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1955-1957 Chevy LS Conversion Kit


1955-1957 Chevy LS Conversion Kit
Purchase 1955-1957 Chevy LS Conversion Kit
  • 1955-1957 Chevy LS Conversion Kit

  • $529.00

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1955-57 Tri-Five Chevy LS Swap Kit by MuscleRods

Precision engineered mounts and alignment brackets ensure correct drivetrain angle to eliminate unwanted vibrations and fitment headaches on 1955-57 non-convertible Tri-Five Chevys. The MuscleRods kit delivers plug and play support for T56, 4L60E and 4L80E transmissions without transmission tunnel modifications, while offering high clearance or optional LH8 oil pan configurations and rugged USA construction for dependable performance.

Complete MuscleRods LS Engine Swap Kit for Tri-Five Chevy

When installing an LS power plant into a Tri-Five Chevy, the 1955 through 1957 Chevy LS Conversion Kit tackles engine placement and driveline angle challenges in classic two-door Chevrolet models. Engineered by MuscleRods with precision frame mounts, engine mounts and a sturdy transmission crossmember, the kit accepts T56, 4L60E and 4L80E transmissions without altering the transmission tunnel. All components are made in the USA and configured to hold the correct driveline angle for a vibration free ride. Options for a high clearance oil pan or the LH8 design result in a hassle free installation that gets your build on the road fast.

Maintaining Precise Driveline Angle for Vibration-Free Operation

Achieving the correct driveline angle is critical when fitting an LS engine into a Tri-Five Chevy. The kit positions the engine and transmission at the factory recommended angle to minimize unwanted vibrations. By aligning the transmission output shaft with the rear axle pinion, the design ensures smooth power delivery under load. This alignment reduces stress on universal joints and extends the service life of related components. The result is a more comfortable ride and a lower likelihood of drivetrain noise or wear.

Comprehensive Compatibility with LS Engine Platforms and Transmissions

This conversion package supports a wide range of Gen III and Gen IV LS engines, including LS1, LS2 and LS3 variants, without requiring frame alterations. It accepts T56, 4L60E and 4L80E transmissions directly, so you avoid any modifications to the transmission tunnel. For applications that demand extra oil pan clearance, the kit works seamlessly with the LH8 GM oil pan and a low profile intake manifold to clear the stock hood opening. This versatility lets builders retain classic exterior lines while integrating modern powertrain technology.

American-Made Mounting Components for Robust Support

Every part in this conversion kit is manufactured in the United States to exacting standards, reflecting a dedication to quality and consistency. Precision frame brackets and engine mounts are formed from heavy-gauge steel to withstand the torque output of contemporary LS engines. A sturdy transmission crossmember paired with a polyurethane mount pack ensures reliable support under heavy acceleration. All necessary hardware-bolts, spacers and brackets-is included to streamline assembly and guarantee each mounting point meets the designed tolerances.

Count on MuscleRods for precise fitment and lasting support. To access a not an add on but a more robust kit where you can select your own parts to better suit your needs see our Complete LS Swap Kits - LS Kit Builder.

Specifications

  • SKU: LSX15
  • Swap Engine: LS
  • Body Type: Tri-Five Chevy
  • Brand: Muscle Rods
  • Compatible Engine Models: Most Gen III/IV LS Engines (e.g., LS1, LS2, LS3, 5.3L, 6.0L) when used with BRP/Muscle Rods LH8 GM Oil Pan, and appropriate low-profile intake for Tri-Five Chevy hood clearance. Excludes convertibles.
  • Compatible Transmissions: 4L60E, 4L80E (without tunnel modifications); Other transmission types may require adjustments.
  • What's Included:
    • (2) Motor Mounts
    • (2) Frame Brackets
    • (1) Transmission Crossmember
    • (2) Transmission Crossmber Brackets
    • (1) Polyurethane Transmission Mount and Spacers
    • (1) Installation Bolt Pack

Key Features

  • Perfect fit for 1955-1957 Chevrolet non-convertible models
  • Maintains correct drivetrain angle to prevent unwanted vibrations
  • Plug-and-play installation with T56, 4L60E, and 4L80E transmissions
  • Eliminates the need for transmission tunnel modifications
  • Compatible with high-clearance oil pan and optional LH8 pan
  • Proudly made in the USA

Benefits

  • Eliminates fitment issues on 1955-57 Chevy non-convertibles
  • Ensures smooth driving by preventing unwanted drivetrain vibrations
  • Speeds up installation with plug-and-play support for T56, 4L60E, and 4L80E
  • Avoids transmission tunnel modifications for hassle-free setup
  • Offers flexibility with high-clearance or optional LH8 oil pans
  • Delivers reliable performance through USA-made construction

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