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817104 - Flowmaster American Thunder Header-back Exhaust System - default Image
817104 - Flowmaster American Thunder Header-back Exhaust System - additional Image
817104 - Flowmaster American Thunder Header-back Exhaust System - additional Image
1967-74 Camaro, Firebird, 1968-74 Nova - American Thunder Exhaust System 17104, 817104YouTube Button

Flowmaster American Thunder Header-back Exhaust System

1967-1974 Chevrolet Camaro, Pontiac Firebird with V8 engine. (See applications below)

PART# 817104

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Fits 1967-1974 Chevrolet Camaro and Pontiac Firebird with V8 engine, also fits 1968-1974 Chevrolet Nova with V8 engine. Note: Convertible models require 3/8-inch of shims or an aftermarket Hotchis Performance X-brace part# 1404 for clearance.

Overview

Flowmaster is proud to introduce our American Thunder dual exhaust system for 1967-74 Camaro/Firebird and 1968-74 Nova. The system features our exclusive design 80 Series Crossflow muffler, all mandrel-bent dual 2.50-inch head pipes including an H-pipe crossover, and dual 2.50-inch tailpipes for a deep rich sound and optimum performance. This header-back 409S stainless system gives these classic muscle cars a moderate tone inside and out. Using the crossflow design, this exhaust places the muffler in the factory location behind the rear axle retaining full ground clearance under the car while offering all the performance benefits of a full dual exhaust system. The system includes all parts, hardware and illustrated instructions, and like all Flowmaster stainless products, it includes our Limited Lifetime Warranty.

Features:

  • H-pipe Crossover for Maximum Power and Deep Tone
  • Includes Hangers and Hardware for Easy Installation
  • Mandrel-bent Stainless Steel Tubing
  • Moderate Exterior Exhaust Tone
  • Maximum Ground Clearance
  • Stainless Steel Construction
  • Lifetime Limited Warranty
  • Header-back System

Specs

2WD/4WD2WD
BrandFlowmaster
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 RequiredYes
Emission Code3
Exhaust SeriesAmerican Thunder
Exit PositionDual Rear Exit
Heat ShieldNo
Inlet Diameter (in)2.5
MaterialStainless Steel
Muffler Part NumberKit Only
Muffler Quantity1
Muffler Series80 Series Crossflow
Outlet Diameter (in)2.5
Product TypeExhaust Systems / Kits
Single DualDual
Sound LevelModerate Sound
System TypeHeader-back System
Tip QuantityNot Included
Tubing Diameter (in)2.5
Type of ExhaustHeader-Back
Part Number817104

Emissions

This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles and Racing Use Only Vehicles.

The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:

  • 1965 and older U.S. manufactured California Certified vehicles
  • 1967 and older U.S. manufactured Federally Certified vehicles
  • 1967 and older Foreign manufactured vehicle

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition and that are not registered and that may never be used on the street

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

The following vehicles are considered Emissions Controlled Vehicles:

  • 1966 and newer U.S. manufactured California Certified vehicles
  • 1968 and newer U.S. manufactured Federally Certified vehicles
  • 1968 and newer Foreign manufactured vehicle

Tech Resources

Fits 1967-1974 Chevrolet Camaro and Pontiac Firebird with V8 engine, also fits 1968-1974 Chevrolet Nova with V8 engine. Note: Convertible models require 3/8-inch of shims or an aftermarket Hotchis Performance X-brace part# 1404 for clearance.

Applications

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      Some parts are not legal for use in California or other states with similar regulations.

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