GM Atlas 4200 to LS Engine Adapter Kit

Atlas 4200 to LS Transmission Adapter Kit

Atlas 4.2 Inline Six to LS Transmission Adapter System

The Atlas 4200 to LS transmission adapter kit provides a complete solution for pairing the GM Atlas 4.2 inline six engine with LS based transmissions. Designed for precision strength and ease of installation this system allows builders to run a wide range of LS manual and automatic transmissions without fabrication.

Machined from 6061 billet aluminum this adapter ensures accurate alignment and long term durability making it ideal for performance builds off road applications and custom swaps.

Engineered for Strength Precision and Compatibility

• Compatible with Atlas 4200 inline six engines
• Supports LS manual and automatic transmissions
• Maintains proper drivetrain alignment and engagement
• CNC machined billet construction for strength and accuracy
• Designed for high horsepower and performance applications

Included Components

• Billet bellhousing adapter plate
• Inner crank adapter retaining factory starter ring gear
• Outer crank adapter with LS bolt pattern
• Starter spacer
• Complete hardware kit
• Optional lower adapter kit available for full bellhousing coverage

Transmission Compatibility

• 4L60E and 4L80E
• TH350 and TH400
• Powerglide
• T56 and TR6060
• AR5
• CD009 and similar LS pattern transmissions

Fitment and Compatibility

• Engine GM Atlas 4200 4.2 inline six
• Designed for LS transmission integration across multiple platforms

What You Will Need

• Atlas 4200 engine
• LS based transmission
• LS compatible clutch or torque converter setup
• GM LS bellhousing if required by transmission
• Factory Atlas starter

Built for Reliable Real World Performance

This adapter system delivers a complete engineered solution for Atlas swaps allowing builders to run LS transmissions with proper alignment strength and durability. It is ideal for turbo Atlas builds off road vehicles and unique inline six performance projects.