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LS - LT Headquarters

At Classic Performance Products, we understand the popularity and performance benefits of LS and LT swaps in classic cars and trucks. That's why we've carefully curated a comprehensive range of LS - LT Conversion Products and Components ... to meet the diverse needs of enthusiasts and professionals alike. Whether you're undertaking a complete engine swap or just looking to upgrade specific aspects of your vehicle's engine setup, we have you covered. .

Our selection encompasses everything from LS Fit Rite Install Kits, designed to ensure an easy conversion, to specific component parts that guarantee compatibility and performance. Looking for an affordable entry point? Explore our LS Economy Install Kits. If it's the sound and efficiency you're after, our LS Exhaust systems and LS Fuel Tank Conversions provide just that.

Electrical setups can be complex, but our LS Electrical components make integration a breeze. Improve intake efficiency with our LS Intake Systems, or upgrade your aesthetic and functionality with LS Pulley Systems and LS Dress Up accessories. For those embracing the latest in GM engine technology, our LT Fuel Tank Conversions offer the compatibility your project demands.

Choose Classic Performance Products for your LS - LT Conversion needs and benefit from our extensive selection, ensuring your classic car or truck not only retains its timeless appeal but also performs at its peak with modern power.


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  1. 55-57 Chevy Full Size LS Engine Install Kit W/Headers

    55-57 Chevy Full Size, Includes Oil Pan, Engine Stands, Adjustable Engine Mounts, Transmission Cross Member, Doug Thorley Ceramic Coated THY-358Y-C Headers, W/Polyurethane Mounts

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    In Stock
    Part # 5557LS1-FRK
    0%
    $1,889.00
  2. 21 Gal Galvanized Steel Gas Tank for 1975-77 Camaro

    1975-77 Camaro, 75-78 Firebird Coated Steel EFI Gas Tank, Baffled 21 Gallon

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    In Stock
    Part # TM203-T
    0%
    $305.00
  3. Eddie Motorsport Valve Covers LS Fabricated Aluminum w/ Coil Mount Polished

    Valve Covers, Chevy LS, Fabricated aluminum, With coil mounts, Bright polished finish

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    In Stock
    Part # EMS108-48P
    0%
    $195.00
  4. LS Engine Adjustable Mounting Plates, Polyurethane Pads & Clam Steel Engine Perches

    1/2" Rearwards to 3 1/2" Forward, Can be used with A/C Compressor in the upper Passenger position, or no A/C Compressor, with Polyurethane Pads

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    In Stock
    Part # LSCSM-KP
    0%
    $209.00
  5. 18 Gallon Fuel Injection Tank Kit Notched for a 1967-68 Camaro

    1967-1968 Chevy Camaro, Includes Tank, Fuel Hose & Filler Neck, Notched

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    In Stock
    Part # CM6768NOGT-FI
    0%
    $447.00
  6. 55-57 Chevy Full Size LS Engine Install Kit W/Silver Ceramic Manifolds

    55-57 Chevy Full Size, Includes Oil Pan, Engine Stands, Adjustable Engine Mounts, Transmission Cross Member, Silver Ceramic Coated Cast Iron Manifolds W/ Head Pipes, W/Polyurethane Mounts

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    In Stock
    Part # 5557ELS-K-SCA
    0%
    $1,180.00
  7. LS Exhaust Manifolds Black Ceramic

    Includes Hardware and Gaskets

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    In Stock
    Part # LSCDM-B
    0%
    $439.00
  8. Manifold Kit w/ Header Pipes Silver Ceramic for 1964-1972 Chevy Chevelle, Silver Ceramic

    1964-1972 Chevy Chevelle, Silver Ceramic

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    In Stock
    Part # 6472MK-SCA
    0%
    $449.00
  9. Power Steering Filter

    AN6 to AN6

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    In Stock
    Part # PSF-AN
    0%
    $23.00
  10. 18 Gal Galvanized Steel Gas Tank for 1963-72 Chevy Truck, 2" Tall Threaded Neck

