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1978-1988 G-Body LS Conversion Kit


1978-1988 G-Body LS Conversion Kit
Purchase 1978-1988 G-Body LS Conversion Kit
  • 1978-1988 G-Body LS Conversion Kit

  • $529.00

    SKU: LSX6

  • Select Transmission:  

Zero-Vibration LS Swap Alignment for 1978-1988 G-Body MuscleRods

Achieve smooth power delivery and zero drivetrain vibration in your 1978-1988 G-Body LS swap with precision-engineered mounts that preserve optimal engine angle. Bolted directly to stock crossmember locations, the MuscleRods kit fits T56, 4L60E, 4L80E and 6L80E transmissions without altering the tunnel and supports both high clearance and LH8 pans for robust undercarriage protection.

Complete MuscleRods LS Engine Swap Kit for 1978-1988 G-Body (Monte Carlo/Regal/Cutlass)

Installing an LS powerplant into a 1978-1988 G-Body like a Monte Carlo, Regal or Cutlass can present fitment challenges with mounts and tunnel clearance, and the 1978-1988 G-Body LS Conversion Kit solves these issues with a full set of precision formed brackets and crossmembers. This kit maintains the correct drivetrain angle to eliminate vibration and supports T56, 4L60E, 4L80E and 6L80E transmissions without modifying the tunnel. Owners also benefit from options for a high clearance or LH8 oil pan setup, preserving undercarriage space for road obstacles. Every component is made in the USA and arrives with detailed instructions to guide a clean, efficient installation.

Precision Drivetrain Angle Maintenance

The kit's precision formed engine and transmission brackets hold the LS engine at the exact angle needed to align with the transmission output. By maintaining this alignment, the system virtually eliminates vibration under load and reduces stress on universal joints and transmission input shafts. This careful geometry translates into smoother power delivery and less wear on drivetrain components over time. Installers benefit from a setup that delivers refined highway cruising and consistent performance without custom modifications to the factory chassis.

Flexible Transmission and Oil Pan Support

This conversion framework adapts seamlessly to T56, 4L60E, 4L80E and 6L80E transmissions, thanks to precision-drilled bolt patterns and purpose-built crossmember brackets. It also accommodates both high clearance and LH8 oil pans, preserving the factory tunnel shape and undercarriage space. By eliminating the need to cut or reshape the transmission tunnel, the design streamlines installation and protects ground clearance on uneven roads. Whether you choose a deep sump to guard against rocks or the shallow LH8 for garage clearance, the kit provides the mounting geometry to fit without alteration.

American Made Construction for Lasting Reliability

Every bracket, mount and hardware component is proudly formed and welded in the USA to precise tolerances. The pair of motor mounts and the integrated crossmember use robust steel construction for maximum rigidity, while the included polyurethane transmission mount and spacers isolate vibration without sacrificing support. A driver-side Z support bracket adds lateral stability, distributing torque loads efficiently into the chassis. With a complete hardware pack and clear instructions, installers achieve a rock solid foundation that holds up under repeated hard launches and daily driving alike.

Count on MuscleRods for precise fit and lasting reliability. For a more robust kit where you can build this same kit but this is a customizable kit where you can select your own parts to better suit your needs, see our Complete LS Swap Kits - LS Kit Builder.

Fitment

  • Monte Carlo 1978-1988
  • Regal 1978-1987
  • Grand National 1982-1987
  • Cutlass 1978-1987
  • Grand Prix 1978-1987
  • Malibu 1978-1983
  • El Camino 1978-1987
  • Caballero 1978-1987

Specifications

  • SKU: LSX6
  • Swap Engine: LS
  • Body Type: G-Body
  • Brand: Muscle Rods
  • Compatible Engine Models: Gen III/IV LS Engines (e.g., LS1, LS2, LS3, 5.3L, 6.0L) when used with a compatible High Clearance oil pan or Cast Aluminum Retro Style oil pan pan and appropriate intake for G-Body hood clearance. (Kit is for LS engines only).
  • Compatible Transmissions: T56, 4L60E, 4L80E, 6L80E (no modifications needed).
  • What's Included:
    • (2) Motor Mounts
    • (2) Frame Brackets
    • (1) Transmission Crossmember
    • (2) Crossmember Brackets
    • (1) Driver-Side Support Z Bracket
    • (1) Polyurethane Transmission Mount and Spacers
    • (1) Installation Hardware Pack

Key Features

  • Maintains correct drivetrain angle for vibration-free performance
  • Compatible with T56, 4L60E, 4L80E, and 6L80E transmissions
  • Installation without transmission tunnel modifications
  • Supports High Clearance oil pan for optimal undercarriage space
  • Compatible with LH8 oil pan for customizable ground clearance
  • Designed and manufactured in the USA

