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Cast Iron Exhaust Manifolds for LS Engines


Cast Iron Exhaust Manifolds for LS Engines
Purchase Cast Iron Exhaust Manifolds for LS Engines
  • Cast Iron Exhaust Manifolds for LS Engines

  • $299.00

    SKU: 000-6701-00

1953-1972 Corvette and 1978-1988 G-Body LS Intake Manifold

Delivering up to 500 horsepower for classic GM rigs, silicon moly ductile iron construction ensures long term durability and smooth airflow in LS engines. Precision cast for direct fit into mid 1950s through early 1970s Corvette and late 1970s through late 1980s G Body applications and available with an optional ceramic coating to resist corrosion and heat soak, it speeds installation and power gains without extra modifications.

Cast Iron LS Exhaust Manifolds for 1953-1998 GM Chassis

When you retrofit an LS powerplant into a 1953 to 1998 GM chassis, exhaust manifold clearance and heat endurance become critical concerns. These Cast Iron Exhaust Manifolds are cast from silicon and molybdenum enriched ductile iron to resist cracking under repeated high temperature cycles while maintaining a tight tuck layout that fits narrow frame rails. Complete with OEM style gaskets, bolts and flanges, they bolt straight on to Chevrolet Corvettes, G Body coupes and GM trucks without altering steering components.

Robust Ductile Iron Construction for Heat Resilience

Cast from a silicon and molybdenum enriched ductile iron alloy, these exhaust manifolds excel at resisting cracking and warping under the repeated high temperature cycles typical of LS engine swaps. The unique alloy composition maintains structural integrity even when subjected to sustained heat, ensuring the runners hold their shape and sealing surfaces remain precise. This inherent toughness allows the manifolds to withstand street driving and track sessions without fatigue. The natural cast finish also provides a solid base for optional surface treatments, extending service life in corrosive environments.

Tight Tuck Layout Optimizes Clearance and Flow

The closely packed runner configuration positions the manifold against the block to maximize space in narrow engine bays found in classic GM cars and trucks. By maintaining a compact design, the clearance between frame rails and steering components is preserved without sacrificing exhaust capacity. A smooth internal passage leads to a 2.25 inch outlet that sustains exhaust velocity, improving scavenging and reducing backpressure. This balance of fitment and flow translates into more responsive torque across the rpm range.

Comprehensive Hardware Kit Simplifies Installation

Each set includes precision matched welding flanges, OEM style gaskets, bolts, studs, and all necessary hardware to ensure a straight-forward installation. Providing every component eliminates the risk of mismatched parts and the need for multiple orders, which saves time during assembly. The supplied gaskets and bolt patterns mirror factory dimensions for a reliable seal and proper alignment. Installers benefit from the plug-and-play nature of the kit on popular platforms like Corvette, G-Body and GM trucks.

Enhanced Exhaust Flow Supporting High Output

Engineered to handle power levels up to 500 horsepower, these manifolds improve catalytic converter performance by delivering stable temperatures and consistent flow. The maintained exhaust velocity promotes faster light-off of catalysts, reducing warm-up time and aiding emissions control. With minimized backpressure, engines breathe more freely, boosting both peak output and low end torque. The result is a more responsive throttle feel and dependable operation in high output LS applications.

A reliable choice for precise fit and consistent exhaust flow in your LS retrofit.

Fitment

  • 1953-1982 Chevy Corvette
  • 1977-1995 Chevy G Series Van
  • 1955-1957 Chevy
  • 1978-1988 G-Body
  • 1963-1972 GM Trucks
  • 1973-1987 GM Trucks
  • 1988-1998 GM Trucks
  • 1964-1972 A-Body
  • 1977-1990 B-Body
  • 1970-1981 F-Body
  • 1958-1964 B-Body
  • 1991-1996 B-Body
  • 1973-1977 A-Body
  • 1965-1970 B-Body
  • 1971-1980 Chevy Vega/Monza

Specifications

  • SKU: 000-6701-00
  • Swap Engine: LS
  • Brand: Muscle Rods
  • Material: Cast Iron
  • What's Included:
    • Both Exhaust Manifolds
    • Durable Welding Flanges
    • OEM-Style Gaskets
    • Bolts
    • Studs
    • Hardware

Key Features

  • Crafted from Hi-Silicon-Moly ductile iron for exceptional durability
  • Tight tuck configuration with 2.25-inch outlet for optimal exhaust flow
  • Designed to enhance catalytic converter efficiency and support up to 500 hp
  • Universal fitment for classic GM vehicles including 1953-1982 Corvette
  • Natural cast finish with optional ceramic coating for corrosion protection

