The factory exhaust manifolds on your G8, SS Sedan, or Caprice PPV are one of the first restrictions holding back your LS engine. Speed Engineering's 2" longtube headers are a direct-fit, dyno-proven upgrade delivering over 25 rear-wheel horsepower over stock with improved throttle response and a deeper, more aggressive exhaust tone. Specifically engineered to clear the factory oil cooler on all three platforms.
Built from 304 natural stainless steel with mandrel-bent primary tubes, CNC-machined flanges, collector spikes, and full TIG-welded construction. Standard graphite manifold gaskets included.
⚠️ Important Note: X-pipe and true dual exhaust will require modifications for installation on Caprice PPV applications.
Features:
- Full 2" Port-Matched Primary Tubes — Maximum flow from cylinder head to collector for aggressive LS performance
- 3" Collector with Collector Spikes — Optimized merge geometry for strong low-to-mid RPM torque
- Mandrel Bent Tubing — Consistent tube diameter through every bend; no crimping, no restriction
- CNC Machined Flanges — Precision fit at the head and collector for a leak-free seal
- 304 Natural Stainless Steel Construction — Corrosion resistant, heat tolerant, and built to last
- Clears Factory Oil Cooler — Engineered for the G8, SS Sedan, and Caprice PPV layouts
- Longtube Header Design — Maximum scavenging efficiency vs. shorty or mid-length headers
- Standard Graphite Manifold Gaskets Included
- Dyno Proven — 25+ RWHP gain on 6.0L and 6.2L LS applications
- Compatible with 6.0L LS2/L76/L77 and 6.2L LS3 Engines
Vehicle Applications:
Pontiac G8 — LS2/LS3
- 2008 Pontiac G8 GT (RWD) — 6.0L L76
- 2009 Pontiac G8 GT (RWD) — 6.0L L76
- 2009 Pontiac G8 GXP (RWD) — 6.2L LS3
Chevrolet SS Sedan — 6.2L LS3
- 2014 Chevrolet SS Sedan (RWD) — 6.2L LS3
- 2015 Chevrolet SS Sedan (RWD) — 6.2L LS3
- 2016 Chevrolet SS Sedan (RWD) — 6.2L LS3
- 2017 Chevrolet SS Sedan (RWD) — 6.2L LS3
Chevrolet Caprice PPV — 6.0L L77
- 2011 Chevrolet Caprice PPV (RWD) — 6.0L L77
- 2012 Chevrolet Caprice PPV (RWD) — 6.0L L77
- 2013 Chevrolet Caprice PPV (RWD) — 6.0L L77
- 2014 Chevrolet Caprice PPV (RWD) — 6.0L L77
- 2015 Chevrolet Caprice PPV (RWD) — 6.0L L77
- 2016 Chevrolet Caprice PPV (RWD) — 6.0L L77
- 2017 Chevrolet Caprice PPV (RWD) — 6.0L L77
FAQ
Do these headers include an X-pipe or any additional components?
These are headers only. The Speed Engineering X-pipe kit and full kit options are sold separately.
Do these headers clear the factory oil cooler?
Yes. These headers are specifically engineered to clear the factory oil cooler on G8, SS Sedan, and Caprice PPV applications.
Do Caprice PPV applications require any special modifications?
Yes. X-pipe and true dual exhaust setup will require modifications at the axle-back flange for installation on Caprice PPV applications.
Which G8 models have the LS2 and which have the LS3?
The 2008–2009 G8 GT came with the 6.0L L76 (LS2-based). The 2009 G8 GXP came with the 6.2L LS3. These headers are compatible with both.
What engines are compatible with these headers?
These headers are compatible with the 6.0L L76/L77 found in the 2008–2009 G8 GT and 2011–2017 Caprice PPV, and the 6.2L LS3 found in the 2009 G8 GXP and 2014–2017 SS Sedan.
How much horsepower do these headers add?
Speed Engineering's 2" longtube headers are dyno proven to add over 25 rear-wheel horsepower on these platforms compared to stock exhaust manifolds.
What material are these headers made from?
304 natural stainless steel with full TIG-welded construction, CNC-machined flanges, and collector spikes.
Are gaskets included?
Yes. Standard graphite manifold gaskets are included.
Are these headers street legal?
No. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).
⚠️ Race Use Only: This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).