Description

Flowmaster® is proud to introduce our American Thunder® dual exhaust system for 1967-1974 Chevrolet Camaro, Pontiac Firebird and 1968-1974 Chevrolet Nova's. This all stainless steel exhaust system features our exclusive design 80 Series™ Crossflow muffler, all mandrel-bent dual 2.50-inch pipes including an H-pipe crossover for a deep smooth tone that also minimizes any back-rap on deceleration. The dual 2.50-inch stainless steel tailpipes provide a deep rich sound and optimum performance. This Crossmember-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 steel street products, it includes our Limited Lifetime Warranty.

Features

  • H-pipe Crossover for Maximum Power and Deep Tone
  • Includes Hangers and Hardware for Easy Installation
  • 80 Series Cross-flow Performance Muffler
  • Mandrel-bent Stainless Steel Tubing
  • Moderate Exterior Exhaust Tone
  • Maximum Ground Clearance
  • Stainless Steel Construction
  • Lifetime Limited Warranty
  • Crossmember-Back System

Specifications

2WD/4WD2WD
BrandFlowmaster
California Proposition 65 Chemical NameChromium (hexavalent compounds), Nickel (Metallic)
California Proposition 65 RequiredYes
Catalytic Converter QuantityNot Included
Clamping TypeFlat Band
Clamps IncludedYes
Emission Code5
Exhaust SeriesAmerican Thunder
Exhaust Tip QuantitySold Separately
Exit PositionDual Out Rear
Exit StyleDual Out Rear
FinishNatural
Gasket Or Seal IncludedNo
Grade TypePerformance
Hangers IncludedYes
Heat ShieldNo
Inlet Diameter2.5
Inlet TypeWeld-On
Main Piping Diameter2.50
Main Piping Diameter2-1/2
Material409 Stainless Steel
Mounting Bracket IncludedYes
Muffler (Rear) Body Height4
Muffler (Rear) Body Length21
Muffler (Rear) Body Width9.50
Muffler (Rear) Finish409 Stainless Steel
Muffler (Rear) TypeChambered
Muffler Body Material409 Stainless Steel
Muffler Body ShapeOval
Muffler FinishBlack High-Temperature Paint Finish
Muffler Flanged InletNo
Muffler Flanged OutletNo
Muffler Inlet ConnectionSlip-Fit
Muffler Inlet Inside Diameter2.5
Muffler Inlet Outside Diameter2.63
Muffler Outlet ConnectionSlip-Fit
Muffler Outlet Quantity1
Muffler Part NumberKit Only
Muffler Quantity1
Muffler Series80 Series Crossflow
Muffler TypeChambered
Outlet Diameter2.5
Pipe MaterialStainless Steel
Product TypeExhaust System
Sale CategoryExhaust
Single DualDual
Sound LevelModerate
Spring Bolt Kit IncludedNo
System TypeCrossmember-back
Tail Pipe Outlet Outside Diameter2.5
Tail Pipe Quantity2
Tail Pipe Tapered OutletNo
Tip QuantityNot Included
Tube Diameter2.5 inch
Tubing Diameter2.5
TypeCrossmember-back
Type of ExhaustCrossmember-back
Valve IncludedNo
Valve TypeNot Included

