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
Frequently Asked Questions:
Q: 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.
Q: 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.
Q: 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.
Q: 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.
Q: 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.
Q: 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.
Q: What material are these headers made from? 304 natural stainless steel with full TIG-welded construction, CNC-machined flanges, and collector spikes.
Q: Are gaskets included? Yes. Standard graphite manifold gaskets are included.
Q: 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).
