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1977-1990 B-Body LT Conversion Kit


1977-1990 B-Body LT Conversion Kit
Purchase 1977-1990 B-Body LT Conversion Kit
  • 1977-1990 B-Body LT Conversion Kit

  • $589.00

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1977-1990 Chevy Caprice and Impala LT Engine Swap Solution by MuscleRods

High-strength steel mounts form the backbone of the 1977-1990 B-Body LT Conversion Kit, delivering precise alignment and reduced vibrations for your Caprice or Impala. Every kit includes all hardware for straightforward integration across multiple transmissions, preserves factory ground clearance and appearance, and comes crafted in the USA by MuscleRods for lasting reliability.

Complete MuscleRods LT Engine Swap Kit for 1977-1990 Chevy B-Body Caprice/Impala

Swapping an LT engine into a classic Chevy B-Body often becomes a juggling act of mismatched brackets and makeshift mounts but the 1977-1990 B-Body LT Conversion Kit simplifies the process from start to finish. This complete package delivers engine mounts and frame brackets that fit Chevrolet Caprice and Impala models and preserve factory stance while ensuring proper drivetrain angle with minimal vibration. Engineers at MuscleRods built every component in the USA and confirmed compatibility with 4L60E and 4L80E transmissions so no tunnel modification is required.

Precision Fit for 1977 through 1990 Chevy B Body Frames

This conversion kit's brackets and mounts align exactly with the original Caprice and Impala chassis points, preserving factory ground clearance and exterior appearance. By matching the stock mounting geometry, it removes any need for trial-and-error welding or improvised adapters. Installers benefit from predictable hole locations and consistent fit, reducing overall labor time. The result is a seamless marriage of modern LT power and classic Chevrolet styling.

Maintaining Optimal Drivetrain Geometry

Correct drivetrain angle is essential to minimize vibration and maximize transmission life. This kit positions the engine and transmission at the factory-intended angle relative to the driveshaft, delivering a smoother ride and lowering stress on universal joints. Energy Suspension polyurethane bushings absorb road shocks without allowing unwanted movement, so NVH levels stay in check. Drivers enjoy refined comfort without sacrificing the engine's performance potential.

Plug and Play Transmission Integration

Designed for direct compatibility with 4L60E and 4L80E transmissions, this system keeps the stock tunnel untouched. A purpose-built crossmember and mount secure the transmission in the original footprint, preserving the floorpan's structure and factory heat shields. This straightforward approach removes the complexity of cutting or hammering sheet metal, shaving hours off installation. Enthusiasts can upgrade to modern automatics while retaining the cabin's factory integrity.

Crafted in the USA for Durable Reliability

Every bracket, mount and crossmember is laser-cut and formed in the United States from heavy-gauge steel, then assembled with Grade 8 fasteners for maximum clamping strength. These materials resist fatigue and corrosion through years of highway driving or spirited outings. Solid polyurethane bushings add resilience under load and rebound to maintain tight clearances. Domestic production ensures strict quality checks and fast fulfillment of replacement parts if needed.

Count on MuscleRods for precise engineering and consistent fit. For a more robust kit that lets you select parts to suit your build see our Complete LT Swap Kits - LT Kit Builder.

Fitment

  • 1977-1990 Chevy Caprice
  • 1977-1990 Chevy Impala

Specifications

  • SKU: LTX21
  • Swap Engine: LT
  • Body Type: B-Body
  • Brand: Muscle Rods
  • Compatible Engine Models: Gen V LT Engines (e.g., LT1, LT4, L83, L86) when used with a Moroso Cast Aluminum LT Oil Pan Kit, designed for LT swaps and appropriate intake for B-Body hood clearance.
  • Compatible Transmissions: 4L60E, 4L80E (without tunnel modifications); Other transmission types may require additional adjustments.
  • What's Included:
    • Engine mounts
    • Frame mounts
    • Transmission crossmember
    • Transmission mount
    • Frame brackets

Key Features

  • Custom-fit for 1977-1990 Chevrolet Caprice and Impala
  • Straightforward integration with multiple transmission systems
  • Eliminates need to modify transmission tunnel
  • Maintains correct drivetrain angle for reduced vibrations
  • Preserves ground clearance and factory aesthetics
  • Proudly crafted in the USA for superior durability