    1963-72 Chevy Truck Frame Mount EFI Tank Bed Fill - TM6372 FILLER NECK OPTION: 2" Tall Threaded Neck & Aluminum Cap, 18 Gallon Baffled

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    In Stock
    Part # TM6372-T
    0%
    $329.00
  11. 21 Gal Black Carbureted & Fuel Injection Ready Aluminum Bed Flush Fuel Tank for 1948-60 Ford Truck

    48-60 Ford Truck 21 Gallon Baffled Fuel Tank, Bed Flush, Powder Coated Black

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    In Stock
    Part # 4860AGT-21BFHB
    0%
    $649.00
  12. Adjustable Fuel Regulator W/Bypass

    Works with Carb and Fuel Injection. 8-80 PSI, E85 Compatible, 800HP Capable

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    In Stock
    Part # 90395
    0%
    $69.00
  13. Eddie Motorsport Coil Relocation Kit LS2/3/7 Matte Black

    Coil Relocation Kit, Universal, LS2-3-7-9 Chevy Coils, Aluminum, Made in the USA, Matte black Fusioncoat finish

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    In Stock
    Part # EMS109-10MB
    0%
    $157.00
  14. 17 Gal Carbureted & Fuel Injection Ready Aluminum Bed Standard Fuel Tank for 54-54 Chevy Truck

    54-55 Chevy/GMC Truck 17 Gallon Baffled Fuel Tank, Bed Standard, Unfinished

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    In Stock
    Part # 5455AGT-17BSH
    0%
    $599.00
  15. Manifold Kit w/ Header Pipes Silver Ceramic for Universal Fitment, Silver Ceramic

    Universal Fitment, Silver Ceramic

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    In Stock
    Part # CPLSMK-SCA
    0%
    $449.00
  16. LS Engine Install Kit W/Manifolds, 1959-64 Chevy Full Size

    1959-64 Chevy Full Size, Includes Oil Pan, Engine Stands, Adjustable Engine Mounts, Transmission Cross Member, Cast Iron Manifolds W/ Head Pipes, W/Polyurethane Mounts

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    In Stock
    Part # 5964ELS-K
    0%
    $1,100.00
  17. 20 Gal Galvanized Steel Gas Tank for 1969-1970 Pontiac GTO and Lemans

    1969-1970 Pontiac GTO and Lemans EFI, Baffled 20 Gallon

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    In Stock
    Part # TM34D-T
    0%
    $285.00
  18. Eddie Motorsport Power Steering Kit LT1 Remote Power Steering Black Anodized

    Power steering kit for Gen V Chevy LT1, Includes pump for remote reservoir, Gloss black anodized

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    In Stock
    Part # EMS107-19RBA
    0%
    $395.00
  19. 1.125" Forward LS Engine Mounting Plates

    1.125" Forward LS Engine Mounting Plates

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    In Stock
    Part # LS1-K125
    0%
    $99.00
  20. 20 Gal Notched Gal Notchedvanized Steel Gas Tank for 1970 Chevrolet Chevelle

    1970 Chevrolet Chevelle Notched Corner EFI, Baffled 20 Gallon

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    In Stock
    Part # TM34EN-T
    0%
    $329.00
  21. Eddie Motorsport Valve Covers LS Cast Aluminum Polished

    Valve Covers, LS Chevy, Aluminum, Smooth Top, Includes fasteners & Oil Fill Cap, Bright polished finish

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    In Stock
    Part # EMS108-50P
    0%
    $199.00
  22. LT Engine Adjustable Mounting Plates

    1/2" Rearwards to 3 1/2" Forward, Can be used with A/C Compressor in the upper Passenger position, or no A/C Compressor, with Polyurethane Pads

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    In Stock
    Part # LT1-KU
    0%
    $119.00
  23. Universal Air Intake Elbow 4" OD 60 Degree Elbow

