Ready to give your square body C10 a proper true dual exhaust system to match your LS or LT swap? Speed Engineering's axle exit true dual exhaust kit is built specifically for the 1973–1987 C10 platform — 3" mandrel bent 304 natural stainless steel with a true dual X-pipe design, insulated bullet style blow-through mufflers, 3" stainless band clamps, and an adjustable transmission crossmember included for proper fitment clearance. Designed to work with Speed Engineering LS and LT C10 longtube headers.
⚠️ Important Installation Notes:
- Designed to work with Speed Engineering LS & LT C10 1-3/4" and 1-7/8" longtube headers only — part numbers 25-1025, 25-1026, and 25-1058. NOT designed to work with SBC or BBC headers
- Transmission crossmember was prototyped using a 4L60E transmission with the engine in a 1" offset back location. Depending on your transmission and engine offset location, some frame drilling or minor fabrication may be required
Features:
- 3" Mandrel Bent Tubing — Consistent diameter throughout for maximum exhaust flow
- True Dual X-Pipe Design — Balances exhaust pulses between banks for improved tone and mid-range power
- Axle Exit Design — Clean, tucked exit at the rear axle
- Insulated Bullet Style Blow-Through Mufflers — Deep, aggressive exhaust tone with straight-through flow
- Adjustable Transmission Crossmember Included — Engineered for proper exhaust clearance on LS/LT C10 swap configurations
- 3" Stainless Band Clamps Included
- 304 Natural Stainless Steel Construction — Corrosion resistant, heat tolerant, and built to last
- Compatible with LS and LT Engine Swaps
- V8 Engines Only
- Dyno Proven
Vehicle Applications:
Chevrolet C10 Pickup — Square Body (RWD) — LS/LT Swap
- 1973 Chevrolet C10 Pickup (RWD) — LS/LT Swap
- 1974 Chevrolet C10 Pickup (RWD) — LS/LT Swap
- 1975 Chevrolet C10 Pickup (RWD) — LS/LT Swap
- 1976 Chevrolet C10 Pickup (RWD) — LS/LT Swap
- 1977 Chevrolet C10 Pickup (RWD) — LS/LT Swap
- 1978 Chevrolet C10 Pickup (RWD) — LS/LT Swap
- 1979 Chevrolet C10 Pickup (RWD) — LS/LT Swap
- 1980 Chevrolet C10 Pickup (RWD) — LS/LT Swap
- 1981 Chevrolet C10 Pickup (RWD) — LS/LT Swap
- 1982 Chevrolet C10 Pickup (RWD) — LS/LT Swap
- 1983 Chevrolet C10 Pickup (RWD) — LS/LT Swap
- 1984 Chevrolet C10 Pickup (RWD) — LS/LT Swap
- 1985 Chevrolet C10 Pickup (RWD) — LS/LT Swap
- 1986 Chevrolet C10 Pickup (RWD) — LS/LT Swap
- 1987 Chevrolet C10 Pickup (RWD) — LS/LT Swap
FAQ
What headers does this exhaust system require?
This system is designed to work with Speed Engineering LS and LT C10 1-3/4" and 1-7/8" longtube headers only — specifically part numbers 25-1025 (LS 1-3/4"), 25-1026 (LS 1-7/8"), and 25-1058 (LT). It is not compatible with SBC or BBC headers of any kind.
What is the transmission crossmember for?
The included adjustable transmission crossmember is designed to provide proper clearance for the exhaust system routing on LS/LT C10 swap configurations. It was prototyped using a 4L60E transmission with the engine in a 1" offset back location. Depending on your specific transmission and engine offset, some frame drilling or minor fabrication may be required.
What mufflers does this system use?
Insulated bullet style blow-through mufflers for a deep, aggressive exhaust tone with straight-through flow design.
What size tubing does this system use?
All tubing is 3" diameter, mandrel bent for consistent flow throughout. 3" stainless band clamps are included.
Is this the same system as the 1963–1972 C10 true dual axle exit (25-1174)?
No. Part 25-1060 is designed specifically for the 1973–1987 square body C10 generation. Part 25-1174 is designed for the 1963–1972 generation. Each system is engineered for the chassis-specific routing of its respective C10 body generation.
What material is this exhaust system made from?
304 natural stainless steel with mandrel-bent tubing and TIG-welded construction. 3" stainless band clamps are included.
Is this exhaust system street legal?
No. This is a race-only product 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).
