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Replacement and Crate Engines

ATK Remanufactured Engines

If you’re restoring a classic car, muscle car or hot rod, it’s a good bet that the motor in it is going to be pretty tired — if it’s still working at all. ATK Engines has been a performance engine builder since 1946 and has an engine combination that will get your project car roaring again. Rebuilding an engine is fun for some, but exhausting and time-consuming for many others. By choosing ATK, you can get everything from a partial build to a drop-in powerplant that’s ready to hit the road or the track.

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  • ATK Chevy 383 Marine Stroker Engine 345HP Base HP90

    ATK Chevy 383 Marine Stroker Engine 345HP Base HP90

    HP90 ATK Chevy 383 345HP Marine Stroker Base Engine Long Block
    $3,893.99

    Out of stock

    HP90 ATK Chevy 383 345HP Marine Stroker Base Engine Long Block
    $3,893.99

    Out of stock

  • ATK Chevy LQ9 Gen IV 408 Boost/Nitrous Short Block 58 Tooth Flat Top SP32-G4-B Engine

    ATK Chevy LQ9 Gen IV 408 Boost/Nitrous Short Block 58 Tooth Flat Top SP32-G4-B Engine

    ATK SP32-G4-B Chevy LQ9 Gen IV 408 Short Block
    $5,149.99

    Out of stock

    ATK SP32-G4-B Chevy LQ9 Gen IV 408 Short Block
    $5,149.99

    Out of stock

  • ATK Chevy LS3 415 Short Block 58 Tooth -29cc Dished SP74 Engine

    ATK Chevy LS3 415 Short Block 58 Tooth -29cc Dished SP74 Engine

    ATK SP74 Chevy LS3 415 Short Block -29cc
    $5,304.99
    ATK SP74 Chevy LS3 415 Short Block -29cc
    $5,304.99
  • ATK Chevy 383 CI Short Block Forged Piston Flat Top SP52 Engine

    ATK Chevy 383 CI Short Block Forged Piston Flat Top SP52 Engine

    SP52 ATK Chevy 383 CI Short Block Forged Piston Flat Top
    $2,265.99

    Out of stock

    SP52 ATK Chevy 383 CI Short Block Forged Piston Flat Top
    $2,265.99

    Out of stock

  • ATK Chevy LS 408 Short Block 58 Tooth -10cc Dished SP26 Engine

    ATK Chevy LS 408 Short Block 58 Tooth -10cc Dished SP26 Engine

    ATK SP26 Chevy LS 408 Short Block 58 Tooth -10cc
    $4,006.99

    Out of stock

    ATK SP26 Chevy LS 408 Short Block 58 Tooth -10cc
    $4,006.99

    Out of stock

  • ATK GM LM7 347CI 500HP Base LM7-LB-2 Engine

    ATK GM LM7 347CI 500HP Base LM7-LB-2 Engine

    ATK LM7-LB-2 GM LM7 347CI Base Engine 500HP
    $6,699.99
    ATK LM7-LB-2 GM LM7 347CI Base Engine 500HP
    $6,699.99
  • ATK Chevy LQ9 Gen IV 408 Boost/Nitrous Short Block 24 Tooth -18cc Dished SP38-G4-B Engine

    ATK Chevy LQ9 Gen IV 408 Boost/Nitrous Short Block 24 Tooth -18cc Dished SP38-G4-B Engine

    SP38-G4-B ATK Chevy LQ9 Gen IV 408 Boost/Nitrous Short Block 24 Tooth -18cc Dished
    $5,149.99

    Out of stock

    SP38-G4-B ATK Chevy LQ9 Gen IV 408 Boost/Nitrous Short Block 24 Tooth -18cc Dished
    $5,149.99