Compatibility

  • 1967 - 1972 Chevrolet Camaro SS 5.7
  • 1967 - 1969 Chevrolet Camaro Z28 4.9
  • 1967 - 1969 Chevrolet Camaro Base 5.3
  • 1967 - 1969 Chevrolet Camaro RS 5.3
  • 1967 - 1969 Chevrolet Camaro SS 6.5
  • 1967 - 1967 Chevrolet Camaro RS 5.7
  • 1969 - 1973 Chevrolet Camaro RS 5.7
  • 1967 - 1967 Chevrolet Camaro Base 6.5
  • 1967 - 1967 Chevrolet Camaro RS 6.5
  • 1968 - 1969 Chevrolet Camaro Base 5.4
  • 1968 - 1969 Chevrolet Camaro RS 5.4
  • 1969 - 1974 Chevrolet Camaro Base 5.7
  • 1969 - 1973 Chevrolet Camaro RS 5.0
  • 1969 - 1973 Chevrolet Camaro Base 5.0
  • 1969 - 1969 Chevrolet Camaro Base 7.0
  • 1969 - 1969 Chevrolet Camaro RS 7.0
  • 1970 - 1974 Chevrolet Camaro Z28 5.7
  • 1970 - 1972 Chevrolet Camaro SS 6.6
  • 1971 - 1972 Chevrolet Camaro Base 6.6
  • 1972 - 1972 Chevrolet Camaro Z28 6.6
  • 1973 - 1974 Chevrolet Camaro LT 5.7
  • 1973 - 1973 Chevrolet Camaro LT 5.0
  • 1969 - 1974 Chevrolet Nova Base 5.7
  • 1969 - 1973 Chevrolet Nova Base 5.0
  • 1969 - 1970 Chevrolet Nova Base 6.5
  • 1970 - 1972 Chevrolet Nova Base 6.6
  • 1970 - 1971 Chevrolet Nova Base 7.4
  • 1973 - 1974 Chevrolet Nova Custom 5.7
  • 1973 - 1973 Chevrolet Nova Custom 5.0
  • 1967 - 1974 Pontiac Firebird Base 6.6
  • 1967 - 1969 Pontiac Firebird 400 6.6
  • 1967 - 1967 Pontiac Firebird 326 5.3
  • 1967 - 1967 Pontiac Firebird Base 5.3
  • 1967 - 1967 Pontiac Firebird HO 5.3
  • 1967 - 1967 Pontiac Firebird HO 6.6
  • 1968 - 1974 Pontiac Firebird Base 5.7
  • 1968 - 1969 Pontiac Firebird 350 5.7
  • 1968 - 1968 Pontiac Firebird HO 5.7
  • 1969 - 1974 Pontiac Firebird Trans Am 6.6
  • 1969 - 1969 Pontiac Firebird 350 HO 5.7
  • 1970 - 1974 Pontiac Firebird Esprit 5.7
  • 1970 - 1974 Pontiac Firebird Formula 5.7
  • 1970 - 1974 Pontiac Firebird Trans Am 5.7
  • 1970 - 1974 Pontiac Firebird Esprit 6.6
  • 1970 - 1974 Pontiac Firebird Formula 6.6
  • 1971 - 1974 Pontiac Firebird Base 7.5
  • 1971 - 1974 Pontiac Firebird Esprit 7.5
  • 1971 - 1974 Pontiac Firebird Formula 7.5
  • 1971 - 1974 Pontiac Firebird Trans Am 7.5

Flowmaster® is proud to introduce our American Thunder® dual exhaust system for 1967-1974 Chevrolet Camaro, Pontiac Firebird and 1968-1974 Chevrolet Nova's. This all stainless steel exhaust system features our exclusive design 80 Series™ Crossflow muffler, all mandrel-bent dual 2.50-inch pipes including an H-pipe crossover for a deep smooth tone that also minimizes any back-rap on deceleration. The dual 2.50-inch stainless steel tailpipes provide a deep rich sound and optimum performance. This Crossmember-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 steel street products, it includes our Limited Lifetime Warranty.

