See more parts for Buick GS
Select the year of your Buick GS:
Product thumb
Flowmaster Header 409S - 4-1 One piece - 3.00 in. Ball and Socket Flange Outlet - Pair Chevrolet Chevelle 1964-1972
$1159.95

This product is for Racing Competition only and is not legal for use in highway or street vehicles or other non-racing competition off-road vehicles.

Purchasing this product requires you to sign our Vehicle Compliance Waiver here.

Flowmaster's Scavenger Series Elite headers are built tough with 3/8-inch laser-cut flanges and 16-gauge stainless steel primary pipes. These headers are designed specifically for those looking to install modern GM LS-1 and LS-6 engines into classic muscle cars like Buick, Chevy, Oldsmobile, and Pontiac. With a full-length design, you can expect a perfect fit and a boost in performance. Just a heads up, these headers are not emissions legal and are intended for off-road use only.


Features:
  • Gasket Free Ball Style Collectors
  • Ceramic Coating
  • Dyno Tuned For Maximum Performance
  • Stainless Steel Construction
Specifications:
  • Attachment Method: Ball & Socket Flange
  • Automotive Item Grade: High Performance Part
  • Bolts/Studs Included: Yes
  • California Proposition 65 Chemical Name: Chromium (hexavalent compounds)
  • California Proposition 65 Chemical Name: Nickel (Metallic)
  • California Proposition 65 Required: Yes
  • CARB (California) Compliant: No
  • Collector Included: Yes
  • Color/Finish: Silver Ceramic
  • Emission Code: 3
  • Header Flange Thickness (in): 0.375
  • Header Style: 4-1 One-Piece
  • Inlet Port Shape: Round
  • Material: Stainless Steel
  • Outlet Diameter (in): 3
  • Primary Tube Diameter (in): 1.75
  • Product Type: Exhaust Headers
  • Reducers Included: Yes
  • Tube Gauge: 16
  • Tube Lengths: Unequal Length
  • Warning: California Proposition 65
Notes:
  • Compatible with custom models from 1964 to 1972, including Chevrolet Chevelle and wagon, Buick Gran Sport, Skylark and wagon, Pontiac GTO and LeMans, and Oldsmobile Cutlass and 442 featuring an LS1 or LS6 small block engine.

Proposition 65

WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Vehicle
1970-1972
Buick GS
1968-1969
Buick GS 350
1968-1969
Buick GS 400
1970-1972
Buick GS 455
1965-1967
Buick Gran Sport
1964-1972
Buick Skylark
1964-1969
Buick Special
1964-1972
Buick Sportwagon
1964-1972
Chevrolet Chevelle
1964-1972
Chevrolet El Camino
1964-1967
Chevrolet Malibu
1971-1972
GMC Sprint
1964-1971
Oldsmobile 442
1964-1972
Oldsmobile Cutlass
1966-1972
Oldsmobile Vista Cruiser
1964-1967, 1970-1972
Pontiac GTO
1964-1970
Pontiac Tempest

Flowmaster Banner

Who is Flowmaster?

Flowmaster is an aftermarket company that was founded in 1983. The company specializes in manufacturing high-performance exhaust systems for various vehicles. This includes classic muscle cars, modern sedans, trucks, jeeps, off-road vehicles, and more. 

It has since revolutionized the industry and has continued its tradition to produce high-quality exhaust parts. Today, Flowmaster has been the go-to brand of many car builders and enthusiasts worldwide and has been the market leader for years.

Pushing the Boundaries of Exhaust Design

Flowmaster has been the pioneer when it comes to developing mufflers. They produce mufflers that are quiet enough to be used legally on the streets but, at the same time, does not restrict the performance of the engine. This is why more and more people are choosing Flowmaster for their car builds as they can enjoy their vehicles on and off the streets.

An Exhaust For Any Style

The company provides its customers with the ability to choose the type of muffler they want. They offer five sound categories of their exhaust system, from quiet and discrete to something more aggressive and gives that racy sound. They can also choose between 12 designs of chambered mufflers, including their exclusively-designed “laminar-flow” muffler or “straight-through.”They also have a custom-built exhaust system for that one-of car builds.

Passionate Development Team

Flowmaster is composed of people who have years of experience in developing quality exhaust systems. Using the knowledge they acquired over the years, they improved their designs and matched it with the ever-growing technological advancement of vehicles today. 

Tried and Tested

With hundreds of installs under its belt, Flowmaster has proven itself to be a brand that delivers what it promised. In addition, all their exhaust systems are designed and dyno-tested, ensuring that they can maximize your vehicle’s performance once installed. 

Purchase Flowmaster at Vivid Racing

If you are in the market for an upgrade in your vehicle’s exhaust that would provide you with that distinct sound and improved performance, then Flowmaster is the brand for you. To know more about Flowmaster, visit Vivid Racing and check out their list of products that fit your requirement.




LIMITED WARRANTY:

This catalytic converter is warranted to be free from defects in materials andworkmanship subject to the exclusion and conditions set forth below and subject to the durational limits in this paragraph. This catalytic converter has been designed and manufactured and is warranted to meet federal Environmental Protection Agency emission requirements for 25,000 miles. The stainless steel body and the nipples alone are warranted for 5 years or 50,000 miles, whichever comesfirst. At the conclusion of the 5 year/50,000 mile or 25,000 mile period, whichever is applicable, all liability under this limited warranty shall terminate.

For full warranty information Click Here

Check out these other great products