    Out of stock

  • ATK Chevy LQ9 Gen IV 370CI Short Block 24 Tooth -11cc Dished SP94-G4 Engine

    ATK Chevy LQ9 Gen IV 370CI Short Block 24 Tooth -11cc Dished SP94-G4 Engine

    ATK SP94-G4 Chevy LQ9 Gen IV 370CI Short Block -11cc
    $3,832.99

    Out of stock

    ATK SP94-G4 Chevy LQ9 Gen IV 370CI Short Block -11cc
    $3,832.99

    Out of stock

  • ATK Chevy 350CI Engine 390HP Mid Dress HP89M

    ATK Chevy 350CI Engine 390HP Mid Dress HP89M

    HP89M ATK Chevy 350CI Mid-Dress Engine 390HP
    $3,924.99

    Out of stock

    HP89M ATK Chevy 350CI Mid-Dress Engine 390HP
    $3,924.99

    Out of stock

  • ATK Chevy LQ9 Gen IV 408 Stroker Short Block 58 Tooth Flat Top SP32-G4 Engine

    ATK Chevy LQ9 Gen IV 408 Stroker Short Block 58 Tooth Flat Top SP32-G4 Engine

    ATK SP32-G4 Chevy LQ9 Gen IV 408 Stroker Short Block
    $4,624.99

    Out of stock

    ATK SP32-G4 Chevy LQ9 Gen IV 408 Stroker Short Block
    $4,624.99

    Out of stock

  • ATK Chevy LS3 415 Short Block 58 Tooth Flat Top SP73 Engine

    ATK Chevy LS3 415 Short Block 58 Tooth Flat Top SP73 Engine

    ATK SP73 Chevy LS3 415 Short Block 58 Tooth Flat Top
    $5,304.99
    ATK SP73 Chevy LS3 415 Short Block 58 Tooth Flat Top
    $5,304.99
  • ATK Chevy 434CI Short Block Forged Flat Top SP48 Engine

    ATK Chevy 434CI Short Block Forged Flat Top SP48 Engine

    SP48 ATK Chevy 434CI Short Block Forged Flat Top
    $5,004.99
    SP48 ATK Chevy 434CI Short Block Forged Flat Top
    $5,004.99
  • ATK Ford 408 Stroker Short Block -22cc Dished SP25 Engine

    ATK Ford 408 Stroker Short Block -22cc Dished SP25 Engine

    ATK SP25 Ford 408 Stroker Short Block -22cc
    $2,781.99

    Out of stock

    ATK SP25 Ford 408 Stroker Short Block -22cc
    $2,781.99

    Out of stock

  • ATK Chevy Engine

    ATK Chevy 350CI Engine 345HP Mid Dress HP98M

    ATK HP98M Chevy 350CI Mid-Dress Engine 345HP
    $3,141.99

    Out of stock

    ATK HP98M Chevy 350CI Mid-Dress Engine 345HP
    $3,141.99

    Out of stock

  • ATK Chevy LQ9 Gen IV 408 Stroker Short Block 24 Tooth -18cc Dished SP38-G4 Engine

    ATK Chevy LQ9 Gen IV 408 Stroker Short Block 24 Tooth -18cc Dished SP38-G4 Engine

    SP38-G4 ATK Chevy LQ9 Gen IV 408 Stroker Short Block 24 Tooth -18cc Dished
    $4,624.99

    Out of stock

    SP38-G4 ATK Chevy LQ9 Gen IV 408 Stroker Short Block 24 Tooth -18cc Dished
    $4,624.99

    Out of stock

  • ATK Chevy LS2 403CI Stroker Short Block -15cc Dished Pistons 58 Tooth SP86 Engine

    ATK Chevy LS2 403CI Stroker Short Block -15cc Dished Pistons 58 Tooth SP86 Engine

    ATK SP86 Chevy LS2 403CI Stroker Short Block -15cc
    $4,937.99
    ATK SP86 Chevy LS2 403CI Stroker Short Block -15cc
    $4,937.99
  • ATK Chevy 350CI Engine 390HP Complete EFI HP89C-EFI