Features

  • H-pipe Crossover for Maximum Power and Deep Tone
  • Includes Hangers and Hardware for Easy Installation
  • 80 Series Cross-flow Performance Muffler
  • Mandrel-bent Stainless Steel Tubing
  • Moderate Exterior Exhaust Tone
  • Maximum Ground Clearance
  • Stainless Steel Construction
  • Lifetime Limited Warranty
  • Crossmember-Back System
2WD/4WD2WD
BrandFlowmaster
California Proposition 65 Chemical NameChromium (hexavalent compounds), Nickel (Metallic)
California Proposition 65 RequiredYes
Catalytic Converter QuantityNot Included
Clamping TypeFlat Band
Clamps IncludedYes
Emission Code5
Exhaust SeriesAmerican Thunder
Exhaust Tip QuantitySold Separately
Exit PositionDual Out Rear
Exit StyleDual Out Rear
FinishNatural
Gasket Or Seal IncludedNo
Grade TypePerformance
Hangers IncludedYes
Heat ShieldNo
Inlet Diameter2.5
Inlet TypeWeld-On
Main Piping Diameter2.50
Main Piping Diameter2-1/2
Material409 Stainless Steel
Mounting Bracket IncludedYes
Muffler (Rear) Body Height4
Muffler (Rear) Body Length21
Muffler (Rear) Body Width9.50
Muffler (Rear) Finish409 Stainless Steel
Muffler (Rear) TypeChambered
Muffler Body Material409 Stainless Steel
Muffler Body ShapeOval
Muffler FinishBlack High-Temperature Paint Finish
Muffler Flanged InletNo
Muffler Flanged OutletNo
Muffler Inlet ConnectionSlip-Fit
Muffler Inlet Inside Diameter2.5
Muffler Inlet Outside Diameter2.63
Muffler Outlet ConnectionSlip-Fit
Muffler Outlet Quantity1
Muffler Part NumberKit Only
Muffler Quantity1
Muffler Series80 Series Crossflow
Muffler TypeChambered
Outlet Diameter2.5
Pipe MaterialStainless Steel
Product TypeExhaust System
Sale CategoryExhaust
Single DualDual
Sound LevelModerate
Spring Bolt Kit IncludedNo
System TypeCrossmember-back
Tail Pipe Outlet Outside Diameter2.5
Tail Pipe Quantity2
Tail Pipe Tapered OutletNo
Tip QuantityNot Included
Tube Diameter2.5 inch
Tubing Diameter2.5
TypeCrossmember-back
Type of ExhaustCrossmember-back
Valve IncludedNo
Valve TypeNot Included
  • 1967 - 1972 Chevrolet Camaro SS 5.7
  • 1967 - 1969 Chevrolet Camaro Z28 4.9
  • 1967 - 1969 Chevrolet Camaro Base 5.3
  • 1967 - 1969 Chevrolet Camaro RS 5.3
  • 1967 - 1969 Chevrolet Camaro SS 6.5
  • 1967 - 1967 Chevrolet Camaro RS 5.7
  • 1969 - 1973 Chevrolet Camaro RS 5.7
  • 1967 - 1967 Chevrolet Camaro Base 6.5
  • 1967 - 1967 Chevrolet Camaro RS 6.5
  • 1968 - 1969 Chevrolet Camaro Base 5.4
  • 1968 - 1969 Chevrolet Camaro RS 5.4
  • 1969 - 1974 Chevrolet Camaro Base 5.7
  • 1969 - 1973 Chevrolet Camaro RS 5.0
  • 1969 - 1973 Chevrolet Camaro Base 5.0
  • 1969 - 1969 Chevrolet Camaro Base 7.0
  • 1969 - 1969 Chevrolet Camaro RS 7.0
  • 1970 - 1974 Chevrolet Camaro Z28 5.7
  • 1970 - 1972 Chevrolet Camaro SS 6.6
  • 1971 - 1972 Chevrolet Camaro Base 6.6
  • 1972 - 1972 Chevrolet Camaro Z28 6.6
  • 1973 - 1974 Chevrolet Camaro LT 5.7
  • 1973 - 1973 Chevrolet Camaro LT 5.0
  • 1969 - 1974 Chevrolet Nova Base 5.7
  • 1969 - 1973 Chevrolet Nova Base 5.0
  • 1969 - 1970 Chevrolet Nova Base 6.5
  • 1970 - 1972 Chevrolet Nova Base 6.6
  • 1970 - 1971 Chevrolet Nova Base 7.4
  • 1973 - 1974 Chevrolet Nova Custom 5.7
  • 1973 - 1973 Chevrolet Nova Custom 5.0
  • 1967 - 1974 Pontiac Firebird Base 6.6
  • 1967 - 1969 Pontiac Firebird 400 6.6
  • 1967 - 1967 Pontiac Firebird 326 5.3
  • 1967 - 1967 Pontiac Firebird Base 5.3
  • 1967 - 1967 Pontiac Firebird HO 5.3
  • 1967 - 1967 Pontiac Firebird HO 6.6
  • 1968 - 1974 Pontiac Firebird Base 5.7
  • 1968 - 1969 Pontiac Firebird 350 5.7
  • 1968 - 1968 Pontiac Firebird HO 5.7
  • 1969 - 1974 Pontiac Firebird Trans Am 6.6
  • 1969 - 1969 Pontiac Firebird 350 HO 5.7
  • 1970 - 1974 Pontiac Firebird Esprit 5.7
  • 1970 - 1974 Pontiac Firebird Formula 5.7
  • 1970 - 1974 Pontiac Firebird Trans Am 5.7
  • 1970 - 1974 Pontiac Firebird Esprit 6.6
  • 1970 - 1974 Pontiac Firebird Formula 6.6
  • 1971 - 1974 Pontiac Firebird Base 7.5
  • 1971 - 1974 Pontiac Firebird Esprit 7.5
  • 1971 - 1974 Pontiac Firebird Formula 7.5
  • 1971 - 1974 Pontiac Firebird Trans Am 7.5

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