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Flowmaster 817662 - American Thunder Cat Back Exhaust System

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$618.02

$807.87

You save: $189.85 (24%) off MSRP

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Check to see if this fits your vehicle

This part fits

  1. 1979 Chevrolet Corvette
  2. 1979 Chevrolet Corvette 5.7L V8 cid:350
  3. 1978 Chevrolet Corvette 5.7L V8 cid:350
  4. 1977 Chevrolet Corvette 5.7L V8 cid:350
  5. 1976 Chevrolet Corvette 5.7L V8 cid:350
  6. 1975 Chevrolet Corvette 5.7L V8 cid:350
Authorized Dealer

About this product

Part #: 817662

Flowmaster introduces their new stainless steel American Thunder cat-back system for the 1975-1979 Chevrolet Corvettes with 5.7L, V8 engines. This fully mandrel bent 2.50 system features 50 Series Delta Flow mufflers and 3.00 polished stainless steel tips. As an American Thunder system it will typically produce a moderate interior and exterior sound level with all of the performance benefits that you would expect from Flowmaster. Constructed in durable 409S stainless steel, the system is covered by Flowmaster's Lifetime Limited Warranty. All necessary parts and hardware are included for a great fitting installation. Note: To complete the system for these applications, Flowmaster also offers a direct fit converter, part # 2010036 (49 state legal), and manifold Y-pipe # 81087.

More Details

2WD/4WDRWD
Bullet Point #1Stainless Steel Construction
Bullet Point #2Dyno Tuned For Maximum Performance
Bullet Point #3Patented Delta Flow Technology
Bullet Point #4Lifetime Limited Warranty
Exhaust SeriesAmerican Thunder
Exhaust TypeDual
Exit PositionDual Rear Exit
Exit StyleTurn Down
Heat ShieldNo
Heat Shield AttachedNo
Inlet Diameter2.5
Inlet Diameter (in)2.5
Inlet Inside Diameter (in.)2.5
MaterialStainless Steel
Muffler Count2
Muffler Part NumberKit Only
Muffler Quantity2
Muffler Series50 Series Delta Flow
Outlet Diameter2.5 in.
Outlet Diameter (in)2.5
Outlet Outside Diameter (in.)3
Single DualDual
Single or DualDual
Sound LevelModerate Sound
System TypeCat-back System
System TypeCat Back
TitleFlowmaster 817662 Cat-Back System 409S - Dual Rear Exit - American Thunder - Moderate Sound
Tubing Diameter2.50 in.
Tubing Diameter (in)2.5
Additional Documents
  1. Certificate of Originpdf
  2. Installation Instructionspdf
  3. Warrantypdf

See what our community says about flowmaster products

product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
I already had the Flowmaster Axle Back to go with it.
Is this your first time buying from this brand? Did you consider other brands?
I have other parts from Flowmaster.
View on Matt's build
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What made you choose this particular product?
Super 40'soft sound amazing...but drone makes them not family or neighbour friendly.
Is this your first time buying from this brand? Did you consider other brands?
Yes. I have used magna flow in the past, better for longer drives but not as nasty sounding...and I mean nasty in a good way!
View on Brett's build
CeJay Innes-Mammen

371

CeJay Innes-Mammen
2006 Dodge Charger
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What made you choose this particular product?
Prior experience with these mufflers on other HEMI's
Is this your first time buying from this brand? Did you consider other brands?
Long time patron
View on CeJay's build
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
Got these for a deal of a GT in the local junkyard. Cheap and had everything I needed to fit to my car.
Is this your first time buying from this brand? Did you consider other brands?
Yes, but my dad has had Flowmasters before so between that and their excellent reputation I knew they were for me.
Was it easy to install? Any installation tips that will help others?
Somewhat difficult. Passenger side pipe would not go in the car even after loosening the shock mounts and letting it droop from the control arms. It had to be cut and welded in the car
Once you've had a chance to use the product, did it meet your expectations?
Yes, sounded excellent especially for a V6
View on Joey's build
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
Wanted to try the single chamber muffler out
Is this your first time buying from this brand? Did you consider other brands?
No as I've always purchased Flowmaster
Once you've had a chance to use the product, did it meet your expectations?
Priced as usual for Flowmaster and I must say it's something you must experience yourself
View on Steven's build
California prop 65 warningWARNING: Cancer and Reproductive Harm www.p65warnings.cs.gov

*Some manufacturer restrictions apply.

About Flowmaster

Manufacturer of performance exhaust systems, mufflers, cold air intakes, turbo boost modules, catalytic converters, race mufflers, headers and numerous exhaust accessories for late model cars, trucks, off-road, Jeeps, SUV’s, classic muscle cars, powersports vehicles and more. Flowmaster® gives you lots of exhaust choices with 12 designs of chambered mufflers, 3 styles of our exclusive “laminar-flow” mufflers and a new line of FlowFX “straight-through” performance mufflers, along with 5 sound categories of exhaust systems, giving you the customer, the power to custom tailor the sound of your vehicle whether you prefer mild, moderate or aggressive tones and sound levels.

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