    ATK Chevy 350CI Engine 390HP Complete EFI HP89C-EFI

    ATK HP89C-EFI Chevy 350CI 390HP Complete Engine Long Block
    $5,252.99

    Out of stock

    ATK HP89C-EFI Chevy 350CI 390HP Complete Engine Long Block
    $5,252.99

    Out of stock

  • ATK Chevy LS 408 Boost/Nitrous Short Block 58 Tooth Flat Top SP32-B Engine

    ATK Chevy LS 408 Boost/Nitrous Short Block 58 Tooth Flat Top SP32-B Engine

    ATK SP32-B Chevy LS 408 Short Block
    $4,408.99

    Out of stock

    ATK SP32-B Chevy LS 408 Short Block
    $4,408.99

    Out of stock

  • ATK Chevy LS3 415 Short Block 58 Tooth -18cc Dished SP72 Engine

    ATK Chevy LS3 415 Short Block 58 Tooth -18cc Dished SP72 Engine

    ATK SP72 Chevy LS3 415 Short Block 58 Tooth -18cc
    $5,304.99
    ATK SP72 Chevy LS3 415 Short Block 58 Tooth -18cc
    $5,304.99
  • ATK Chevy 489/496 Stroker Short Block +20cc Dome SP41-1P Engine

    ATK Chevy 489/496 Stroker Short Block +20cc Dome SP41-1P Engine

    SP41-1P ATK Chevy 489/496 Stroker Short Block +20cc Dome
    $3,927.99

    Out of stock

    SP41-1P ATK Chevy 489/496 Stroker Short Block +20cc Dome
    $3,927.99

    Out of stock

  • ATK Ford 520 Stroker Short Block -36cc Dished Forged SP22 Engine

    ATK Ford 520 Stroker Short Block -36cc Dished Forged SP22 Engine

    ATK SP22 Ford 520 Stroker Short Block -36cc
    $3,924.99

    Out of stock

    ATK SP22 Ford 520 Stroker Short Block -36cc
    $3,924.99

    Out of stock

  • ATK Chevy 350CI Engine 345HP Complete HP98C

    ATK Chevy 350CI Engine 345HP Complete HP98C

    HP98C ATK Chevy 350CI Complete Engine 345HP
    $3,862.99

    Out of stock

    HP98C ATK Chevy 350CI Complete Engine 345HP
    $3,862.99

    Out of stock

  • ATK Chevy LS 408 Short Block 24 Tooth -18cc Dished SP38 Engine

    ATK Chevy LS 408 Short Block 24 Tooth -18cc Dished SP38 Engine

    SP38 ATK Chevy LS 408 Short Block 24 Tooth -18cc Dished
    $4,006.99

    Out of stock

    SP38 ATK Chevy LS 408 Short Block 24 Tooth -18cc Dished
    $4,006.99

    Out of stock

  • ATK Chevy LS2 403CI Stroker Short Block -8cc Dished Pistons 58 Tooth SP85 Engine

    ATK Chevy LS2 403CI Stroker Short Block -8cc Dished Pistons 58 Tooth SP85 Engine

    ATK SP85 Chevy LS2 403CI Stroker Short Block -8cc
    $4,937.99
    ATK SP85 Chevy LS2 403CI Stroker Short Block -8cc
    $4,937.99
  • ATK Chevy 350CI Engine 390HP Complete HP89C

    ATK Chevy 350CI Engine 390HP Complete HP89C

    HP89C ATK Chevy 350CI Complete Engine 390HP
    $4,779.99

    Out of stock

    HP89C ATK Chevy 350CI Complete Engine 390HP
    $4,779.99

    Out of stock

  • ATK Chevy LS 408 Short Block 58 Tooth Flat Top SP32 Engine

    ATK Chevy LS 408 Short Block 58 Tooth Flat Top SP32 Engine

    ATK SP32 Chevy LS 408 Short Block 58 Tooth Flat Top
    $4,006.99

    Out of stock

    ATK SP32 Chevy LS 408 Short Block 58 Tooth Flat Top
    $4,006.99

    Out of stock

  • ATK Chevy LS3 415 Short Block 58 Tooth -10cc Dished SP71

    ATK Chevy LS3 415 Short Block 58 Tooth -10cc Dished SP71

    ATK SP71 Chevy LS3 415 Short Block 58 Tooth -10cc
    $5,163.99
    ATK SP71 Chevy LS3 415 Short Block 58 Tooth -10cc
    $5,163.99
  • ATK Ford 408 Stroker Short Block -25.8cc Dished Forged SP21 Engine

