• Speed Engineering LT swap 1-7/8 longtube headers A body F body X body LT1 LT4 stainless exhaust conversion
    • Speed Engineering LT swap 1-7/8 longtube headers A body F body X body LT1 LT4 stainless exhaust conversion

    Speed Engineering 1-7/8" LT Swap Longtube Headers — A-Body, F-Body & X-Body | Gen V LT1/LT4 5.3L/6.2L | 25-1058

    Vendor: Speed Engineering
    5.0' (1 Reviews)
    SKU: 25-1058
    $329.99
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    • Speed Engineering LT swap 1-7/8 longtube headers A body F body X body LT1 LT4 stainless exhaust conversion
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    Dropping a Gen V LT engine into your classic Camaro, Chevelle, Nova, or other classic GM platform? Speed Engineering's 1-7/8" LT swap longtube headers are built specifically for these applications — mandrel bent, TIG-welded, and CNC-machined for a precise fit across the most popular classic GM LT conversion platforms. Compatible with 5.3L and 6.2L LT1 and LT4 engines. Dyno proven and built from 304 natural stainless steel with a merge spike and 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
    • Confirm your vehicle is an A-body chassis before purchasing — some models were also produced in G-body applications and will have fitment issues on a G-body platform
    • Due to older vehicle frame clearance, headers fit very tight and require Speed Engineering LT spark plug wires
    • LT4 engines may require an oil cooler adapter or delete kit
    • 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:

    • 1-7/8" Primary Tubes with Merge Spike — Full-diameter flow from cylinder head to collector for maximum exhaust scavenging
    • 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 5.3L, 6.2L, LT1, and LT4 Engines
    • V8 LT Engines Only

    Vehicle Applications:

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

    Chevrolet Camaro — F-Body (RWD)

    • 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 — F-Body (RWD)

    • 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 Chevelle — A-Body (RWD)

    • 1964 Chevrolet Chevelle (RWD) — LT Swap
    • 1965 Chevrolet Chevelle (RWD) — LT Swap
    • 1966 Chevrolet Chevelle (RWD) — LT Swap
    • 1967 Chevrolet Chevelle (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
    • 1973 Chevrolet Chevelle (RWD) — LT Swap
    • 1974 Chevrolet Chevelle (RWD) — LT Swap
    • 1975 Chevrolet Chevelle (RWD) — LT Swap
    • 1976 Chevrolet Chevelle (RWD) — LT Swap
    • 1977 Chevrolet Chevelle (RWD) — LT Swap

    Chevrolet Nova — X-Body (RWD)

    • 1975 Chevrolet Nova (RWD) — LT Swap
    • 1976 Chevrolet Nova (RWD) — LT Swap
    • 1977 Chevrolet Nova (RWD) — LT Swap
    • 1978 Chevrolet Nova (RWD) — LT Swap
    • 1979 Chevrolet Nova (RWD) — LT Swap

    Chevrolet El Camino — A-Body (RWD)

    • 1964 Chevrolet El Camino (RWD) — LT Swap
    • 1965 Chevrolet El Camino (RWD) — LT Swap
    • 1966 Chevrolet El Camino (RWD) — LT Swap
    • 1967 Chevrolet El Camino (RWD) — LT Swap
    • 1968 Chevrolet El Camino (RWD) — LT Swap
    • 1969 Chevrolet El Camino (RWD) — LT Swap
    • 1970 Chevrolet El Camino (RWD) — LT Swap
    • 1971 Chevrolet El Camino (RWD) — LT Swap
    • 1972 Chevrolet El Camino (RWD) — LT Swap
    • 1973 Chevrolet El Camino (RWD) — LT Swap
    • 1974 Chevrolet El Camino (RWD) — LT Swap
    • 1975 Chevrolet El Camino (RWD) — LT Swap
    • 1976 Chevrolet El Camino (RWD) — LT Swap
    • 1977 Chevrolet El Camino (RWD) — LT Swap
    • 1978 Chevrolet El Camino (RWD) — LT Swap
    • 1979 Chevrolet El Camino (RWD) — LT Swap
    • 1980 Chevrolet El Camino (RWD) — LT Swap
    • 1981 Chevrolet El Camino (RWD) — LT Swap

