• Speed Engineering LT swap shorty headers Camaro Chevelle Nova C10 K10 OBS LT1 LT4 stainless exhaust headers
    • Speed Engineering LT swap shorty headers Camaro Chevelle Nova C10 K10 OBS LT1 LT4 stainless exhaust headers

    Speed Engineering LT Swap 1-5/8" Shorty Headers — Camaro, Chevelle, Nova, C10/K10 & OBS C1500/K1500 | Gen V LT1/LT4 | 25-1057

    Vendor: Speed Engineering
    SKU: 25-1057
    $229.99
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    • Speed Engineering LT swap shorty headers Camaro Chevelle Nova C10 K10 OBS LT1 LT4 stainless exhaust headers
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    Need an LT swap header that delivers solid performance and fits tight in narrow classic GM engine bays without the complexity of longtubes? Speed Engineering's 1-5/8" LT swap shorty headers are engineered with features that set them apart from the competition — V-band collector construction, merge spikes, and port-matched flanges combine with improved header-to-block and header-to-chassis clearance for a cleaner, better-fitting install across the most popular classic GM platforms including Camaro, Firebird, Chevelle, Nova, C10, K10, and OBS C1500/K1500. Compatible with Gen V LT1 and LT4 engines (5.3L and 6.2L, 2014+). Dyno proven to deliver over 18 rear-wheel horsepower over stock manifolds.

    Built from 304 natural stainless steel with mandrel-bent primary tubes, CNC-machined flanges, and full TIG-welded construction. Standard graphite manifold gaskets included.

    ⚠️ Important Installation Notes:

    • Gen V LT direct injection engine swaps only — these headers are NOT compatible with SBC or BBC engines
    • 4L80E or older Turbo 350/400 transmission — bellhousing ears may need to be trimmed for proper clearance due to tight fitment on narrow older frames
    • 1968–1974 Nova and early 1960s Chevelle applications require an aftermarket steering shaft
    • Compatible with 6, 8, and 10 speed automatic transmissions

    Features:

    • Full 1-5/8" Port-Matched Primary Tubes — Full-diameter flow from cylinder head to collector for maximum scavenging on LT swap applications
    • 2.5" V-Band Collector with Merge Spikes — V-band construction for a secure, leak-free collector connection; merge spikes for optimized exhaust scavenging
    • Port-Matched Flanges — Precise alignment at the cylinder head for a leak-free seal and maximum flow
    • Improved Header-to-Block and Chassis Clearance — Engineered to tuck tighter than competitor shorty headers on narrow classic GM frames
    • Shorty Header Design — Compact and fitment-friendly profile ideal for builds where longtube routing is a challenge
    • Mandrel Bent Tubing — Consistent tube diameter throughout; no crimping, no restriction
    • CNC Machined Flanges — Precision-fit at the cylinder head
    • 304 Natural Stainless Steel Construction — Corrosion resistant, heat tolerant, and built to last
    • Standard Graphite Manifold Gaskets Included
    • Dyno Proven — 18+ RWHP gain on LT swap applications
    • Compatible with 5.3L and 6.2L LT1 and LT4 Engines (2014+)
    • V8 LT Engines Only

    Vehicle Applications:

    Note: All applications listed are Gen V LT direct injection swap conversions. These headers are not compatible with the original factory engines in these vehicles.

    GM F-Body (RWD) — LT Swap

    Chevrolet Camaro

    • 1967 Chevrolet Camaro (RWD) — LT Swap
    • 1968 Chevrolet Camaro (RWD) — LT Swap
    • 1969 Chevrolet Camaro (RWD) — LT Swap
    • 1970 Chevrolet Camaro (RWD) — LT Swap
    • 1971 Chevrolet Camaro (RWD) — LT Swap
    • 1972 Chevrolet Camaro (RWD) — LT Swap
    • 1973 Chevrolet Camaro (RWD) — LT Swap
    • 1974 Chevrolet Camaro (RWD) — LT Swap
    • 1975 Chevrolet Camaro (RWD) — LT Swap
    • 1976 Chevrolet Camaro (RWD) — LT Swap
    • 1977 Chevrolet Camaro (RWD) — LT Swap
    • 1978 Chevrolet Camaro (RWD) — LT Swap
    • 1979 Chevrolet Camaro (RWD) — LT Swap
    • 1980 Chevrolet Camaro (RWD) — LT Swap
    • 1981 Chevrolet Camaro (RWD) — LT Swap

