Dropping an LS into your classic Camaro, Chevelle, Nova, GTO, or any number of popular GM A-body and F-body platforms? Speed Engineering's 1-7/8" LS swap longtube headers are engineered across the most popular classic GM chassis — mandrel bent, TIG-welded, and CNC-machined from 304 natural stainless steel with a merge spike and standard graphite manifold gaskets included. Compatible with the full LS engine family from 4.8L through 6.2L including LS1, LS2, LS3, LS6, and LSA.
⚠️ Important Installation Notes:
- A-body chassis only — confirm your vehicle is on the A-body chassis before ordering. Some model names (El Camino, Monte Carlo, Grand Prix, Cutlass) also came in G-body applications in certain years. These headers will have fitment issues on a G-body application
- LS swap applications only — these headers are NOT compatible with standard SBC or BBC engines
- Due to older vehicle frame clearance, headers fit very tight and require Speed Engineering spark plug wires
- 4L80E or older Turbo 350/400 transmission — bellhousing ears may need to be trimmed for proper clearance
- Note: Installed photos show 1-7/8" headers with 1" offset back motor mounts
Features:
- Full 1-7/8" Primary Tubes with Merge Spike — Maximum flow from cylinder head to collector for aggressive LS swap 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 cylinder head 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
- Standard Graphite Manifold Gaskets Included
- Dyno Proven
- Compatible with 4.8L, 5.3L, 6.0L, 6.2L, LS1, LS2, LS3, LS6, and LSA Engines
- V8 LS Engines Only
Vehicle Applications:
Note: All applications listed are LS swap conversions. These headers are not compatible with the original factory engines in these vehicles. A-body chassis only — will NOT fit G-body applications.
GM F-Body (RWD) — LS Swap
Chevrolet Camaro
- 1970 Chevrolet Camaro (RWD) — LS Swap
- 1971 Chevrolet Camaro (RWD) — LS Swap
- 1972 Chevrolet Camaro (RWD) — LS Swap
- 1973 Chevrolet Camaro (RWD) — LS Swap
- 1974 Chevrolet Camaro (RWD) — LS Swap
- 1975 Chevrolet Camaro (RWD) — LS Swap
- 1976 Chevrolet Camaro (RWD) — LS Swap
- 1977 Chevrolet Camaro (RWD) — LS Swap
- 1978 Chevrolet Camaro (RWD) — LS Swap
- 1979 Chevrolet Camaro (RWD) — LS Swap
- 1980 Chevrolet Camaro (RWD) — LS Swap
- 1981 Chevrolet Camaro (RWD) — LS Swap
Pontiac Firebird
- 1970 Pontiac Firebird (RWD) — LS Swap
- 1971 Pontiac Firebird (RWD) — LS Swap
- 1972 Pontiac Firebird (RWD) — LS Swap
- 1973 Pontiac Firebird (RWD) — LS Swap
- 1974 Pontiac Firebird (RWD) — LS Swap
- 1975 Pontiac Firebird (RWD) — LS Swap
- 1976 Pontiac Firebird (RWD) — LS Swap
- 1977 Pontiac Firebird (RWD) — LS Swap
- 1978 Pontiac Firebird (RWD) — LS Swap
- 1979 Pontiac Firebird (RWD) — LS Swap
- 1980 Pontiac Firebird (RWD) — LS Swap
- 1981 Pontiac Firebird (RWD) — LS Swap
GM A-Body (RWD) — LS Swap
Chevrolet Chevelle
- 1964 Chevrolet Chevelle (RWD) — LS Swap
- 1965 Chevrolet Chevelle (RWD) — LS Swap
- 1966 Chevrolet Chevelle (RWD) — LS Swap
- 1967 Chevrolet Chevelle (RWD) — LS Swap
- 1968 Chevrolet Chevelle (RWD) — LS Swap
- 1969 Chevrolet Chevelle (RWD) — LS Swap
- 1970 Chevrolet Chevelle (RWD) — LS Swap
- 1971 Chevrolet Chevelle (RWD) — LS Swap
- 1972 Chevrolet Chevelle (RWD) — LS Swap
- 1973 Chevrolet Chevelle (RWD) — LS Swap
- 1974 Chevrolet Chevelle (RWD) — LS Swap
- 1975 Chevrolet Chevelle (RWD) — LS Swap
- 1976 Chevrolet Chevelle (RWD) — LS Swap
- 1977 Chevrolet Chevelle (RWD) — LS Swap
Chevrolet El Camino
- 1964 Chevrolet El Camino (RWD) — LS Swap ⚠️ A-body chassis only
