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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:  

MuscleRods Precision LS Mounts for 78-88 G-Body

Optimized drivetrain alignment delivers vibration free performance in your 1978 to 1988 G Body LS swap, while precision mounts maintain engine angle and support T56 and 4L60E to 6L80E transmissions without modifying the tunnel. All American made components bolt directly to stock crossmembers for a faster, cleaner installation, and optional high clearance or LH8 pans safeguard the undercarriage while tailoring ground clearance. Trust MuscleRods engineering for lasting reliability.

MuscleRods LS Engine Swap Kit for G-Body 1978-1988 (Monte Carlo, El Camino, Grand Prix)

For enthusiasts swapping an LS motor into a classic G Body chassis, the 1978-1988 G Body LS Conversion Kit provides a precise foundation that holds the engine at factory tilt to eliminate driveline shimmy and undue stress on universal joints. Built by MuscleRods from American steel, the laser formed motor mounts and crossmember bolt directly to factory locations on Monte Carlo, Regal, Cutlass, El Camino and Grand Prix frames and accept T56, 4L60E, 4L80E or 6L80E transmissions without any tunnel cutting. Owners can choose a tall oil pan to protect the sump on rough roads or the LH8 shallow design to clear low garage ramps and speed bumps while maintaining near stock fluid capacity, delivering a drivetrain alignment solution that holds up to spirited runs and daily driving.

Precision Angle Control for Vibration Free Operation

The laser formed motor mounts in this LS conversion kit hold the engine at the exact pitch specified by G-Body engineers to eliminate driveline binding and deliver an operation free from vibrations. By matching the factory angle, cyclic stress on universal joints is greatly reduced, preventing premature wear and avoiding harsh feedback through the chassis. This precise alignment also ensures the transmission input shaft remains concentric with the motor's crank flange, promoting even torque transfer from low rpm launches to sustained highway cruising. Because these brackets bolt directly to the original frame rail bosses, installers preserve the integrity of the tunnel structure and maintain the vehicle's designed rigidity.

Transmission Versatility with Direct Factory Attachment

This kit accommodates T56, 4L60E, 4L80E and 6L80E transmissions without requiring any modifications to the tunnel or custom crossmember fabrication. Frame brackets are shaped to mate with existing GM mounting pads, enabling a bolt-in process that mirrors original installation methods. A polyurethane transmission mount and spacer block isolate residual engine movement, reducing noise and vibration in the cabin while extending the service life of shift linkages. By leveraging stock mounting points, builders save time during assembly and achieve a clean, factory-style fit that aligns every component for dependable performance.

Adjustable Oil Pan Profiles for Custom Ground Clearance

Two oil pan options allow fine tuning of undercarriage clearance to suit different driving conditions. The high clearance pan raises the sump profile to clear rough roads and aggressive speed ramps, safeguarding the oil reservoir from impact damage. For vehicles that must navigate low garage entrances or steep driveways, the LH8 shallow pan preserves nearly the same fluid capacity while minimizing depth below the crossmember. Both configurations install with standard hardware and align precisely with the crossmember brackets, so no trimming or custom spacers are required for a seamless fit.

Robust Steel Fabrication Engineered for Lasting Reliability

Every bracket, crossmember element and support arm in this conversion kit is formed from heavy gauge American steel, delivering the structural strength needed to withstand spirited driving and everyday loads. Controlled welding processes ensure each joint achieves full penetration and consistent mechanical properties, so stress concentrations are avoided and fatigue life is maximized. The driver-side Z shaped support bracket channels lateral forces directly into the chassis rails, enhancing stability during cornering maneuvers. With material traceability and production oversight in the USA, each component offers a dependable foundation for a hassle free LS swap.

Count on MuscleRods for a precise foundation for your LS swap. For a more robust kit that lets you select your own parts to 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

MuscleRods LS Engine Swap Kit for G-Body 1978-1988 (Monte Carlo, El Camino, Grand Prix)

For enthusiasts swapping an LS motor into a classic G Body chassis, the 1978-1988 G Body LS Conversion Kit provides a precise foundation that holds the engine at factory tilt to eliminate driveline shimmy and undue stress on universal joints. Built by MuscleRods from American steel, the laser formed motor mounts and crossmember bolt directly to factory locations on Monte Carlo, Regal, Cutlass, El Camino and Grand Prix frames and accept T56, 4L60E, 4L80E or 6L80E transmissions without any tunnel cutting. Owners can choose a tall oil pan to protect the sump on rough roads or the LH8 shallow design to clear low garage ramps and speed bumps while maintaining near stock fluid capacity, delivering a drivetrain alignment solution that holds up to spirited runs and daily driving.

Precision Angle Control for Vibration Free Operation

The laser formed motor mounts in this LS conversion kit hold the engine at the exact pitch specified by G-Body engineers to eliminate driveline binding and deliver an operation free from vibrations. By matching the factory angle, cyclic stress on universal joints is greatly reduced, preventing premature wear and avoiding harsh feedback through the chassis. This precise alignment also ensures the transmission input shaft remains concentric with the motor's crank flange, promoting even torque transfer from low rpm launches to sustained highway cruising. Because these brackets bolt directly to the original frame rail bosses, installers preserve the integrity of the tunnel structure and maintain the vehicle's designed rigidity.

Transmission Versatility with Direct Factory Attachment

This kit accommodates T56, 4L60E, 4L80E and 6L80E transmissions without requiring any modifications to the tunnel or custom crossmember fabrication. Frame brackets are shaped to mate with existing GM mounting pads, enabling a bolt-in process that mirrors original installation methods. A polyurethane transmission mount and spacer block isolate residual engine movement, reducing noise and vibration in the cabin while extending the service life of shift linkages. By leveraging stock mounting points, builders save time during assembly and achieve a clean, factory-style fit that aligns every component for dependable performance.

Adjustable Oil Pan Profiles for Custom Ground Clearance

Two oil pan options allow fine tuning of undercarriage clearance to suit different driving conditions. The high clearance pan raises the sump profile to clear rough roads and aggressive speed ramps, safeguarding the oil reservoir from impact damage. For vehicles that must navigate low garage entrances or steep driveways, the LH8 shallow pan preserves nearly the same fluid capacity while minimizing depth below the crossmember. Both configurations install with standard hardware and align precisely with the crossmember brackets, so no trimming or custom spacers are required for a seamless fit.

Robust Steel Fabrication Engineered for Lasting Reliability

Every bracket, crossmember element and support arm in this conversion kit is formed from heavy gauge American steel, delivering the structural strength needed to withstand spirited driving and everyday loads. Controlled welding processes ensure each joint achieves full penetration and consistent mechanical properties, so stress concentrations are avoided and fatigue life is maximized. The driver-side Z shaped support bracket channels lateral forces directly into the chassis rails, enhancing stability during cornering maneuvers. With material traceability and production oversight in the USA, each component offers a dependable foundation for a hassle free LS swap.

Count on MuscleRods for a precise foundation for your LS swap. For a more robust kit that lets you select your own parts to 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