    Pontiac Firebird

    • 1967 Pontiac Firebird (RWD) — LT Swap
    • 1968 Pontiac Firebird (RWD) — LT Swap
    • 1969 Pontiac Firebird (RWD) — LT Swap
    • 1970 Pontiac Firebird (RWD) — LT Swap
    • 1971 Pontiac Firebird (RWD) — LT Swap
    • 1972 Pontiac Firebird (RWD) — LT Swap
    • 1973 Pontiac Firebird (RWD) — LT Swap
    • 1974 Pontiac Firebird (RWD) — LT Swap
    • 1975 Pontiac Firebird (RWD) — LT Swap
    • 1976 Pontiac Firebird (RWD) — LT Swap
    • 1977 Pontiac Firebird (RWD) — LT Swap
    • 1978 Pontiac Firebird (RWD) — LT Swap
    • 1979 Pontiac Firebird (RWD) — LT Swap
    • 1980 Pontiac Firebird (RWD) — LT Swap
    • 1981 Pontiac Firebird (RWD) — LT Swap

    Chevrolet Nova — X-Body (RWD) — LT Swap

    • 1968 Chevrolet Nova (RWD) — LT Swap
    • 1969 Chevrolet Nova (RWD) — LT Swap
    • 1970 Chevrolet Nova (RWD) — LT Swap
    • 1971 Chevrolet Nova (RWD) — LT Swap
    • 1972 Chevrolet Nova (RWD) — LT Swap
    • 1973 Chevrolet Nova (RWD) — LT Swap
    • 1974 Chevrolet Nova (RWD) — LT Swap

    ⚠️ Early 1960s Nova applications require an aftermarket steering shaft.

    Chevrolet Chevelle — A-Body (RWD) — LT Swap

    • 1968 Chevrolet Chevelle (RWD) — LT Swap
    • 1969 Chevrolet Chevelle (RWD) — LT Swap
    • 1970 Chevrolet Chevelle (RWD) — LT Swap
    • 1971 Chevrolet Chevelle (RWD) — LT Swap
    • 1972 Chevrolet Chevelle (RWD) — LT Swap

    ⚠️ Early 1960s Chevelle applications require an aftermarket steering shaft.

    Chevrolet & GMC C10/K10 Pickups & Panels (2WD/4WD) — LT Swap

    • 1960 Chevrolet/GMC C10/K10 Pickup/Panel (2WD/4WD) — LT Swap
    • 1961 Chevrolet/GMC C10/K10 Pickup/Panel (2WD/4WD) — LT Swap
    • 1962 Chevrolet/GMC C10/K10 Pickup/Panel (2WD/4WD) — LT Swap
    • 1963 Chevrolet/GMC C10/K10 Pickup/Panel (2WD/4WD) — LT Swap
    • 1964 Chevrolet/GMC C10/K10 Pickup/Panel (2WD/4WD) — LT Swap
    • 1965 Chevrolet/GMC C10/K10 Pickup/Panel (2WD/4WD) — LT Swap
    • 1966 Chevrolet/GMC C10/K10 Pickup/Panel (2WD/4WD) — LT Swap
    • 1967 Chevrolet/GMC C10/K10 Pickup/Panel (2WD/4WD) — LT Swap
    • 1968 Chevrolet/GMC C10/K10 Pickup/Panel (2WD/4WD) — LT Swap
    • 1969 Chevrolet/GMC C10/K10 Pickup/Panel (2WD/4WD) — LT Swap
    • 1970 Chevrolet/GMC C10/K10 Pickup/Panel (2WD/4WD) — LT Swap
    • 1971 Chevrolet/GMC C10/K10 Pickup/Panel (2WD/4WD) — LT Swap
    • 1972 Chevrolet/GMC C10/K10 Pickup/Panel (2WD/4WD) — LT Swap
    • 1973 Chevrolet/GMC C10/K10 Pickup/Panel (2WD/4WD) — LT Swap
    • 1974 Chevrolet/GMC C10/K10 Pickup/Panel (2WD/4WD) — LT Swap
    • 1975 Chevrolet/GMC C10/K10 Pickup/Panel (2WD/4WD) — LT Swap
    • 1976 Chevrolet/GMC C10/K10 Pickup/Panel (2WD/4WD) — LT Swap
    • 1977 Chevrolet/GMC C10/K10 Pickup/Panel (2WD/4WD) — LT Swap
    • 1978 Chevrolet/GMC C10/K10 Pickup/Panel (2WD/4WD) — LT Swap
    • 1979 Chevrolet/GMC C10/K10 Pickup/Panel (2WD/4WD) — LT Swap
    • 1980 Chevrolet/GMC C10/K10 Pickup/Panel (2WD/4WD) — LT Swap
    • 1981 Chevrolet/GMC C10/K10 Pickup/Panel (2WD/4WD) — LT Swap
    • 1982 Chevrolet/GMC C10/K10 Pickup/Panel (2WD/4WD) — LT Swap
    • 1983 Chevrolet/GMC C10/K10 Pickup/Panel (2WD/4WD) — LT Swap
    • 1984 Chevrolet/GMC C10/K10 Pickup/Panel (2WD/4WD) — LT Swap
    • 1985 Chevrolet/GMC C10/K10 Pickup/Panel (2WD/4WD) — LT Swap
    • 1986 Chevrolet/GMC C10/K10 Pickup/Panel (2WD/4WD) — LT Swap
    • 1987 Chevrolet/GMC C10/K10 Pickup/Panel (2WD/4WD) — LT Swap

