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1973-1977 A-Body LT Conversion Kit


1973-1977 A-Body LT Conversion Kit
Purchase 1973-1977 A-Body LT Conversion Kit
  • 1973-1977 A-Body LT Conversion Kit

  • $589.00

    SKU: LTX19

  • Select Transmission:  

1973-1977 A-Body LT Swap Power by MuscleRods

Seamless LT integration into your 1973-1977 A-Body chassis is made possible by precision engineered mounts and a reinforced crossmember, cutting swap time and alignment adjustments to a minimum. Proudly made in the USA by MuscleRods, this engine swap kit preserves classic styling while delivering boosted horsepower, sharper handling and unwavering structural support for demanding driving conditions.

MuscleRods LT Engine Swap Kit for 1973-1977 GM A-Body Vehicles

Dropping a modern LT powerplant into a 1973-1977 A-Body chassis often leads to clearance conflicts and misalignment issues. The 1973-1977 A-Body LT Conversion Kit addresses these problems with precisely engineered mounts and frame brackets that match factory mounting points. Each CNC machined component preserves original suspension geometry and driveline angles for balanced weight distribution and consistent handling. By combining American made hardware with a reinforced crossmember and integrated transmission mount, MuscleRods reduces guesswork and cuts installation time.

Precision CNC Machined Engine Mounts for LT Integration

Each motor mount and frame bracket is CNC machined to match factory mounting points on 1973-1977 A-Body frames. This exacting fitment guarantees the LT engine sits perfectly within the engine bay, preserving original suspension geometry and driveline angles. Installers avoid time-consuming trial and error, as no additional shims or modifications are needed to achieve correct alignment. The result is a seamless blend of vintage chassis balance with the increased torque and horsepower of modern LT powerplants.

Heavy Gauge Steel Crossmember and Brackets for Structural Support

The kit's reinforced crossmember and heavy gauge steel frame brackets are engineered to handle the torque output of Gen V LT engines without chassis flex. This robust structure maintains frame integrity under hard launches and aggressive cornering, ensuring consistent load distribution across classic A-Body rails. Domestic fabrication under stringent quality standards means each component delivers reliable performance for daily driving or track use. The integrated design also retains the vehicle's factory rail spacing and bumper mounts.

Polyurethane Transmission Mount for Vibration Isolation

A dedicated polyurethane transmission mount with precision spacers isolates drivetrain vibrations from the chassis more effectively than standard rubber mounts. This component reduces noise transfer into the cabin and extends mount life under continuous load. It aligns directly with common GM transmissions such as the 4L60E and 4L80E without requiring major tunnel modifications. The design also accommodates LT1, LT4, L83 and L86 engines when paired with the recommended oil pan solution for proper hood clearance.

Complete Hardware Pack for Streamlined Installation

The conversion kit arrives with all necessary components, including motor mounts, frame brackets, transmission crossmember, outer brackets and a full hardware pack. By providing every fastener and spacer, it eliminates the need to source additional parts and cuts installation time dramatically. This turnkey approach allows professional installers and enthusiasts alike to complete the swap in a single session with standard tools. Every bolt and washer is American made, ensuring consistent quality and fitment throughout the project.

Count on MuscleRods for reliable installation. To customize your build select our Complete LT Swap Kits - LT Kit Builder which allows you to choose individual components to suit your needs.

Fitment

  • 1973-1977 Chevy Chevelle
  • 1973-1977 Chevy Monte Carlo
  • 1973-1976 Chevy Laguna
  • 1973-1977 Chevy El Camino
  • 1973-1977 GMC Sprint
  • 1973-1977 Buick Regal
  • 1973-1977 Oldsmobile Cutlass
  • 1973-1977 Pontiac Grand Am
  • 1973-1977 Pontiac Grand Prix

Specifications

  • SKU: LTX19
  • Swap Engine: LT
  • Body Type: A-Body
  • Brand: Muscle Rods
  • Compatible Engine Models: Gen V LT Engines (e.g., LT1, LT4, L83, L86) when used with our Cast Aluminum LT Oil Pan Kit and appropriate intake for A-Body hood clearance.
  • Compatible Transmissions: 4L60E, 4L80E, (without tunnel modifications); Minor adjustments may be necessary for other transmission types."
  • What's Included:
    • (2) Motor Mounts
    • (2) Frame Brackets
    • (1) Transmission Crossmember
    • (2) Crossmember Outer Brackets
    • (1) Polyurethane Transmission Mount and Spacers
    • (1) Installation Hardware Pack

Key Features

  • Seamless integration with modern LT engine series
  • Enhances power, handling, and driving dynamics
  • Precise fitment for 1973-1977 A-Body chassis
  • Merges classic aesthetics with modern engineering
  • Unparalleled structural integrity and performance
  • Proudly Made in the USA by Muscle Rods

