The factory exhaust manifolds on your 4th Gen Camaro or Firebird are one of the first restrictions holding back your LS1. Speed Engineering's 1-7/8" longtube headers are a direct-fit, dyno-proven upgrade — mandrel bent, TIG-welded, and CNC-machined from 304 natural stainless steel with merge spikes and full port-matched construction. Delivers over 25 rear-wheel horsepower over stock manifolds.
Note: These headers also work on 1993–1997 Camaro and Firebird applications equipped with an LS swap conversion.
Features:
- Full 1-7/8" Primary Tubes with Merge Spikes — Maximum flow from cylinder head to collector for aggressive LS1 performance
- 3" Collector — Optimized 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
- Longtube Header Design — Maximum scavenging efficiency vs. shorty or mid-length headers
- Dyno Proven — 25+ RWHP gain on LS1 applications
- Compatible with 5.7L LS1 Engines
Vehicle Applications:
Chevrolet Camaro — LS1 5.7L (4th Gen F-Body)
- 1998 Chevrolet Camaro — 5.7L LS1
- 1999 Chevrolet Camaro — 5.7L LS1
- 2000 Chevrolet Camaro — 5.7L LS1
- 2001 Chevrolet Camaro — 5.7L LS1
- 2002 Chevrolet Camaro — 5.7L LS1
Pontiac Firebird & Trans Am — LS1 5.7L (4th Gen F-Body)
- 1998 Pontiac Firebird/Trans Am — 5.7L LS1
- 1999 Pontiac Firebird/Trans Am — 5.7L LS1
- 2000 Pontiac Firebird/Trans Am — 5.7L LS1
- 2001 Pontiac Firebird/Trans Am — 5.7L LS1
- 2002 Pontiac Firebird/Trans Am — 5.7L LS1
Note: Also fits 1993–1997 Camaro and Firebird applications with an LS swap conversion.
FAQ
What is the difference between these headers and the 1-3/4" full kit (25-1010)?
Two differences: these are headers only — no Y-pipe or additional kit components are included — and the primary tube diameter is 1-7/8" vs 1-3/4". The 1-7/8" headers offer a step up in flow for more aggressive builds with supporting modifications. Choose the full kit for an all-in-one purchase or these headers if you already have an exhaust system in place.
Will these headers work on a 1993–1997 3rd Gen Camaro or Firebird?
Yes, with an LS swap conversion. These headers are confirmed to work on 1993–1997 Camaro and Firebird applications equipped with an LS engine swap.
How much horsepower do these headers add?
Speed Engineering's 1-7/8" longtube headers are dyno proven to add over 25 rear-wheel horsepower on 1998–2002 Camaro and Firebird LS1 applications 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 merge spikes.
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).