Benefits

  • Ensures hassle-free installation and precise alignment
  • Allows flexible installation across various transmissions
  • Saves time and avoids complex vehicle modifications
  • Delivers smoother ride with minimized drivetrain vibration
  • Keeps original stance and vehicle appearance intact
  • Provides reliable, long-lasting performance with quality craftsmanship

This Item Assigned to Category and Also Fits:

Description

Complete MuscleRods LT Engine Swap Kit for 1977-1990 Chevy B-Body Caprice/Impala

Swapping an LT engine into a classic Chevy B-Body often becomes a juggling act of mismatched brackets and makeshift mounts but the 1977-1990 B-Body LT Conversion Kit simplifies the process from start to finish. This complete package delivers engine mounts and frame brackets that fit Chevrolet Caprice and Impala models and preserve factory stance while ensuring proper drivetrain angle with minimal vibration. Engineers at MuscleRods built every component in the USA and confirmed compatibility with 4L60E and 4L80E transmissions so no tunnel modification is required.

Precision Fit for 1977 through 1990 Chevy B Body Frames

This conversion kit's brackets and mounts align exactly with the original Caprice and Impala chassis points, preserving factory ground clearance and exterior appearance. By matching the stock mounting geometry, it removes any need for trial-and-error welding or improvised adapters. Installers benefit from predictable hole locations and consistent fit, reducing overall labor time. The result is a seamless marriage of modern LT power and classic Chevrolet styling.

Maintaining Optimal Drivetrain Geometry

Correct drivetrain angle is essential to minimize vibration and maximize transmission life. This kit positions the engine and transmission at the factory-intended angle relative to the driveshaft, delivering a smoother ride and lowering stress on universal joints. Energy Suspension polyurethane bushings absorb road shocks without allowing unwanted movement, so NVH levels stay in check. Drivers enjoy refined comfort without sacrificing the engine's performance potential.

Plug and Play Transmission Integration

Designed for direct compatibility with 4L60E and 4L80E transmissions, this system keeps the stock tunnel untouched. A purpose-built crossmember and mount secure the transmission in the original footprint, preserving the floorpan's structure and factory heat shields. This straightforward approach removes the complexity of cutting or hammering sheet metal, shaving hours off installation. Enthusiasts can upgrade to modern automatics while retaining the cabin's factory integrity.

Crafted in the USA for Durable Reliability

Every bracket, mount and crossmember is laser-cut and formed in the United States from heavy-gauge steel, then assembled with Grade 8 fasteners for maximum clamping strength. These materials resist fatigue and corrosion through years of highway driving or spirited outings. Solid polyurethane bushings add resilience under load and rebound to maintain tight clearances. Domestic production ensures strict quality checks and fast fulfillment of replacement parts if needed.

Count on MuscleRods for precise engineering and consistent fit. For a more robust kit that lets you select parts to suit your build see our Complete LT Swap Kits - LT Kit Builder.

Fitment

Fitment

  • 1977-1990 Chevy Caprice
  • 1977-1990 Chevy Impala
  • Compatible Engine Models: Gen V LT Engines (e.g., LT1, LT4, L83, L86) when used with a Moroso Cast Aluminum LT Oil Pan Kit, designed for LT swaps and appropriate intake for B-Body hood clearance.
  • Compatible Transmissions: 4L60E, 4L80E (without tunnel modifications); Other transmission types may require additional adjustments.
Features
  • Custom-fit for 1977-1990 Chevrolet Caprice and Impala
  • Straightforward integration with multiple transmission systems
  • Eliminates need to modify transmission tunnel
  • Maintains correct drivetrain angle for reduced vibrations
  • Preserves ground clearance and factory aesthetics
  • Proudly crafted in the USA for superior durability
Benefits
  • Ensures hassle-free installation and precise alignment
  • Allows flexible installation across various transmissions
  • Saves time and avoids complex vehicle modifications
  • Delivers smoother ride with minimized drivetrain vibration
  • Keeps original stance and vehicle appearance intact
  • Provides reliable, long-lasting performance with quality craftsmanship
What's Included
  • Engine mounts
  • Frame mounts
  • Transmission crossmember
  • Transmission mount
  • Frame brackets
Specifications
  • SKU: LTX21
  • Brand: Muscle Rods
  • Swap Engine: LT
  • Body Type: B-Body