    ATK Ford 408 Stroker Short Block -25.8cc Dished Forged SP21 Engine

    ATK SP21 Ford 408 Stroker Short Block 25.8cc
    $3,400.99

    Out of stock

    ATK SP21 Ford 408 Stroker Short Block 25.8cc
    $3,400.99

    Out of stock

  • ATK Chevy LQ9 Gen IV 408 Boost/Nitrous Short Block 24 Tooth -29cc Dished SP40-G4-B Engine

    ATK Chevy LQ9 Gen IV 408 Boost/Nitrous Short Block 24 Tooth -29cc Dished SP40-G4-B Engine

    SP40-G4-B ATK Chevy LQ9 Gen IV 408 Boost/Nitrous Short Block 24 Tooth -29cc Dished
    $5,149.99

    Out of stock

    SP40-G4-B ATK Chevy LQ9 Gen IV 408 Boost/Nitrous Short Block 24 Tooth -29cc Dished
    $5,149.99

    Out of stock

  • ATK Chevy LQ9 Gen IV 408 Boost/Nitrous Short Block 24 Tooth -10cc Dished SP37-G4-B Engine

    ATK Chevy LQ9 Gen IV 408 Boost/Nitrous Short Block 24 Tooth -10cc Dished SP37-G4-B Engine

    SP37-G4-B ATK Chevy LQ9 Gen IV 408 Boost/Nitrous Short Block 24 Tooth -10cc Dished
    $5,149.99

    Out of stock

    SP37-G4-B ATK Chevy LQ9 Gen IV 408 Boost/Nitrous Short Block 24 Tooth -10cc Dished
    $5,149.99

    Out of stock

  • ATK Chevy LS2 365CI Short Block -25cc Dished Pistons 58 Tooth SP83 Engine

    ATK Chevy LS2 365CI Short Block -25cc Dished Pistons 58 Tooth SP83 Engine

    ATK SP83 Chevy LS2 365CI Short Block -25cc Dished Pistons
    $4,054.99
    ATK SP83 Chevy LS2 365CI Short Block -25cc Dished Pistons
    $4,054.99
  • ATK Chevy 350CI Engine 345HP Base HP98

    ATK Chevy 350CI Engine 345HP Base HP98

    HP98 ATK Chevy 350CI Base Engine 345HP
    $2,780.99

    Out of stock

    HP98 ATK Chevy 350CI Base Engine 345HP
    $2,780.99

    Out of stock

  • ATK Chevy LM-7/LS 347CI Short Block Engine -11cc Dished Pistons 24 Tooth SP76

    ATK Chevy LM-7/LS 347CI Short Block Engine -11cc Dished Pistons 24 Tooth SP76

    ATK Chevy LM-7/LS 347CI Short Block 11cc Dished Coated Skirts
    $2,868.99
    ATK Chevy LM-7/LS 347CI Short Block 11cc Dished Coated Skirts
    $2,868.99
  • ATK Chevy LQ9 Gen IV 408 Boost/Nitrous Short Block 58 Tooth -18cc Dished SP31-G4-B Engine

    ATK Chevy LQ9 Gen IV 408 Boost/Nitrous Short Block 58 Tooth -18cc Dished SP31-G4-B Engine

    ATK SP31-G4-B Chevy LQ9 Gen IV 408 Short Block 18cc
    $5,149.99

    Out of stock

    ATK SP31-G4-B Chevy LQ9 Gen IV 408 Short Block 18cc
    $5,149.99

    Out of stock

  • ATK Chevy LS3 415 Short Block 24 Tooth -29cc Dished SP70 Engine

    ATK Chevy LS3 415 Short Block 24 Tooth -29cc Dished SP70 Engine

    ATK SP70 Chevy LS3 415 Short Block 29cc
    $5,304.99
    ATK SP70 Chevy LS3 415 Short Block 29cc
    $5,304.99
  • ATK HP32 Chevy 350 Base Engine 350HP

