• Speed Engineering LT swap mid length 1-3/4 headers universal Gen V LT1 LT4 stainless LT conversion headers
    • Speed Engineering LT swap mid length 1-3/4 headers universal Gen V LT1 LT4 stainless LT conversion headers
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    Speed Engineering Universal LT Swap Mid-Length 1-3/4" Headers — F-Body, A-Body, X-Body, G-Body, C10 & OBS C1500 | Gen V LT1/LT4 | 25-1164 ETA 6/30/26

    Vendor: Speed Engineering
    SKU: 25-1164
    $279.99
    Fast Fulfillment: In-stock parts typically ship same day or next business day.
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    • Speed Engineering LT swap mid length 1-3/4 headers universal Gen V LT1 LT4 stainless LT conversion headers
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    Looking for a mid-length option for your Gen V LT swap build? Speed Engineering's 1-3/4" universal LT swap mid-length headers offer a balance between the compact fitment of a shorty and the performance of a longtube — mandrel bent, TIG-welded, and CNC-machined for a precise, port-matched fit across the most popular classic GM LT swap platforms including Camaro, Chevelle, Nova, C10, and OBS C1500 trucks. Compatible with 5.3L and 6.2L LT1 and LT4 engines. Dyno proven to deliver over 20 rear-wheel horsepower over stock manifolds.

    Built from 304 natural stainless steel with merge spikes 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
    • Knock sensor relocation is required for proper installation
    • 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

    Features:

    • Full 1-3/4" Port-Matched Primary Tubes with Merge Spikes — 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
    • Mid-Length Header Design — A balance between shorty and longtube for improved flow and fitment-friendly profile
    • Standard Graphite Manifold Gaskets Included
    • Dyno Proven — 20+ RWHP gain on LT swap applications
    • Compatible with 5.3L, 6.2L, LT1, and LT4 Engines (2014+)
    • 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.

    GM F-Body (RWD) — LT Swap

    Chevrolet Camaro

    • 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 & Trans Am

    • 1970 Pontiac Firebird/Trans Am (RWD) — LT Swap
    • 1971 Pontiac Firebird/Trans Am (RWD) — LT Swap
    • 1972 Pontiac Firebird/Trans Am (RWD) — LT Swap
    • 1973 Pontiac Firebird/Trans Am (RWD) — LT Swap
    • 1974 Pontiac Firebird/Trans Am (RWD) — LT Swap
    • 1975 Pontiac Firebird/Trans Am (RWD) — LT Swap
    • 1976 Pontiac Firebird/Trans Am (RWD) — LT Swap
    • 1977 Pontiac Firebird/Trans Am (RWD) — LT Swap
    • 1978 Pontiac Firebird/Trans Am (RWD) — LT Swap
    • 1979 Pontiac Firebird/Trans Am (RWD) — LT Swap
    • 1980 Pontiac Firebird/Trans Am (RWD) — LT Swap
    • 1981 Pontiac Firebird/Trans Am (RWD) — LT Swap

    GM A-Body (RWD) — LT Swap

    Chevrolet Chevelle & El Camino

    • 1968 Chevrolet Chevelle/El Camino (RWD) — LT Swap
    • 1969 Chevrolet Chevelle/El Camino (RWD) — LT Swap
    • 1970 Chevrolet Chevelle/El Camino (RWD) — LT Swap
    • 1971 Chevrolet Chevelle/El Camino (RWD) — LT Swap
    • 1972 Chevrolet Chevelle/El Camino (RWD) — LT Swap
    • 1973 Chevrolet Chevelle/El Camino (RWD) — LT Swap
    • 1974 Chevrolet Chevelle/El Camino (RWD) — LT Swap
    • 1975 Chevrolet Chevelle/El Camino (RWD) — LT Swap
    • 1976 Chevrolet Chevelle/El Camino (RWD) — LT Swap
    • 1977 Chevrolet Chevelle/El Camino (RWD) — LT Swap

    GM X-Body (RWD) — LT Swap

    Chevrolet Nova

    • 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

    GM G-Body (RWD) — LT Swap

    Chevrolet Monte Carlo & El Camino

    • 1982 Chevrolet Monte Carlo (RWD) — LT Swap
    • 1983 Chevrolet Monte Carlo (RWD) — LT Swap
    • 1984 Chevrolet Monte Carlo (RWD) — LT Swap
    • 1985 Chevrolet Monte Carlo (RWD) — LT Swap
    • 1986 Chevrolet Monte Carlo (RWD) — LT Swap
    • 1987 Chevrolet Monte Carlo (RWD) — LT Swap
    • 1982 Chevrolet El Camino (RWD) — LT Swap
    • 1983 Chevrolet El Camino (RWD) — LT Swap
    • 1984 Chevrolet El Camino (RWD) — LT Swap
    • 1985 Chevrolet El Camino (RWD) — LT Swap
    • 1986 Chevrolet El Camino (RWD) — LT Swap
    • 1987 Chevrolet El Camino (RWD) — LT Swap

