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Flowmaster 817457 American Thunder Exhaust Kit, 78-88 GM A/G-Body
Flowmaster 817457 American Thunder Exhaust Kit, 78-88 GM A/G-Body

Flowmaster 817457 American Thunder Exhaust Kit, 78-88 GM A/G-Body

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Flowmaster 817457 American Thunder Exhaust Kit, 78-88 GM A/G-Body
Flowmaster 817457 American Thunder Exhaust Kit, 78-88 GM A/G-Body
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Part # 378817457
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Important Messages:

  • This product is discontinued.
  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.

Details

Tube O.D.:
2.5"
Material Type:
Stainless Steel
Outlet Location:
Dual Rear
Outlet Size:
2.5
MFG. Part #:
817457
GTIN Code:
700042024001
Heat Shield:
No
Muffler Quantity:
2
Muffler Series:
Super 44 Series
Single or Dual:
Dual
Sound Level:
Aggressive Sound
Exhaust System Type:
Header-back System
Drivetrain:
2WD
Tip Quantity:
2
Notes:
Requires the use of a "double hump" cross member. For off road use only.

Info

For the person who is looking for a complete Header-back dual exhaust system with an aggressive tone. With easy fit in mind, these systems are mandrel bent for maximum performance and include specially selected mufflers. This America Thunder system delivers an aggressive interior and exterior tone and is suited to the enthusiast who wants their performance to be heard. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation. Note, requires the use of a double hump cross member.

  • Mandrel bent 16 gauge stainless steel tubing
  • Aggressive Sound Exterior Exhaust Tone
  • Includes hangers and hardware for easy installation
  • Header-back System

Installation Instructions (PDF)

Application

1979-1980 Buick Regal 301 CID/4.9L V8
1978-1980 Buick Regal 305 CID/5.0L V8
1978-1980 Oldsmobile Cutlass Calais 305 CID/5.0L V8
1979-1980 Oldsmobile Cutlass Calais 350 CID/5.7L V8
1978-1980 Oldsmobile Cutlass Salon 305 CID/5.0L V8
1978-1980 Oldsmobile Cutlass Salon 4.3L V8
1978-1980 Oldsmobile Cutlass Supreme 305 CID/5.0L V8
1978-1980 Oldsmobile Cutlass Supreme 350 CID/5.7L V8
1978-1980 Pontiac Grand Am 301 CID/4.9L V8
1978-1980 Pontiac Grand Am 305 CID/5.0L V8
1978-1980 Pontiac Grand Prix 301 CID/4.9L V8
1980-1981 Oldsmobile Cutlass 4.3L V8
1979-1982 Chevrolet Monte Carlo 4.4L V8
1978-1982 Oldsmobile Cutlass Calais 4.3L V8
1978-1982 Oldsmobile Cutlass Supreme 4.3L V8
1982-1984 Oldsmobile Cutlass Calais 307 CID/5.0L V8
1986-1987 Buick Regal 307 CID/5.0L V8
1985-1987 Oldsmobile Cutlass Salon 307 CID/5.0L V8
1978-1987 Pontiac Grand Prix 305 CID/5.0L V8
1978-1988 Chevrolet Monte Carlo 305 CID/5.0L V8
1982-1988 Oldsmobile Cutlass Supreme 307 CID/5.0L V8
1979 Oldsmobile Cutlass Salon 350 CID/5.7L V8
1980 Oldsmobile Cutlass 305 CID/5.0L V8
1980 Oldsmobile Cutlass 350 CID/5.7L V8

Notes

Fits 1978 to 1988 GM A-Body and G-Body with a V8 engine. Requires the use of a inch double hump inch crossmember.
Some parts are not legal for use in California or other states with similar laws/regulations

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