Benefits

  • Endures extreme heat for reliable, long-lasting performance
  • Streamlines exhaust flow to boost horsepower and torque
  • Enhances catalytic efficiency while supporting up to 500 hp
  • Provides direct fit on classic GM models for easy installation
  • Resists corrosion and maintains durability with optional ceramic coating

This Item Assigned to Category and Also Fits:

Description

Cast Iron LS Exhaust Manifolds for 1953-1998 GM Chassis

When you retrofit an LS powerplant into a 1953 to 1998 GM chassis, exhaust manifold clearance and heat endurance become critical concerns. These Cast Iron Exhaust Manifolds are cast from silicon and molybdenum enriched ductile iron to resist cracking under repeated high temperature cycles while maintaining a tight tuck layout that fits narrow frame rails. Complete with OEM style gaskets, bolts and flanges, they bolt straight on to Chevrolet Corvettes, G Body coupes and GM trucks without altering steering components.

Robust Ductile Iron Construction for Heat Resilience

Cast from a silicon and molybdenum enriched ductile iron alloy, these exhaust manifolds excel at resisting cracking and warping under the repeated high temperature cycles typical of LS engine swaps. The unique alloy composition maintains structural integrity even when subjected to sustained heat, ensuring the runners hold their shape and sealing surfaces remain precise. This inherent toughness allows the manifolds to withstand street driving and track sessions without fatigue. The natural cast finish also provides a solid base for optional surface treatments, extending service life in corrosive environments.

Tight Tuck Layout Optimizes Clearance and Flow

The closely packed runner configuration positions the manifold against the block to maximize space in narrow engine bays found in classic GM cars and trucks. By maintaining a compact design, the clearance between frame rails and steering components is preserved without sacrificing exhaust capacity. A smooth internal passage leads to a 2.25 inch outlet that sustains exhaust velocity, improving scavenging and reducing backpressure. This balance of fitment and flow translates into more responsive torque across the rpm range.

Comprehensive Hardware Kit Simplifies Installation

Each set includes precision matched welding flanges, OEM style gaskets, bolts, studs, and all necessary hardware to ensure a straight-forward installation. Providing every component eliminates the risk of mismatched parts and the need for multiple orders, which saves time during assembly. The supplied gaskets and bolt patterns mirror factory dimensions for a reliable seal and proper alignment. Installers benefit from the plug-and-play nature of the kit on popular platforms like Corvette, G-Body and GM trucks.

Enhanced Exhaust Flow Supporting High Output

Engineered to handle power levels up to 500 horsepower, these manifolds improve catalytic converter performance by delivering stable temperatures and consistent flow. The maintained exhaust velocity promotes faster light-off of catalysts, reducing warm-up time and aiding emissions control. With minimized backpressure, engines breathe more freely, boosting both peak output and low end torque. The result is a more responsive throttle feel and dependable operation in high output LS applications.

A reliable choice for precise fit and consistent exhaust flow in your LS retrofit.

Fitment

Fitment

  • 1953-1982 Chevy Corvette
  • 1977-1995 Chevy G Series Van
  • 1955-1957 Chevy
  • 1978-1988 G-Body
  • 1963-1972 GM Trucks
  • 1973-1987 GM Trucks
  • 1988-1998 GM Trucks
  • 1964-1972 A-Body
  • 1977-1990 B-Body
  • 1970-1981 F-Body
  • 1958-1964 B-Body
  • 1991-1996 B-Body
  • 1973-1977 A-Body
  • 1965-1970 B-Body
  • 1971-1980 Chevy Vega/Monza
Features
  • Crafted from Hi-Silicon-Moly ductile iron for exceptional durability
  • Tight tuck configuration with 2.25-inch outlet for optimal exhaust flow
  • Designed to enhance catalytic converter efficiency and support up to 500 hp
  • Universal fitment for classic GM vehicles including 1953-1982 Corvette
  • Natural cast finish with optional ceramic coating for corrosion protection
Benefits
  • Endures extreme heat for reliable, long-lasting performance
  • Streamlines exhaust flow to boost horsepower and torque
  • Enhances catalytic efficiency while supporting up to 500 hp
  • Provides direct fit on classic GM models for easy installation
  • Resists corrosion and maintains durability with optional ceramic coating
What's Included
  • Both Exhaust Manifolds
  • Durable Welding Flanges
  • OEM-Style Gaskets
  • Bolts
  • Studs
  • Hardware
Specifications
  • SKU: 000-6701-00
  • Brand: Muscle Rods
  • Swap Engine: LS
  • Material: Cast Iron