    Pontiac Grand Prix

    • 1982 Pontiac Grand Prix (RWD) — LT Swap
    • 1983 Pontiac Grand Prix (RWD) — LT Swap
    • 1984 Pontiac Grand Prix (RWD) — LT Swap
    • 1985 Pontiac Grand Prix (RWD) — LT Swap
    • 1986 Pontiac Grand Prix (RWD) — LT Swap
    • 1987 Pontiac Grand Prix (RWD) — LT Swap

    Oldsmobile Cutlass

    • 1982 Oldsmobile Cutlass (RWD) — LT Swap
    • 1983 Oldsmobile Cutlass (RWD) — LT Swap
    • 1984 Oldsmobile Cutlass (RWD) — LT Swap
    • 1985 Oldsmobile Cutlass (RWD) — LT Swap
    • 1986 Oldsmobile Cutlass (RWD) — LT Swap
    • 1987 Oldsmobile Cutlass (RWD) — LT Swap

    Buick Regal & Grand National

    • 1982 Buick Regal/Grand National (RWD) — LT Swap
    • 1983 Buick Regal/Grand National (RWD) — LT Swap
    • 1984 Buick Regal/Grand National (RWD) — LT Swap
    • 1985 Buick Regal/Grand National (RWD) — LT Swap
    • 1986 Buick Regal/Grand National (RWD) — LT Swap
    • 1987 Buick Regal/Grand National (RWD) — LT Swap

    Chevrolet & GMC C10 Pickups & Panels (RWD) — LT Swap

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

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

    • 1988 Chevrolet C1500 Truck (2WD) — LT Swap
    • 1989 Chevrolet C1500 Truck (2WD) — LT Swap
    • 1990 Chevrolet C1500 Truck (2WD) — LT Swap
    • 1991 Chevrolet C1500 Truck (2WD) — LT Swap
    • 1992 Chevrolet C1500 Truck (2WD) — LT Swap
    • 1993 Chevrolet C1500 Truck (2WD) — LT Swap
    • 1994 Chevrolet C1500 Truck (2WD) — LT Swap
    • 1995 Chevrolet C1500 Truck (2WD) — LT Swap
    • 1996 Chevrolet C1500 Truck (2WD) — LT Swap
    • 1997 Chevrolet C1500 Truck (2WD) — LT Swap
    • 1998 Chevrolet C1500 Truck (2WD) — LT Swap
    • 1988 GMC C1500 Truck (2WD) — LT Swap
    • 1989 GMC C1500 Truck (2WD) — LT Swap
    • 1990 GMC C1500 Truck (2WD) — LT Swap
    • 1991 GMC C1500 Truck (2WD) — LT Swap
    • 1992 GMC C1500 Truck (2WD) — LT Swap
    • 1993 GMC C1500 Truck (2WD) — LT Swap
    • 1994 GMC C1500 Truck (2WD) — LT Swap
    • 1995 GMC C1500 Truck (2WD) — LT Swap
    • 1996 GMC C1500 Truck (2WD) — LT Swap
    • 1997 GMC C1500 Truck (2WD) — LT Swap
    • 1998 GMC C1500 Truck (2WD) — LT Swap

    Frequently Asked Questions:

    Q: What is the difference between these LT swap mid-length headers and the LS swap mid-length headers (25-1066)? The key difference is the engine family. Part 25-1164 is designed for Gen V LT direct injection engine swaps including LT1 and LT4. Part 25-1066 is designed for GM LS engine swaps. Both cover the same classic GM platforms. Make sure you select the correct headers for your specific engine swap.

    Q: Is knock sensor relocation required? Yes. Knock sensor relocation is required for proper installation of these headers on Gen V LT engine swap applications.

    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: 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 due to the tight fitment design.

    Q: What LT 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 (2014 and newer).

    Q: How much horsepower do these headers add? Speed Engineering's 1-3/4" LT swap mid-length headers are dyno proven to add over 20 rear-wheel horsepower compared to stock exhaust manifolds on LT swap applications.

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

    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)).

    ⚠️ 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).

    Shipping Policy

    Shipping Policy Last Updated: April 2026

    We're committed to getting your order to you as quickly and transparently as possible. Here's everything you need to know about how we ship.