    ATK HP32 Chevy 350 Base Engine 350HP

    HP32 ATK Chevrolet 350 64-85 H.P. Base Engine Long Block

    $2,987.99
    HP32 ATK Chevrolet 350 64-85 H.P. Base Engine Long Block

    $2,987.99
  • ATK Ford 393 Stroker Short Block -16.5cc Dished SP17 Engine

    ATK Ford 393 Stroker Short Block -16.5cc Dished SP17 Engine

    ATK SP17 Ford 393 Stroker Short Block 16.5cc
    $2,885.99

    Out of stock

    ATK SP17 Ford 393 Stroker Short Block 16.5cc
    $2,885.99

    Out of stock

  • ATK Chevy LQ9 Gen IV 408 Stroker Short Block 24 Tooth -29cc Dished SP40-G4 Engine

    ATK Chevy LQ9 Gen IV 408 Stroker Short Block 24 Tooth -29cc Dished SP40-G4 Engine

    SP40-G4 ATK Chevy LQ9 Gen IV 408 Stroker Short Block 24 Tooth -29cc Dished
    $4,624.99

    Out of stock

    SP40-G4 ATK Chevy LQ9 Gen IV 408 Stroker Short Block 24 Tooth -29cc Dished
    $4,624.99

    Out of stock

  • ATK Chevy LQ9 Gen IV 408 Stroker Short Block 24 Tooth -10cc Dished SP37-G4 Engine

    ATK Chevy LQ9 Gen IV 408 Stroker Short Block 24 Tooth -10cc Dished SP37-G4 Engine

    SP37-G4 ATK Chevy LQ9 Gen IV 408 Stroker Short Block 24 Tooth -10cc Dished
    $4,624.99

    Out of stock

    SP37-G4 ATK Chevy LQ9 Gen IV 408 Stroker Short Block 24 Tooth -10cc Dished
    $4,624.99

    Out of stock

  • ATK Chevy LS2 365CI Short Block -11cc Dished Pistons 58 Tooth SP82 Engine

    ATK Chevy LS2 365CI Short Block -11cc Dished Pistons 58 Tooth SP82 Engine

    ATK SP82 Chevy LS2 365CI Short Block -11cc Dished Pistons
    $4,054.99
    ATK SP82 Chevy LS2 365CI Short Block -11cc Dished Pistons
    $4,054.99

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ATK Remanufactured Engines

If you’re restoring a classic car, muscle car or hot rod, it’s a good bet that the motor in it is going to be pretty tired — if it’s still working at all. ATK Engines has been a performance engine builder since 1946 and has an engine combination that will get your project car roaring again. Rebuilding an engine is fun for some, but exhausting and time-consuming for many others. By choosing ATK, you can get everything from a partial build to a drop-in powerplant that’s ready to hit the road or the track.

ATK Remanufactured Engines

If you’re restoring a classic car, muscle car or hot rod, it’s a good bet that the motor in it is going to be pretty tired — if it’s still working at all. ATK Engines has been a performance engine builder since 1946 and has an engine combination that will get your project car roaring again. Rebuilding an engine is fun for some, but exhausting and time-consuming for many others. By choosing ATK, you can get everything from a partial build to a drop-in powerplant that’s ready to hit the road or the track.


High-Performance Classic Car Powerplants

Order your new performance ATK engine from Eastwood and do the job right when it comes to power. Engines are available in three stages depending on your needs and budget. Their short block engine builds can upgrade your existing block or serve as the foundation for a new build. They contain the part of the cylinder block that sits between the head gasket and oil pan. A stage 2 long block ATK engine contains the full block along with the crankshaft, cylinder head and valve train. If you really just want to drop it in and drop the hammer, ATK stage 3 engines come complete right down to the spark plugs.


Fully Warrantied Engines for Restorations

ATK builds GM, Ford and Chrysler engines for all sorts of muscle cars. You can get everything from the Ford 302 HP79C to the Chevy 350 87-95 to fit your vehicle’s factory spec. Every remanufactured engine is fully disassembled, rebuilt and tested to make sure it performs as well as or better than the original factory specs. ATK was also the first builder to offer a warranty on part with that of new engines. Every ATK engine from Eastwood is guaranteed for 24 months with no mileage limit! We also provide free U.S. shipping on most ATK powerplants along with lifetime technical support from our DIY experts.