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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

    SKU: LSX15

  • Select Transmission:  

MuscleRods LS Foundation for 1955-57 Tri-Five Chevy

Engineered to eliminate fitment headaches on Tri Five Chevy models from 1955 through 1957, the MuscleRods 1955 through 1957 Chevy LS Conversion Kit uses precision mounts and alignment brackets to maintain correct drivetrain angle and prevent unwanted vibrations. Installers benefit from plug and play support for T56, 4L60E or 4L80E transmissions without modifying the tunnel, along with flexible oil pan clearance choices and robust steel construction made in the USA for dependable on road performance.

Complete MuscleRods LS Engine Swap Kit for 1955-1957 Tri-Five Chevy

For builders installing an LS V8 into a two door Chevy from 1955 through 1957, the 1955-1957 Chevy LS Conversion Kit solves the toughest fitment challenges by positioning the engine and transmission at the proper angle. Engineered by MuscleRods with precision frame mounts and a robust crossmember, this kit accepts T56, 4L60E and 4L80E transmissions without altering the tunnel. This arrangement preserves drivetrain angle to minimize unwanted vibrations that undermine a smooth ride. All brackets, mounts and hardware are made in the USA to deliver consistent strength and a straightforward installation.

Maintaining Drivetrain Alignment for Vibration Control

The conversion kit secures the LS engine and selected transmission at the precise angle recommended for 1955 through 1957 Chevy frames, eliminating common driveline vibrations. By aligning the output shaft of a T56, 4L60E or 4L80E transmission with the rear axle pinion, it enables smooth torque delivery under acceleration. This careful geometry reduces loads on universal joints and other driveline parts, extending their service life. The outcome is a quiet, vibration free ride that preserves classic driving comfort under modern power levels.

Plug and Play Fitment for T56 4L60E and 4L80E Transmissions

Designed for direct bolt in installation, this conversion kit accepts T56, 4L60E and 4L80E transmissions without any alteration to the transmission tunnel floor. All necessary brackets, bolts, spacers and mount hardware are included to guide assembly with factory frame rails. This arrangement saves hours of fabrication work and ensures a consistent fit across multiple engine and transmission options. Even first time installers can complete the swap quickly and reliably using the provided components.

High Clearance Oil Pan Compatibility for Hood Fit

In applications where oil capacity and clearance are critical the kit is ready to work with the GM LH8 oil pan and a matching low height intake manifold. Its frame rails and crossmember geometry clear deeper pans while preserving the stock hood line on a 1955 through 1957 Chevy. Builders can run a larger sump to support extended driving or track use without trimming sheet metal. This flexibility ensures both form and function are maintained in classic bodywork.

Robust USA Made Mounting Components for Long Term Support

All frame brackets, engine mounts and the transmission crossmember are manufactured in the United States to exacting standards using heavy gauge steel. This construction withstands the higher torque output of modern LS engines while maintaining chassis integrity. A polyurethane mount pack at the transmission crossmember isolates vibrations and resists degradation from oil and heat. Every bracket and spacer is laser cut or stamped to precise tolerances, ensuring the swap remains secure under all driving conditions.

Count on MuscleRods for a precise and straightforward foundation. For a more robust kit where you can select parts to 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

This Item Assigned to Category and Also Fits:

Description

Complete MuscleRods LS Engine Swap Kit for 1955-1957 Tri-Five Chevy

For builders installing an LS V8 into a two door Chevy from 1955 through 1957, the 1955-1957 Chevy LS Conversion Kit solves the toughest fitment challenges by positioning the engine and transmission at the proper angle. Engineered by MuscleRods with precision frame mounts and a robust crossmember, this kit accepts T56, 4L60E and 4L80E transmissions without altering the tunnel. This arrangement preserves drivetrain angle to minimize unwanted vibrations that undermine a smooth ride. All brackets, mounts and hardware are made in the USA to deliver consistent strength and a straightforward installation.

Maintaining Drivetrain Alignment for Vibration Control

The conversion kit secures the LS engine and selected transmission at the precise angle recommended for 1955 through 1957 Chevy frames, eliminating common driveline vibrations. By aligning the output shaft of a T56, 4L60E or 4L80E transmission with the rear axle pinion, it enables smooth torque delivery under acceleration. This careful geometry reduces loads on universal joints and other driveline parts, extending their service life. The outcome is a quiet, vibration free ride that preserves classic driving comfort under modern power levels.

Plug and Play Fitment for T56 4L60E and 4L80E Transmissions

Designed for direct bolt in installation, this conversion kit accepts T56, 4L60E and 4L80E transmissions without any alteration to the transmission tunnel floor. All necessary brackets, bolts, spacers and mount hardware are included to guide assembly with factory frame rails. This arrangement saves hours of fabrication work and ensures a consistent fit across multiple engine and transmission options. Even first time installers can complete the swap quickly and reliably using the provided components.

High Clearance Oil Pan Compatibility for Hood Fit

In applications where oil capacity and clearance are critical the kit is ready to work with the GM LH8 oil pan and a matching low height intake manifold. Its frame rails and crossmember geometry clear deeper pans while preserving the stock hood line on a 1955 through 1957 Chevy. Builders can run a larger sump to support extended driving or track use without trimming sheet metal. This flexibility ensures both form and function are maintained in classic bodywork.

Robust USA Made Mounting Components for Long Term Support

All frame brackets, engine mounts and the transmission crossmember are manufactured in the United States to exacting standards using heavy gauge steel. This construction withstands the higher torque output of modern LS engines while maintaining chassis integrity. A polyurethane mount pack at the transmission crossmember isolates vibrations and resists degradation from oil and heat. Every bracket and spacer is laser cut or stamped to precise tolerances, ensuring the swap remains secure under all driving conditions.

Count on MuscleRods for a precise and straightforward foundation. For a more robust kit where you can select parts to suit your needs see our Complete LS Swap Kits - LS Kit Builder.

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
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
Specifications
  • SKU: LSX15
  • Brand: Muscle Rods
  • Swap Engine: LS
  • Body Type: Tri-Five Chevy