    Chevrolet Monte Carlo — A-Body (RWD)

    • 1970 Chevrolet Monte Carlo (RWD) — LT Swap
    • 1971 Chevrolet Monte Carlo (RWD) — LT Swap
    • 1972 Chevrolet Monte Carlo (RWD) — LT Swap
    • 1973 Chevrolet Monte Carlo (RWD) — LT Swap
    • 1974 Chevrolet Monte Carlo (RWD) — LT Swap
    • 1975 Chevrolet Monte Carlo (RWD) — LT Swap
    • 1976 Chevrolet Monte Carlo (RWD) — LT Swap
    • 1977 Chevrolet Monte Carlo (RWD) — LT Swap
    • 1978 Chevrolet Monte Carlo (RWD) — LT Swap
    • 1979 Chevrolet Monte Carlo (RWD) — LT Swap
    • 1980 Chevrolet Monte Carlo (RWD) — LT Swap
    • 1981 Chevrolet Monte Carlo (RWD) — LT Swap

    Pontiac LeMans — A-Body (RWD)

    • 1964 Pontiac LeMans (RWD) — LT Swap
    • 1965 Pontiac LeMans (RWD) — LT Swap
    • 1966 Pontiac LeMans (RWD) — LT Swap
    • 1967 Pontiac LeMans (RWD) — LT Swap
    • 1968 Pontiac LeMans (RWD) — LT Swap
    • 1969 Pontiac LeMans (RWD) — LT Swap
    • 1970 Pontiac LeMans (RWD) — LT Swap
    • 1971 Pontiac LeMans (RWD) — LT Swap
    • 1972 Pontiac LeMans (RWD) — LT Swap
    • 1973 Pontiac LeMans (RWD) — LT Swap
    • 1974 Pontiac LeMans (RWD) — LT Swap
    • 1975 Pontiac LeMans (RWD) — LT Swap
    • 1976 Pontiac LeMans (RWD) — LT Swap
    • 1977 Pontiac LeMans (RWD) — LT Swap
    • 1978 Pontiac LeMans (RWD) — LT Swap
    • 1979 Pontiac LeMans (RWD) — LT Swap
    • 1980 Pontiac LeMans (RWD) — LT Swap
    • 1981 Pontiac LeMans (RWD) — LT Swap

    Pontiac GTO — A-Body (RWD)

    • 1964 Pontiac GTO (RWD) — LT Swap
    • 1965 Pontiac GTO (RWD) — LT Swap
    • 1966 Pontiac GTO (RWD) — LT Swap
    • 1967 Pontiac GTO (RWD) — LT Swap
    • 1968 Pontiac GTO (RWD) — LT Swap
    • 1969 Pontiac GTO (RWD) — LT Swap
    • 1970 Pontiac GTO (RWD) — LT Swap
    • 1971 Pontiac GTO (RWD) — LT Swap
    • 1972 Pontiac GTO (RWD) — LT Swap

    Pontiac Grand Prix — A-Body (RWD)

    • 1977 Pontiac Grand Prix (RWD) — LT Swap
    • 1978 Pontiac Grand Prix (RWD) — LT Swap
    • 1979 Pontiac Grand Prix (RWD) — LT Swap
    • 1980 Pontiac Grand Prix (RWD) — LT Swap
    • 1981 Pontiac Grand Prix (RWD) — LT Swap

    Oldsmobile Cutlass — A-Body (RWD)