- 1965 Chevrolet El Camino (RWD) — LS Swap ⚠️ A-body chassis only
- 1966 Chevrolet El Camino (RWD) — LS Swap ⚠️ A-body chassis only
- 1967 Chevrolet El Camino (RWD) — LS Swap ⚠️ A-body chassis only
- 1968 Chevrolet El Camino (RWD) — LS Swap ⚠️ A-body chassis only
- 1969 Chevrolet El Camino (RWD) — LS Swap ⚠️ A-body chassis only
- 1970 Chevrolet El Camino (RWD) — LS Swap ⚠️ A-body chassis only
- 1971 Chevrolet El Camino (RWD) — LS Swap ⚠️ A-body chassis only
- 1972 Chevrolet El Camino (RWD) — LS Swap ⚠️ A-body chassis only
- 1973 Chevrolet El Camino (RWD) — LS Swap ⚠️ A-body chassis only
- 1974 Chevrolet El Camino (RWD) — LS Swap ⚠️ A-body chassis only
- 1975 Chevrolet El Camino (RWD) — LS Swap ⚠️ A-body chassis only
- 1976 Chevrolet El Camino (RWD) — LS Swap ⚠️ A-body chassis only
- 1977 Chevrolet El Camino (RWD) — LS Swap ⚠️ A-body chassis only
- 1978 Chevrolet El Camino (RWD) — LS Swap ⚠️ A-body chassis only
- 1979 Chevrolet El Camino (RWD) — LS Swap ⚠️ A-body chassis only
- 1980 Chevrolet El Camino (RWD) — LS Swap ⚠️ A-body chassis only
- 1981 Chevrolet El Camino (RWD) — LS Swap ⚠️ A-body chassis only
Chevrolet Monte Carlo
- 1970 Chevrolet Monte Carlo (RWD) — LS Swap ⚠️ A-body chassis only
- 1971 Chevrolet Monte Carlo (RWD) — LS Swap ⚠️ A-body chassis only
- 1972 Chevrolet Monte Carlo (RWD) — LS Swap ⚠️ A-body chassis only
- 1973 Chevrolet Monte Carlo (RWD) — LS Swap ⚠️ A-body chassis only
- 1974 Chevrolet Monte Carlo (RWD) — LS Swap ⚠️ A-body chassis only
- 1975 Chevrolet Monte Carlo (RWD) — LS Swap ⚠️ A-body chassis only
- 1976 Chevrolet Monte Carlo (RWD) — LS Swap ⚠️ A-body chassis only
- 1977 Chevrolet Monte Carlo (RWD) — LS Swap ⚠️ A-body chassis only
- 1978 Chevrolet Monte Carlo (RWD) — LS Swap ⚠️ A-body chassis only
- 1979 Chevrolet Monte Carlo (RWD) — LS Swap ⚠️ A-body chassis only
- 1980 Chevrolet Monte Carlo (RWD) — LS Swap ⚠️ A-body chassis only
- 1981 Chevrolet Monte Carlo (RWD) — LS Swap ⚠️ A-body chassis only
Pontiac GTO
- 1964 Pontiac GTO (RWD) — LS Swap
- 1965 Pontiac GTO (RWD) — LS Swap
- 1966 Pontiac GTO (RWD) — LS Swap
- 1967 Pontiac GTO (RWD) — LS Swap
- 1968 Pontiac GTO (RWD) — LS Swap
- 1969 Pontiac GTO (RWD) — LS Swap
- 1970 Pontiac GTO (RWD) — LS Swap
- 1971 Pontiac GTO (RWD) — LS Swap
- 1972 Pontiac GTO (RWD) — LS Swap
Pontiac LeMans
- 1964 Pontiac LeMans (RWD) — LS Swap
- 1965 Pontiac LeMans (RWD) — LS Swap
- 1966 Pontiac LeMans (RWD) — LS Swap
- 1967 Pontiac LeMans (RWD) — LS Swap
- 1968 Pontiac LeMans (RWD) — LS Swap
- 1969 Pontiac LeMans (RWD) — LS Swap
- 1970 Pontiac LeMans (RWD) — LS Swap
- 1971 Pontiac LeMans (RWD) — LS Swap
- 1972 Pontiac LeMans (RWD) — LS Swap
- 1973 Pontiac LeMans (RWD) — LS Swap
- 1974 Pontiac LeMans (RWD) — LS Swap
- 1975 Pontiac LeMans (RWD) — LS Swap
- 1976 Pontiac LeMans (RWD) — LS Swap
- 1977 Pontiac LeMans (RWD) — LS Swap
- 1978 Pontiac LeMans (RWD) — LS Swap
- 1979 Pontiac LeMans (RWD) — LS Swap
- 1980 Pontiac LeMans (RWD) — LS Swap
- 1981 Pontiac LeMans (RWD) — LS Swap
Pontiac Grand Prix
- 1977 Pontiac Grand Prix (RWD) — LS Swap ⚠️ A-body chassis only
- 1978 Pontiac Grand Prix (RWD) — LS Swap ⚠️ A-body chassis only
- 1979 Pontiac Grand Prix (RWD) — LS Swap ⚠️ A-body chassis only
- 1980 Pontiac Grand Prix (RWD) — LS Swap ⚠️ A-body chassis only
- 1981 Pontiac Grand Prix (RWD) — LS Swap ⚠️ A-body chassis only
Oldsmobile Cutlass
- 1964 Oldsmobile Cutlass (RWD) — LS Swap ⚠️ A-body chassis only
- 1965 Oldsmobile Cutlass (RWD) — LS Swap ⚠️ A-body chassis only
