1. Manifolds & Headers Offered
  2. sku: 400781656436652
  3. GM 3869869

GM 3869869 General Exhaust Manifold Left Smog 3969869 A31

fits model: 454, Corvette. year: 1970–1974.

3969869 Gm General Motors 3869869 1970-1974 Corvette Gm# 454 Exhaust Manifold Left With Smog Dated A31- 74

( Brand: Gm ), ( Loc: Suspension Wall ), ( Casting Number: 3869869 ), ( Color: Cast Iron ), ( Cylinder Head Type: Bbc ), ( Vintage Part: Yes ), ( Placement On Vehicle: Left ), ( Fuel Type: Gasoline ), ( Type: Exhaust Manifold ), ( Features: Smog Holes ), ( Country/region Of Manufacture: United States ), ( Manufacturer Oem: Gm, General Motors )

Review GM General Motors Gm# Exhaust Manifold Left Smog Dated A31 fits CORVETTE 454 1970–1974

The GM General 3869869 1970-1974 Corvette 454 Exhaust Manifold Left Smog A31 is a vital component for any classic 1970s Corvette with a 454 engine. This exhaust manifold is specifically designed for the smog-equipped models, ensuring compliance with the environmental regulations of the time while maintaining optimal engine performance.

The manifold is made of high-quality materials, ensuring durability and resistance to corrosion. Its unique design allows for efficient exhaust gas flow, reducing backpressure and improving engine performance. The manifold features a 3-inch inlet and 2-inch outlet, providing a balanced exhaust system for the 454 engine.

The A31 smog-compliant design includes a built-in oxygen sensor port, allowing for easy installation of modern oxygen sensors. This ensures that the engine is operating at its optimal fuel-air mixture, improving both performance and fuel efficiency. The manifold is also designed to accommodate the use of catalytic converters, further enhancing the vehicle's emissions compliance.

The GM General 3869869 1970-1974 Corvette 454 Exhaust Manifold Left Smog A31 is a direct replacement for the original part, ensuring a perfect fit. The manifold is easy to install, with clear instructions and mounting hardware included in the package.

In summary, the GM General 3869869 1970-1974 Corvette 454 Exhaust Manifold Left Smog A31 is a high-quality, durable, and performance-enhancing component for your classic Corvette. Its smog-compliant design ensures environmental compliance, while its efficient exhaust gas flow improves engine performance. With its easy installation and direct replacement fit, this manifold is a must-have for any 1970s Corvette 454 engine owner.

Pros of buying GM General 3869869 1970-1974 Corvette 396/454 exhaust manifold (A31, smog-compliant):

1. High-quality material: This exhaust manifold is made of durable cast iron, which is known for its strength and heat resistance.

2. Fits various models: This part is compatible with 1970-1974 Corvettes equipped with the 396 or 454 engines.

3. Smog-compliant: The A31 designation indicates that this manifold meets emissions regulations, making it a legal option for use in smog-controlled areas.

4. Improves performance: A properly functioning exhaust manifold can help improve engine performance by reducing backpressure and improving exhaust flow.

Cons of buying GM General 3869869 1970-1974 Corvette 396/454 exhaust manifold (A31, smog-compliant):

1. Limited availability: Due to the age of the vehicle, finding a replacement part like this can be challenging. You may need to source it from a specialist or use an online marketplace.

2. Possible compatibility issues: Although this part is designed to fit the 1970-1974 Corvette, there's a chance it may not fit perfectly, especially if there have been modifications to the engine or exhaust system.

3. Installation complexity: Installing an exhaust manifold can be a challenging task, especially for those without mechanical experience. It may be necessary to hire a professional or follow detailed instructions to ensure a proper installation.

Conclusion:

The GM General 3869869 1970-1974 Corvette 396/454 exhaust manifold (A31, smog-compliant) is a high-quality replacement part that can improve your vehicle's performance and meet smog-compliance requirements. However, its limited availability and potential compatibility issues make it a consideration worth weighing before making a purchase. If you are comfortable with the challenges, this part could be a valuable investment in maintaining your classic Corvette. Ultimately, the decision to purchase this part should be based on your specific needs, budget, and mechanical abilities.

part # 3869869 prices

  • $350.00-$1149.00

specifications maniheader:

  • for models: 454, Corvette
  • for years: 1970-1974
  • brand: Gm
  • loc: Suspension Wall
  • casting number: 3869869
  • color: Cast Iron
  • cylinder head type: Bbc
  • vintage part: Yes
  • placement on vehicle: Left
  • fuel type: Gasoline
  • type: Exhaust Manifold
  • features: Smog Holes
  • country/region of manufacture: United States
  • manufacturer oem: Gm, General Motors

offer maniheader:

  • sold: 0
  • started: September 11, 2024
  • quantity: 1
  • availability: In Stock
  • options: Ship-to-home

shipping maniheader:

  • type: Calculated
  • carrier: UPS, USPS
  • cost: $47.23
  • service: UPS Ground, USPS Ground Advantage
  • transit: 3-8 Days
  • class: Standard

general maniheader:

  • condition: Used
  • Car Truck Parts Accessories > Exhaust Emission Systems > Manifolds Headers

seller maniheader:

  • # reviews: 3830
  • rating: 99.8%

returns maniheader:

  • policy: No Returns

payments maniheader:

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for models: 454, corvette, for years: 1970-1974, loc: suspension wall, casting number: 3869869, cylinder head type: bbc, vintage part: yes, placement on vehicle: left, fuel type: gasoline, type: exhaust manifold, features: smog holes, country/region of manufacture: united states, manufacturer oem: gm, general motors,
category: auto parts > car truck parts accessories > exhaust emission systems > manifolds headers, color: cast iron, sku: 400781656436652,

Gm 3869869 Is Similar To:

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5 offers $350.00–$1149.00 USD
  • Offer #1: $595.00 price + $45.00 delivery = $640.00* total. THE EXHAUST STUDS WERE ALSO REPLACED WITH STAINLESS STEEL STUDS. BIG BLOCK ENGINES WITH THE SMOG OPTION.+$45.00 shipping
  • Offer #2: $1149.00 price + $37.15 delivery = $1186.15* total.+$37.15 shipping
  • Offer #3: $350.00 price + $40.00 delivery = $390.00* total. JESUS loves you!!! one GM original cast iron exhaust manifold for the drivers side of 70 to 74 corvettes with 454 motor options.+$40.00 shipping
  • Offer #4: $950.00 price + $35.00 delivery = $985.00* total. excellent condition one GM original die cast exhaust manifold for the drivers side of 70 to 74 corvettes.+$35.00 shipping
  • Offer #5: $1495.00 price + $33.34 delivery = $1528.34* total. I will package well!!!! Here is a set of big block exhaust manifolds for the 427 or 454 GM engine for 1965-1973? They look to be in PERFECT condition.+$33.34 shipping