Capable

Built by LME (Late Model Engines) • Dyno Tested • Ready for Your Project

We currently have one professionally built 416ci forged LT4-based long block available for sale. This engine was built by Late Model Engines (LME), one of the most respected names in high-performance GM engine builds.

Designed for serious forced induction applications, this engine features a fully forged rotating assembly, upgraded valvetrain, and precision machining and is capable of supporting 1000+ RWHP with the proper setup.

The engine has been professionally assembled, balanced, blueprinted, and dyno tested, making it an excellent option for someone looking for a high-end LT platform engine without the wait time of a custom build.

The engine is currently configured as a wet sump setup, making it ideal for engine swap applications, but it can easily be converted back to a dry sump configuration for Corvette applications if desired.

This engine can also be purchased with or without a Kong ported LT4 supercharger.

Engine Specs

• 416ci LT Stroker

• 4.070” Bore

• 4.000” Stroke

• 10.5:1 Compression

• 58x Reluctor

• Wet Sump Setup (Dry Sump Convertible)

• Built for Positive Displacement Supercharger Applications

• 1000+ RWHP Capability with proper setup

Forged Rotating Assembly

Built to handle serious boost and power.

• Forged 4340 4.000” stroke crankshaft

• Forged 4340 H-beam connecting rods with ARP hardware

• Custom forged pistons designed for boosted applications

• Lateral gas ports and double pin oilers

• Anti-friction skirt coating

• Boost-specific piston ring package

• Performance rod and main bearings

• ARP main studs

Cylinder Heads & Valvetrain

Upgraded for high boost durability and RPM stability.

• Bronze valve guides

• Inconel exhaust valves

• High performance LT4 valve spring kit

• High RPM hydraulic roller lifters

• Chromoly pushrods

• Factory LT rocker arms with bronze trunnion upgrade

• ARP head studs

• MLS head gaskets

Camshaft & Timing

• Blower-specific performance camshaft

• Heavy duty timing chain

• Billet timing chain guide

• Billet VVT delete front cover assembly

Oiling & Supporting Components

• Billet gear wet sump oil pump

• Stroker-clearanced performance oil pan

• Heavy duty harmonic balancer

• New seals and hardware throughout

Professional Assembly & Dyno Testing

This engine was assembled and tested by Late Model Engines using their precision engine building process.

Assembly included:

• Camshaft degreeing

• Piston-to-valve clearance verification

• Valve train geometry setup

• Lifter preload adjustment

• Complete long block assembly

The engine was also dyno tested and heat cycled to verify proper operation before being made available.

Optional Upgrade

Kong Ported LT4 Supercharger Available

This engine can be purchased with or without a Kong ported LT4 blower, a proven upgrade that significantly improves airflow and power potential over the factory unit.

Perfect For

• High horsepower street builds

• Camaro / CTS-V / restomod swaps

• High boost LT builds

• Anyone wanting a ready-to-go forged LT engine without the long build wait

Availability

One engine available.

If you're looking for a serious LT-based powerplant, this professionally built LME 416 stroker is ready for the right project.

📞 Contact us for pricing, blower package options, and additional details.