    4" Diameter, Universal, 60 Degree Elbow, Aluminum, Polished Each

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    In Stock
    Part # KNSPE-97690
    0%
    $63.00
  24. 18 Gal Galvanized Steel Gas Tank for 1969 Chevy Camaro/Firebird

    1969 Chevy Camaro/Firebird Coated Steel EFI Gas Tank, 18 Gallon, Baffled

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    In Stock
    Part # TM32B-T
    0%
    $285.00
  25. Complete Fitting Kit & Stainless Hose (25 Feet) for LS Conversion

    Complete Fitting Kit & Stainless Hose (25 Feet) for LS Conversion

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    In Stock
    Part # LSLKCS
    0%
    $199.00
  26. LS Exhaust Manifolds Rear Dump Silver Ceramic

    Includes Hardware and Gaskets

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    In Stock
    Part # LSRDM-SC
    0%
    $369.00
  27. 20 Gal Galvanized Steel Gas Tank for 1970 Buick Skylark

    1970 Buick Skylark, GS & Special Fuel Injection Gas Tank, Baffled, 20 Gallons

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    In Stock
    Part # TM34L-T
    0%
    $285.00
  28. Eddie Motorsport Valve Covers LS Billet Ball Mill Polished

    Valve Covers, Chevy LS, Billet Aluminum, Ball milled top, Bright polished finish

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    In Stock
    Part # EMS108-71P
    0%
    $569.00
  29. 17 Gal Galvanized Steel Gas Tank for 1961-64 Chevy Bel Air

    1961-64 Chevy Bel Air, Biscayne, Impala EFI Gas Tank, Baffled 20 Gallon

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    In Stock
    Part # TM31-T
    0%
    $285.00
  30. 22 Gal Carbureted & Fuel Injection Ready Aluminum Fuel Tank, 1947-53 Chevy/GMC Truck

    1947-53 Chevy/GMC Truck 22 Gallon Baffled Fuel Tank, Bed Flush, Unfinished

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    In Stock
    Part # 4753AGT-22BFH
    0%
    $599.00
  31. 20 Gal Galvanized Steel Gas Tank for 1956-62 Corvette

    1956-62 Corvette Fuel Injection Gas Tank, Baffled, 16 Gallons

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    In Stock
    Part # TM45-T
    0%
    $309.00
  32. Eddie Motorsport Valve Covers LS Billet Smooth Machined

    Valve Covers, Chevy LS, Billet Aluminum, Smooth top, Raw machined finish

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    In Stock
    Part # EMS108-70M
    0%
    $495.00
  33. 20 Gal Carbureted & Fuel Injection Ready Pro Touring Aluminum Fuel Tank for 1970-73 Camaro

    70-73 Camaro/Firebird 20 Gallon Baffled Fuel Tank, uses 1 or 2 Fuel Pumps, Unfinished

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    In Stock
    Part # 7073AGT-20H
    0%
    $699.00
  34. CPP Complete EFI Install Kit, 90 OHM, 255 LPH for LT Engines

    Includes Sending Unit, 25 Feet of Hose, all Fittings needed, Fuel Filter & Adjustable Regulator, Fuel Pump W/Bracket.

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    In Stock
    Part # CPFIIK255-90LT
    0%
    $479.00
  35. 20 Gal Carbureted & Fuel Injection Ready Aluminum Bed Standard Fuel Tank for a 1955-59 Chevy/GMC Truck

    55-59 Chevy/GMC Truck 20 Gallon Baffled Fuel Tank, Bed Standard, Unfinished

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    In Stock
    Part # 5559AGT-20BSH
    0%
    $599.00
  36. 21 Gal Fuel Injection Tank for a 1974-77 Chevy Camaro

    1974-1977 Chevy Camaro, 1974-1978 Pontiac Firebird, Includes Tank & Straps

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    In Stock
    Part # CM7477OGT-FI
    0%
    $405.00
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