Benefits

  • Experience smoother driving with zero drivetrain vibrations
  • Fit multiple transmission options for flexible swap compatibility
  • Install without tunnel modifications for faster, cleaner setup
  • Use high clearance pan to protect undercarriage on rough roads
  • Choose LH8 pan for tailored ground clearance
  • Trust American-made engineering for reliable, durable performance

This Item Assigned to Category and Also Fits:

Description

Complete MuscleRods LS Engine Swap Kit for 1978-1988 G-Body (Monte Carlo/Regal/Cutlass)

Installing an LS powerplant into a 1978-1988 G-Body like a Monte Carlo, Regal or Cutlass can present fitment challenges with mounts and tunnel clearance, and the 1978-1988 G-Body LS Conversion Kit solves these issues with a full set of precision formed brackets and crossmembers. This kit maintains the correct drivetrain angle to eliminate vibration and supports T56, 4L60E, 4L80E and 6L80E transmissions without modifying the tunnel. Owners also benefit from options for a high clearance or LH8 oil pan setup, preserving undercarriage space for road obstacles. Every component is made in the USA and arrives with detailed instructions to guide a clean, efficient installation.

Precision Drivetrain Angle Maintenance

The kit's precision formed engine and transmission brackets hold the LS engine at the exact angle needed to align with the transmission output. By maintaining this alignment, the system virtually eliminates vibration under load and reduces stress on universal joints and transmission input shafts. This careful geometry translates into smoother power delivery and less wear on drivetrain components over time. Installers benefit from a setup that delivers refined highway cruising and consistent performance without custom modifications to the factory chassis.

Flexible Transmission and Oil Pan Support

This conversion framework adapts seamlessly to T56, 4L60E, 4L80E and 6L80E transmissions, thanks to precision-drilled bolt patterns and purpose-built crossmember brackets. It also accommodates both high clearance and LH8 oil pans, preserving the factory tunnel shape and undercarriage space. By eliminating the need to cut or reshape the transmission tunnel, the design streamlines installation and protects ground clearance on uneven roads. Whether you choose a deep sump to guard against rocks or the shallow LH8 for garage clearance, the kit provides the mounting geometry to fit without alteration.

American Made Construction for Lasting Reliability

Every bracket, mount and hardware component is proudly formed and welded in the USA to precise tolerances. The pair of motor mounts and the integrated crossmember use robust steel construction for maximum rigidity, while the included polyurethane transmission mount and spacers isolate vibration without sacrificing support. A driver-side Z support bracket adds lateral stability, distributing torque loads efficiently into the chassis. With a complete hardware pack and clear instructions, installers achieve a rock solid foundation that holds up under repeated hard launches and daily driving alike.

Count on MuscleRods for precise fit and lasting reliability. For a more robust kit where you can build this same kit but this is a customizable kit where you can select your own parts to better suit your needs, see our Complete LS Swap Kits - LS Kit Builder.

Fitment

Fitment

  • Monte Carlo 1978-1988
  • Regal 1978-1987
  • Grand National 1982-1987
  • Cutlass 1978-1987
  • Grand Prix 1978-1987
  • Malibu 1978-1983
  • El Camino 1978-1987
  • Caballero 1978-1987
  • Compatible Transmissions: T56, 4L60E, 4L80E, 6L80E (no modifications needed).
Features
  • Maintains correct drivetrain angle for vibration-free performance
  • Compatible with T56, 4L60E, 4L80E, and 6L80E transmissions
  • Installation without transmission tunnel modifications
  • Supports High Clearance oil pan for optimal undercarriage space
  • Compatible with LH8 oil pan for customizable ground clearance
  • Designed and manufactured in the USA
Benefits
  • Experience smoother driving with zero drivetrain vibrations
  • Fit multiple transmission options for flexible swap compatibility
  • Install without tunnel modifications for faster, cleaner setup
  • Use high clearance pan to protect undercarriage on rough roads
  • Choose LH8 pan for tailored ground clearance
  • Trust American-made engineering for reliable, durable performance
What's Included
  • (2) Motor Mounts
  • (2) Frame Brackets
  • (1) Transmission Crossmember
  • (2) Crossmember Brackets
  • (1) Driver-Side Support Z Bracket
  • (1) Polyurethane Transmission Mount and Spacers
  • (1) Installation Hardware Pack
Specifications
  • SKU: LSX6
  • Brand: Muscle Rods
  • Swap Engine: LS
  • Body Type: G-Body