Benefits

  • Simplifies engine swap process for faster, hassle-free LT integration
  • Delivers boosted horsepower and sharper handling on every drive
  • Guarantees precise chassis alignment to minimize installation adjustments
  • Preserves vintage styling while introducing modern performance engineering
  • Provides rock-solid structural support for demanding driving conditions
  • Ensures superior craftsmanship and durability with USA-made components

This Item Assigned to Category and Also Fits:

Description

MuscleRods LT Engine Swap Kit for 1973-1977 GM A-Body Vehicles

Dropping a modern LT powerplant into a 1973-1977 A-Body chassis often leads to clearance conflicts and misalignment issues. The 1973-1977 A-Body LT Conversion Kit addresses these problems with precisely engineered mounts and frame brackets that match factory mounting points. Each CNC machined component preserves original suspension geometry and driveline angles for balanced weight distribution and consistent handling. By combining American made hardware with a reinforced crossmember and integrated transmission mount, MuscleRods reduces guesswork and cuts installation time.

Precision CNC Machined Engine Mounts for LT Integration

Each motor mount and frame bracket is CNC machined to match factory mounting points on 1973-1977 A-Body frames. This exacting fitment guarantees the LT engine sits perfectly within the engine bay, preserving original suspension geometry and driveline angles. Installers avoid time-consuming trial and error, as no additional shims or modifications are needed to achieve correct alignment. The result is a seamless blend of vintage chassis balance with the increased torque and horsepower of modern LT powerplants.

Heavy Gauge Steel Crossmember and Brackets for Structural Support

The kit's reinforced crossmember and heavy gauge steel frame brackets are engineered to handle the torque output of Gen V LT engines without chassis flex. This robust structure maintains frame integrity under hard launches and aggressive cornering, ensuring consistent load distribution across classic A-Body rails. Domestic fabrication under stringent quality standards means each component delivers reliable performance for daily driving or track use. The integrated design also retains the vehicle's factory rail spacing and bumper mounts.

Polyurethane Transmission Mount for Vibration Isolation

A dedicated polyurethane transmission mount with precision spacers isolates drivetrain vibrations from the chassis more effectively than standard rubber mounts. This component reduces noise transfer into the cabin and extends mount life under continuous load. It aligns directly with common GM transmissions such as the 4L60E and 4L80E without requiring major tunnel modifications. The design also accommodates LT1, LT4, L83 and L86 engines when paired with the recommended oil pan solution for proper hood clearance.

Complete Hardware Pack for Streamlined Installation

The conversion kit arrives with all necessary components, including motor mounts, frame brackets, transmission crossmember, outer brackets and a full hardware pack. By providing every fastener and spacer, it eliminates the need to source additional parts and cuts installation time dramatically. This turnkey approach allows professional installers and enthusiasts alike to complete the swap in a single session with standard tools. Every bolt and washer is American made, ensuring consistent quality and fitment throughout the project.

Count on MuscleRods for reliable installation. To customize your build select our Complete LT Swap Kits - LT Kit Builder which allows you to choose individual components to suit your needs.

Fitment

Fitment

  • 1973-1977 Chevy Chevelle
  • 1973-1977 Chevy Monte Carlo
  • 1973-1976 Chevy Laguna
  • 1973-1977 Chevy El Camino
  • 1973-1977 GMC Sprint
  • 1973-1977 Buick Regal
  • 1973-1977 Oldsmobile Cutlass
  • 1973-1977 Pontiac Grand Am
  • 1973-1977 Pontiac Grand Prix
  • Compatible Engine Models: Gen V LT Engines (e.g., LT1, LT4, L83, L86) when used with our Cast Aluminum LT Oil Pan Kit and appropriate intake for A-Body hood clearance.
  • Compatible Transmissions: 4L60E, 4L80E, (without tunnel modifications); Minor adjustments may be necessary for other transmission types."
Features
  • Seamless integration with modern LT engine series
  • Enhances power, handling, and driving dynamics
  • Precise fitment for 1973-1977 A-Body chassis
  • Merges classic aesthetics with modern engineering
  • Unparalleled structural integrity and performance
  • Proudly Made in the USA by Muscle Rods
Benefits
  • Simplifies engine swap process for faster, hassle-free LT integration
  • Delivers boosted horsepower and sharper handling on every drive
  • Guarantees precise chassis alignment to minimize installation adjustments
  • Preserves vintage styling while introducing modern performance engineering
  • Provides rock-solid structural support for demanding driving conditions
  • Ensures superior craftsmanship and durability with USA-made components
What's Included
  • (2) Motor Mounts
  • (2) Frame Brackets
  • (1) Transmission Crossmember
  • (2) Crossmember Outer Brackets
  • (1) Polyurethane Transmission Mount and Spacers
  • (1) Installation Hardware Pack
Specifications
  • SKU: LTX19
  • Brand: Muscle Rods
  • Swap Engine: LT
  • Body Type: A-Body