    • 1964 Oldsmobile Cutlass (RWD) — LT Swap
    • 1965 Oldsmobile Cutlass (RWD) — LT Swap
    • 1966 Oldsmobile Cutlass (RWD) — LT Swap
    • 1967 Oldsmobile Cutlass (RWD) — LT Swap
    • 1968 Oldsmobile Cutlass (RWD) — LT Swap
    • 1969 Oldsmobile Cutlass (RWD) — LT Swap
    • 1970 Oldsmobile Cutlass (RWD) — LT Swap
    • 1971 Oldsmobile Cutlass (RWD) — LT Swap
    • 1972 Oldsmobile Cutlass (RWD) — LT Swap
    • 1973 Oldsmobile Cutlass (RWD) — LT Swap
    • 1974 Oldsmobile Cutlass (RWD) — LT Swap
    • 1975 Oldsmobile Cutlass (RWD) — LT Swap
    • 1976 Oldsmobile Cutlass (RWD) — LT Swap
    • 1977 Oldsmobile Cutlass (RWD) — LT Swap

    Buick Skylark — A-Body (RWD)

    • 1964 Buick Skylark (RWD) — LT Swap
    • 1965 Buick Skylark (RWD) — LT Swap
    • 1966 Buick Skylark (RWD) — LT Swap
    • 1967 Buick Skylark (RWD) — LT Swap
    • 1968 Buick Skylark (RWD) — LT Swap
    • 1969 Buick Skylark (RWD) — LT Swap
    • 1970 Buick Skylark (RWD) — LT Swap
    • 1971 Buick Skylark (RWD) — LT Swap
    • 1972 Buick Skylark (RWD) — LT Swap

    Buick Grand National — G-Body (RWD)

    • 1978 Buick Grand National (RWD) — LT Swap
    • 1979 Buick Grand National (RWD) — LT Swap
    • 1980 Buick Grand National (RWD) — LT Swap
    • 1981 Buick Grand National (RWD) — LT Swap

    ⚠️ Chassis Note: Confirm your vehicle is an A-body or F-body chassis before purchasing. Some models were also produced in G-body applications and will have fitment issues on a G-body platform.

    Frequently Asked Questions:

    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 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 vehicle platforms, Speed Engineering LT spark plug wires are required for proper fitment with these headers.

    Q: Will my vehicle have fitment issues if it is a G-body? Yes. These headers are designed for A-body and F-body chassis applications. Some vehicle models were produced in both A-body and G-body configurations — confirm your chassis type before purchasing as fitment issues will occur on G-body applications.

    Q: Will these work with my LT4 engine? Yes, but the LT4 engine may require an oil cooler adapter or delete kit 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 engines are these headers compatible with? These headers are compatible with GM Gen V LT V8 engines including 5.3L, 6.2L, LT1, and LT4.

    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 with the headers.

    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)).

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    Shipping Policy Last Updated: April 2026

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    Returns & Refunds Last Updated: April 2026

    We want you to love what you ordered. If something isn't right, here's everything you need to know.

    30-Day Return Window

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    • Your order number
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    If your item was damaged during shipping, this is handled as a carrier claim separate from our standard return process — we will assist you in filing that claim. Items confirmed to be defective due to a manufacturing or fulfillment error will have return shipping costs covered by Berry Performance Sales.

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    Once we receive and inspect your return, refunds are processed within 3–5 business days back to your original payment method. You'll receive a confirmation once it's been issued.

    Questions?

    We're happy to help before, during, or after your purchase. Email: sales@berryperformancesales.com

    Berry Performance Sales reserves the right to update this policy at any time. Changes take effect immediately upon posting. It is the customer's responsibility to review the current policy at the time of purchase.
    Disclaimer

    All products are sold for off-road use only unless otherwise specified. Buyer assumes all responsibility for installation and operation. Seller is not liable for any incidental, indirect, or consequential damages — including engine failure, labor costs, or vehicle downtime — resulting from the use of any product sold.

    By making a purchase from Berry Performance Sales, you acknowledge and agree to abide by the terms and conditions of these Policies.

    For any questions or concerns, please contact us — we’re always happy to help.

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