This American Thunder exhaust system was specially designed for 1973-1974 Chevrolet and GMC C10 and C15 1/2 ton and 3/4 ton 2wd trucks and is perfect for the person looking for moderate to aggressive interior and exterior sound levels. The crossmember-back exhaust system comes complete with a built-in H-pipe crossover, all mandrel-bent 2.50-inch aluminized steel tubing, a pair of Super 44 Series performance mufflers and your choice of tailpipe exits. Either dual out rear under the bumper for a muscular look or dual out the sides behind the rear tires for that classic truck look. The system includes all hardware necessary for installation and is designed to accommodate both long and short wheelbases, with either an automatic or manual transmission and provides adequate clearance for substantially lowered vehicles. The exhaust system is covered by our 3-year Limited Warranty. Notes: Does Not include exhaust tips, header reducer cones or downpipes for factory manifolds.
Specifications:
| Description_ASC |
Does not include downpipes for factory manifolds or header reducers. |
| Description_DES |
Flowmaster American Thunder Crossmember-Back Exhaust System |
| Description_MKT |
This American Thunder exhaust system was specially designed for 1973-1974 Chevrolet and GMC C10 and C15 1/2 ton and 3/4 ton 2wd trucks and is perfect for the person looking for moderate to aggressive interior and exterior sound levels. The crossmember-back exhaust system comes complete with a built-in H-pipe crossover, all mandrel-bent 2.50-inch aluminized steel tubing, a pair of Super 44 Series performance mufflers and your choice of tailpipe exits. Either dual out rear under the bumper for a muscular look or dual out the sides behind the rear tires for that classic truck look. The system includes all hardware necessary for installation and is designed to accommodate both long and short wheelbases, with either an automatic or manual transmission and provides adequate clearance for substantially lowered vehicles. The exhaust system is covered by our 3-year Limited Warranty. Notes: Does Not include exhaust tips, header reducer cones or downpipes for factory manifolds. |
| Description_INV |
73-74 GM C10/C20 HEADER BACK AMT |
| Description_FAB |
Super 44 Series Mufflers for Deep Powerful Sound |
| Description_FAB |
Mandrel-bent 16-gauge Aluminized Steel Tubing |
| Description_FAB |
Includes Hangers and Hardware for Installation |
| Description_FAB |
Aggressive to Moderate Exterior Exhaust Tone |
| Description_FAB |
Crossmember-back True Dual Exhaust System |
| Description_FAB |
H-pipe Crossover for Maximum Power |
| Description_FAB |
Does Not Include Header Reducers or Downpipes for Factory Manifolds |
| Description_EXT |
Fits 1973-1974 Chevrolet and GMC C10, C20 2wd with V8 engines. |
| Inlet Diameter |
2.500 in. |
| Inlet Diameter (in) |
2.5 |
| Tubing Diameter (in) |
2.5 |
| Exit Style |
Straight |
| Truck Bed Length |
Long Bed, Short Bed |
| Outlet Diameter |
2.500 in. |
| Single Dual |
Dual |
| Color |
Black |
| Title |
Flowmaster 17742 Header-back 409S - American Thunder Kit - DOR/S - Mod/Agg Sound |
| Material |
Aluminized Steel |
| Product Type |
Exhaust System |
| Exhaust Series |
American Thunder |
| Muffler Type |
Welded Baffle |
| WARNING CA Proposition 65 |
No |
| California Proposition 65 Required |
No |
| Sound Level |
Aggressive / Moderate |
| Outlet Outside Diameter |
2.500 in. |
| Mount Type |
Flanged |
| Tubing Material |
Aluminized Steel |
| Single or Dual |
Dual |
| Tail Pipe Diameter |
2.500 in. |
| Shape |
Oval |
| Tubing Diameter |
2.500 in. |
| Tip Diameter |
N/A |
| Exhaust Type |
Dual |
| Inlet Inside Diameter |
2.500 in. |
| Muffler Series |
Super 44 |
| Muffler Count |
2 |
| 2WD/4WD |
2WD |
| Brand |
Flowmaster |
| Choose Your Part |
Exhaust System |
| Emission Code |
5 |
| Exit Position |
Dual Out Rear / Dual Out Side |
| Muffler Quantity |
2 |
| Outlet Diameter (in) |
2.5 |
| Sale Category |
Exhaust |
| System Type |
Crossmember-back, Swap |
| Length |
18.0000 |
| Width |
16.0000 |
| Height |
64.0000 |
| Weight |
78.0000 |