- 1966 Oldsmobile Cutlass (RWD) — LS Swap ⚠️ A-body chassis only
- 1967 Oldsmobile Cutlass (RWD) — LS Swap ⚠️ A-body chassis only
- 1968 Oldsmobile Cutlass (RWD) — LS Swap ⚠️ A-body chassis only
- 1969 Oldsmobile Cutlass (RWD) — LS Swap ⚠️ A-body chassis only
- 1970 Oldsmobile Cutlass (RWD) — LS Swap ⚠️ A-body chassis only
- 1971 Oldsmobile Cutlass (RWD) — LS Swap ⚠️ A-body chassis only
- 1972 Oldsmobile Cutlass (RWD) — LS Swap ⚠️ A-body chassis only
- 1973 Oldsmobile Cutlass (RWD) — LS Swap ⚠️ A-body chassis only
- 1974 Oldsmobile Cutlass (RWD) — LS Swap ⚠️ A-body chassis only
- 1975 Oldsmobile Cutlass (RWD) — LS Swap ⚠️ A-body chassis only
- 1976 Oldsmobile Cutlass (RWD) — LS Swap ⚠️ A-body chassis only
- 1977 Oldsmobile Cutlass (RWD) — LS Swap ⚠️ A-body chassis only
Buick Skylark
- 1964 Buick Skylark (RWD) — LS Swap
- 1965 Buick Skylark (RWD) — LS Swap
- 1966 Buick Skylark (RWD) — LS Swap
- 1967 Buick Skylark (RWD) — LS Swap
- 1968 Buick Skylark (RWD) — LS Swap
- 1969 Buick Skylark (RWD) — LS Swap
- 1970 Buick Skylark (RWD) — LS Swap
- 1971 Buick Skylark (RWD) — LS Swap
- 1972 Buick Skylark (RWD) — LS Swap
Buick Grand National
- 1978 Buick Grand National (RWD) — LS Swap ⚠️ A-body chassis only
- 1979 Buick Grand National (RWD) — LS Swap ⚠️ A-body chassis only
- 1980 Buick Grand National (RWD) — LS Swap ⚠️ A-body chassis only
- 1981 Buick Grand National (RWD) — LS Swap ⚠️ A-body chassis only
GM X-Body (RWD) — LS Swap
Chevrolet Nova
- 1975 Chevrolet Nova (RWD) — LS Swap
- 1976 Chevrolet Nova (RWD) — LS Swap
- 1977 Chevrolet Nova (RWD) — LS Swap
- 1978 Chevrolet Nova (RWD) — LS Swap
- 1979 Chevrolet Nova (RWD) — LS Swap
Frequently Asked Questions:
Q: How do I know if my vehicle is an A-body or G-body? This is an important distinction. The A-body and G-body share several model names across different years. Generally, Chevelles, El Caminos (1964–1977), GTOs (1964–1972), and early Monte Carlos (1970–1977) are A-body. Later Monte Carlos (1978–1988), El Caminos (1978–1987), and Grand Prix (1978+) transitioned to the G-body platform. If you're unsure, verify your chassis code before ordering as these headers will have fitment issues on G-body applications.
Q: Will these headers work with my SBC or BBC engine? No. These headers are designed for LS series engine swaps only and are not compatible with standard small block Chevy or big block Chevy engines.
Q: Do I need special spark plug wires? Yes. Due to tight frame clearance on older classic GM platforms, Speed Engineering spark plug wires are required for proper fitment with these headers.
Q: Will these fit with a 4L80E or older Turbo 350/400 transmission? These headers may require trimming of the bellhousing ears on 4L80E or older Turbo 350/400 transmissions for proper clearance.
Q: What is the difference between these 1-7/8" headers and the 1-3/4" LS swap multi-platform headers (25-1066)? The primary tube diameter is the key difference. The 1-7/8" headers offer a step up in flow for more aggressive builds with supporting modifications. The 1-3/4" headers are a strong choice for most LS swap builds across a broad RPM range. Both cover similar classic GM platforms.
Q: What LS engines are these headers compatible with? These headers are compatible with GM LS V8 engines including 4.8L, 5.3L, 6.0L, 6.2L, LS1, LS2, LS3, LS6, and LSA.
Q: What material are these headers made from? 304 natural stainless steel with full TIG-welded construction, CNC-machined flanges, and a merge spike.
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).