    Chevrolet & GMC C1500/K1500 OBS Truck (2WD/4WD) — LT Swap

    • 1989 Chevrolet/GMC C1500/K1500 (2WD/4WD) — LT Swap
    • 1990 Chevrolet/GMC C1500/K1500 (2WD/4WD) — LT Swap
    • 1991 Chevrolet/GMC C1500/K1500 (2WD/4WD) — LT Swap
    • 1992 Chevrolet/GMC C1500/K1500 (2WD/4WD) — LT Swap
    • 1993 Chevrolet/GMC C1500/K1500 (2WD/4WD) — LT Swap
    • 1994 Chevrolet/GMC C1500/K1500 (2WD/4WD) — LT Swap
    • 1995 Chevrolet/GMC C1500/K1500 (2WD/4WD) — LT Swap
    • 1996 Chevrolet/GMC C1500/K1500 (2WD/4WD) — LT Swap
    • 1997 Chevrolet/GMC C1500/K1500 (2WD/4WD) — LT Swap
    • 1998 Chevrolet/GMC C1500/K1500 (2WD/4WD) — LT Swap
    • 1999 Chevrolet/GMC C1500/K1500 (2WD/4WD) — LT Swap

    Frequently Asked Questions:

    Q: What makes these LT swap shorty headers better than other options? Speed Engineering's 1-5/8" LT swap shorty headers use V-band collector construction, merge spikes, and port-matched flanges — features not commonly found on budget competitor shorty headers. They're also engineered with improved header-to-block and chassis clearance for better fitment on narrow classic GM frames.

    Q: What is the difference between these headers and the LS swap shorty headers (25-1021)? The key difference is the engine family. Part 25-1057 is for Gen V LT direct injection engine swaps only (LT1/LT4, 2014+). Part 25-1021 is for GM LS engine swaps. Both cover the same classic GM platforms and feature the same V-band collector and merge spike design.

    Q: Will these headers work with my SBC or BBC engine? No. These headers are designed for Gen V LT direct injection engine swaps only and are not compatible with SBC or BBC engines.

    Q: Do early 1960s Nova and Chevelle applications require any additional parts? Yes. Early 1960s Nova and Chevelle applications require an aftermarket steering shaft for proper fitment.

    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. They are confirmed to fit 6, 8, and 10 speed automatic transmissions without modification.

    Q: What LT engines are these headers compatible with? These headers are compatible with Gen V LT V8 engines including 5.3L and 6.2L LT1 and LT4 (2014 and newer).

    Q: What material are these headers made from? 304 natural stainless steel with full TIG-welded construction, CNC-machined flanges, merge spikes, and port-matched flanges.

    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).

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