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Flowmaster 817673 - American Thunder Crossmember-Back Exhaust System

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$698.95

$777.00

You save: $78.05 (10%) off MSRP

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Check to see if this fits your vehicle

This part fits

  1. 1967 Chevrolet Chevy II 5.3L V8 cid:327 cc:5358
  2. 1967 Chevrolet Chevy II 4.6L V8 cid:283 cc:4638
  3. 1966 Chevrolet Chevy II 5.4L V8 cid:327
  4. 1966 Chevrolet Chevy II 5.3L V8 cid:327 cc:5358
  5. 1966 Chevrolet Chevy II 4.6L V8 cid:283
  6. 1966 Chevrolet Chevy II 4.6L V8 cid:283 cc:4638
  7. 1965 Chevrolet Chevy II 5.3L V8 cid:327 cc:5358
  8. 1965 Chevrolet Chevy II 4.6L V8 cid:283 cc:4638
  9. 1965 Chevrolet Chevy II 4.6L V8 cid:283
  10. 1965 Chevrolet Chevy II 5.4L V8 cid:327
  11. 1964 Chevrolet Chevy II 4.6L V8 cid:283 cc:4638
  12. 1964 Chevrolet Chevy II 4.6L V8 cid:283
  13. 1963 Chevrolet Chevy II 4.6L V8 cid:283 cc:4638
  14. show all...
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About this product

Part #: 817673

Flowmaster's American Thunder Crossmember-back exhaust system for the 1962-1967 Chevrolet Chevy II/Nova is perfect for the person looking for an aggressive sound level inside and outside of the car, with all of the performance benefits that you would expect from Flowmaster. This bolt-on DOS (Dual Out Side) system features stainless steel Super 44 Series mufflers and dual 2.50" 409S Stainless Steel tailpipes and a welded H-Pipe. Like all Flowmaster systems, the pipes are all mandrel bent to reduce any restrictions and maximize performance. The exhaust system is covered by Flowmaster's Lifetime Limited Warranty. Designed for an easy fit, this system includes all necessary parts and hardware for installation.

More Details

Catalytic Converter IncludedNo
ColorBlack
Exhaust SeriesAmerican Thunder
Exhaust TypeDual
Exit PositionDual Side
Exit StyleStraight
Heat Shield AttachedNo
Inlet Diameter2.500 in.
Inlet Inside Diameter2.500 in.
MaterialStainless Steel
Mount TypeFlanged
Muffler Count2
Muffler Part NumberKit Only
Muffler SeriesSuper 44 Series
Muffler TypeWelded Baffle
Outlet Diameter2.500 in.
Outlet Outside Diameter3.000 in.
ShapeOval
Single or DualDual
Sound LevelModerate/Aggressive
System TypeCrossmember Back
Tail Pipe Diameter2.500 in.
Tip Edge StyleRolled
Tip FinishPolished
Tip Length4.750 in.
Tip LogoEmbossed
Tip MaterialStainless Steel
Tip Quantity2
Tip TypeSingle Wall
Tubing Diameter2.500 in.
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?
Price sounds great
What were you trying to accomplish by adding this product?
More horsepower better sound
Was it easy install? Any installation tips that will help others?
Easy install with jack stands and hand tools
Once you’ve had a chance to use the product, did it meet your expectations?
Great diy mod
Any additional comments?
A must for your car
View on Lee'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?
Love the sound. Installed on our 2500 ram as well
What were you trying to accomplish by adding this product?
Sound
Was it easy install? Any installation tips that will help others?
Yes
Once you’ve had a chance to use the product, did it meet your expectations?
100%
View on David's build
Ben Couchenour

84

Ben Couchenour
1989 Ford Mustang
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?
Price and performance
What were you trying to accomplish by adding this product?
More power
Was it easy install? Any installation tips that will help others?
Yes
Once you’ve had a chance to use the product, did it meet your expectations?
Yes
View on Ben'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?
Needed a muffler. Straight pipe was too raspy
What were you trying to accomplish by adding this product?
Better and quieter exhaust note
Was it easy install? Any installation tips that will help others?
Installed at local muffler shop
Once you’ve had a chance to use the product, did it meet your expectations?
Sounds good. Keeps the raspyness under control till about 4000 rpm. Can be a bit drony on the highway
View on Josh'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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