    Order Cancellations

    Once an order is placed, cancellations are not guaranteed as orders are sent to fulfillment quickly. If you need to cancel, contact us immediately at sales@berryperformancesales.com. If a cancellation is possible, the buyer is responsible for any transaction fees incurred. If the order has already shipped, it cannot be cancelled and must go through our standard return process.

    Processing Time

    In-stock orders are typically processed and shipped within 1–2 business days of receiving payment, unless otherwise noted on the product page. Orders placed on weekends or holidays will be processed on the next business day.

    Shipping Costs

    Shipping costs are calculated at checkout based on the shipping method selected, package weight and dimensions, and destination address. You can review all shipping costs before finalizing your purchase.

    Estimated Delivery Times

    Domestic orders typically arrive within 1–7 business days after shipment, depending on your location and the carrier. Please note that delivery times are estimates and are not guaranteed. Delays due to weather, carrier volume, or other circumstances beyond our control may occur.

    Tracking Information

    Once your order ships, you will receive a confirmation email with tracking information. Use this to monitor your package's progress. If your tracking has not updated within 48 hours of receiving your confirmation email, please contact us and we'll look into it.

    Shipping Address

    Please ensure your shipping address is accurate and complete before placing your order. If you realize an error after ordering, contact us immediately at sales@berryperformancesales.com — we will do our best to make the correction, but changes cannot be guaranteed once an order is in fulfillment. We are not responsible for orders shipped to incorrect or undeliverable addresses due to customer error.

    Please note: We are unable to ship to P.O. Boxes. Please provide a physical delivery address at checkout.

    Lost or Stolen Packages

    If your tracking shows your order as delivered but you have not received it, please take the following steps:

    • Check around your property and with neighbors
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    • Contact the carrier directly with your tracking number

    If the issue remains unresolved, contact us at sales@berryperformancesales.com within 5 business days of the marked delivery date. We will work with you and the carrier to investigate. Berry Performance Sales is not responsible for packages confirmed as delivered by the carrier or for packages stolen after delivery.

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    If your order arrives visibly damaged, please refer to our Returns & Refunds policy for instructions on how to report the issue. Carrier damage claims must be reported within 48 hours of delivery.

    International Shipping

    We do ship internationally! Because shipping costs, carrier options, and transit times vary significantly by destination, international orders require a custom quote prior to purchase. To request a shipping quote, contact us at sales@berryperformancesales.com with the following:

    • Your country and full delivery address
    • The item(s) you are interested in ordering

    We will respond with a shipping quote as quickly as possible. Please note that customs duties, import taxes, and any other fees charged upon delivery are the sole responsibility of the recipient and are not included in your shipping quote. We recommend checking with your local customs office before placing your order.

    Off-Road Use Disclaimer

    All products are sold for off-road use only unless otherwise specified. The buyer assumes full responsibility for installation and operation. Berry Performance Sales is not liable for any incidental, indirect, or consequential damages including engine failure, labor charges, or vehicle downtime resulting from the use of any product sold. By placing an order, you acknowledge and accept these terms.

    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.
    Return Policy

    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

    You have 30 days from the date of purchase to initiate a return. After this window, we are unable to accept returns. We do not offer exchanges — all approved returns are refunded per the terms below.

    How to Initiate a Return

    To request a return, contact us at sales@berryperformancesales.com with your order number and reason for return. All returns must be approved by our team before any item is shipped back to us. Once your return has been approved, your item must be shipped within 10 days of approval. Items shipped without prior approval or outside this window will be refused and returned to sender.

    Return Conditions

    To be eligible for a return, items must be:

    • Unused and in original condition
    • In original packaging
    • Inclusive of all parts and accessories

    Custom ordered products are non-returnable. If you're unsure whether your item qualifies, contact us before purchasing.

    Once we receive your return, we will inspect the item before processing any refund. We reserve the right to deny or adjust your refund if the item is received in a condition that differs from what was originally shipped — including signs of use, missing parts, or damage that occurred after delivery.

    Fees to Know Upfront

    We believe in being transparent about costs:

    • Restocking Fee: 20% — deducted from all return refunds
    • Return Shipping: Buyer's responsibility on all standard returns
    • Cancellation (Installment/Payment Plan): 7% fee to cover transaction costs
    • Cancellation (Credit Card/PayPal): 3.5% processing fee

    Damaged or Defective Items

    If your order arrives damaged or defective, you must contact us within 48 hours of delivery at sales@berryperformancesales.com. Claims reported outside this window may not be eligible for resolution.

    When contacting us, please include:

    • Your order number
    • A description of the issue
    • Clear photos or video of the damage or defect

    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.

    Refunds

    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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