1964-1972 Chevrolet Chevelle Header-back Exhaust System Flowmaster American Thunder
1964-1972 Chevrolet Chevelle Header-back Exhaust System Flowmaster American Thunder
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Overview:
This American Thunder® Crossmember-Back exhaust system is custom designed for most 1964-1972 GM A-body cars and is for the person looking for a complete 2.50-inch dual exhaust system with a moderately aggressive exterior tone and a moderate interior sound. With easy fit in mind, these aluminized steel systems feature all mandrel-bent tubing, an H-pipe to equalize the exhaust pressures for maximum performance and deep sound and includes a pair of specially selected Super 40™ mufflers. The mandrel-bent 2.50-inch tailpipes tuck up out of the way for maximum clearance and offer you two choices of tailpipe exit styles. Like all Flowmaster® systems, benefits include improved throttle response, power, and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for an easy installation and is covered by our 3-year Limited Warranty.
Features:
Specs:
Applications:
- 1970-1972 Buick GS 350 CID
- 1968-1969 Buick GS 350 350 CID
- 1968-1969 Buick GS 400 400 CID
- 1970-1972 Buick GS 455 455 CID
- 1965-1966 Buick Gran Sport 401 CID
- 1967-1967 Buick Gran Sport 340 CID
- 1967-1967 Buick Gran Sport 400 CID
- 1964-1967 Buick Skylark 300 CID
- 1965-1966 Buick Skylark 401 CID
- 1966-1967 Buick Skylark 340 CID
- 1967-1968 Buick Skylark 400 CID
- 1968-1972 Buick Skylark 350 CID
- 1970-1971 Buick Skylark 455 CID
- 1964-1967 Buick Special 300 CID
- 1966-1967 Buick Special 340 CID
- 1968-1969 Buick Special 350 CID
- 1964-1965 Buick Sportwagon 300 CID
- 1966-1967 Buick Sportwagon 340 CID
- 1968-1969 Buick Sportwagon 350 CID
- 1968-1969 Buick Sportwagon 400 CID
- 1964-1968 Chevrolet Chevelle 327 CID
- 1964-1967 Chevrolet Chevelle 283 CID
- 1965-1969 Chevrolet Chevelle 396 CID
- 1968-1972 Chevrolet Chevelle 307 CID
- 1969-1972 Chevrolet Chevelle 350 CID
- 1970-1972 Chevrolet Chevelle 402 CID
- 1970-1972 Chevrolet Chevelle 454 CID
- 1964-1969 Chevrolet El Camino 327 CID
- 1964-1967 Chevrolet El Camino 283 CID
- 1966-1970 Chevrolet El Camino 396 CID
- 1968-1972 Chevrolet El Camino 307 CID
- 1968-1972 Chevrolet El Camino 350 CID
- 1970-1972 Chevrolet El Camino 400 CID
- 1970-1972 Chevrolet El Camino 402 CID
- 1970-1972 Chevrolet El Camino 454 CID
- 1970-1972 Chevrolet Monte Carlo 350 CID
- 1970-1972 Chevrolet Monte Carlo 400 CID
- 1970-1972 Chevrolet Monte Carlo 402 CID
- 1970-1972 Chevrolet Monte Carlo 454 CID
- 1971-1972 GMC Sprint 307 CID
- 1971-1972 GMC Sprint 350 CID
- 1971-1972 GMC Sprint 402 CID
- 1971-1972 GMC Sprint 400 CID
- 1971-1972 GMC Sprint 454 CID
- 1964-1964 Oldsmobile 442 330 CID
- 1965-1969 Oldsmobile 442 400 CID
- 1968-1971 Oldsmobile 442 455 CID
- 1964-1967 Oldsmobile F85 330 CID
- 1965-1966 Oldsmobile F85 400 CID
- 1968-1972 Oldsmobile F85 350 CID
- 1970-1972 Oldsmobile F85 455 CID
- 1964-1967 Oldsmobile Cutlass 330 CID
- 1965-1968 Oldsmobile Cutlass 400 CID
- 1968-1972 Oldsmobile Cutlass 350 CID
- 1970-1972 Oldsmobile Cutlass 455 CID
- 1967-1967 Oldsmobile Cutlass Supreme 330 CID
- 1968-1972 Oldsmobile Cutlass Supreme 350 CID
- 1971-1972 Oldsmobile Cutlass Supreme 455 CID
- 1964-1967 Oldsmobile Vista Cruiser 330 CID
- 1968-1972 Oldsmobile Vista Cruiser 350 CID
- 1968-1969 Oldsmobile Vista Cruiser 400 CID
- 1970-1972 Oldsmobile Vista Cruiser 455 CID
- 1964-1966 Pontiac GTO 389 CID
- 1967-1972 Pontiac GTO 400 CID
- 1970-1972 Pontiac GTO 455 CID
- 1964-1967 Pontiac Beaumont 283 CID
- 1964-1967 Pontiac Beaumont 327 CID
- 1965-1967 Pontiac Beaumont 396 CID
- 1968-1972 Pontiac Grand Prix 400 CID
- 1968-1969 Pontiac Grand Prix 428 CID
- 1970-1972 Pontiac Grand Prix 455 CID
- 1964-1967 Pontiac LeMans 326 CID
- 1968-1972 Pontiac LeMans 350 CID
- 1968-1972 Pontiac LeMans 400 CID
- 1970-1972 Pontiac LeMans 455 CID
- 1964-1967 Pontiac Tempest 326 CID
- 1968-1970 Pontiac Tempest 350 CID
- 1968-1970 Pontiac Tempest 400 CID
Emissions:
- This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

Policies and FAQs
Return Policy
Fault reasons include but are not limited to:
- Buyer was shipped the wrong product
- Buyer was shipped a damaged product
- The product page had incorrect fitment and the part does not fit the Buyer's vehicle
Opened boxes, plastic bags, and other packaging are not considered damage (excluding single use items such as, but not limited to, liquids, software, and other components that cannot be reused/resealed).
FAQs
|Q. What is an Intermediate Brake Line?
|A. This is the line that runs from the front of the vehicle to the rear. On most vehicles it connects to a junction then you will have rear axle lines. On a few cars the intermediate lines will connect to the rear wheels. It is recommended to change the axle lines if you are replacing the intermediate lines.
|Q. What is included in a pre bent brake line kit?
|A. Our kits include all of the solid metal lines for that section of the vehicle
|Q. I need to return something - what's your return policy?
|A. We are happy to help! Please help us to help you by going to our return form and filling out the form as best as you can in order to request a return.
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Modern Day stands by our parts and is happy to accept returns within 30 days of purchase. Parts must be in new condition.
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If a part arrives damaged, or is defective, Please report it to us immediately. So we can handle it for your promptly.