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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 LS 408 Boost/Nitrous Short  Block 24 Tooth – 18cc Dished SP38-B Engine

    ATK Chevy LS 408 Boost/Nitrous Short Block 24 Tooth – 18cc Dished SP38-B Engine

    SP38-B ATK Chevy LS 408 Boost/Nitrous Short Block 24 Tooth -18cc Dished
    $4,408.99
    SP38-B ATK Chevy LS 408 Boost/Nitrous Short Block 24 Tooth -18cc Dished
    $4,408.99
  • ATK Chevy LQ9 Gen IV 408 Boost/Nitrous Short Block 58 Tooth -29cc Dished SP36-G4-B

    ATK Chevy LQ9 Gen IV 408 Boost/Nitrous Short Block 58 Tooth -29cc Dished SP36-G4-B

    ATK Chevy LQ9 Gen IV 408 Short Block 58 Tooth
    $4,624.99
    ATK Chevy LQ9 Gen IV 408 Short Block 58 Tooth
    $4,624.99
  • ATK Chevy 540CI Engine 660+ HP Mid Dress HP42M

    ATK Chevy 540CI Engine 660+ HP Mid Dress HP42M

    ATK HP42M Chevy 540CI Engine 650HP
    $11,245.99
    ATK HP42M Chevy 540CI Engine 650HP
    $11,245.99
  • ATK Chevy 540CI Engine 660+ HP Base HP42

    ATK Chevy 540CI Engine 660+ HP Base HP42

    ATK HP42 Chevy 540CI Engine 650HP
    $10,479.99
    ATK HP42 Chevy 540CI Engine 650HP
    $10,479.99
  • ATK Chevy 489 Stroker Engine 565HP Mid Dress HP411PM

    ATK Chevy 489 Stroker Engine 565HP Mid Dress HP411PM

    ATK HP411PM Chevy 489 Stroker Engine 565HP
    $7,968.99
    ATK HP411PM Chevy 489 Stroker Engine 565HP
    $7,968.99
  • 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
    SP38-G4-B ATK Chevy LQ9 Gen IV 408 Boost/Nitrous Short Block 24 Tooth -18cc Dished
    $5,149.99
  • 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
    ATK SP32-G4 Chevy LQ9 Gen IV 408 Stroker Short Block
    $4,624.99
  • ATK LS 408 Stroker Engine 600HP LQ4 Iron LS01C

    ATK LS 408 Stroker Engine 600HP LQ4 Iron LS01C

    ATK LS01C LS 408 Stroker Engine 600HP
    $9,918.99
    ATK LS01C LS 408 Stroker Engine 600HP
    $9,918.99
  • ATK Chevy LM7 383CI Short Block -15cc Dished Pistons 24 Tooth SP78 Engine

    ATK Chevy LM7 383CI Short Block -15cc Dished Pistons 24 Tooth SP78 Engine

    SP78 ATK Chevy LM7 383CI Short Block -15cc Dished Pistons 24 Tooth
    $3,420.99
    SP78 ATK Chevy LM7 383CI Short Block -15cc Dished Pistons 24 Tooth
    $3,420.99
  • 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
    SP38-G4 ATK Chevy LQ9 Gen IV 408 Stroker Short Block 24 Tooth -18cc Dished
    $4,624.99
  • 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
    ATK SP32-B Chevy LS 408 Short Block
    $4,408.99
  • ATK Chevy 350CI Engine 345HP Complete HP98C

    ATK Chevy 350CI Engine 345HP Complete HP98C

    HP98C ATK Chevy 350CI Complete Engine 345HP
    $3,862.99
    HP98C ATK Chevy 350CI Complete Engine 345HP
    $3,862.99
  • ATK Chevy LM7 383CI Short Block -8cc Dished Pistons 24 Tooth SP77 Engine

    ATK Chevy LM7 383CI Short Block -8cc Dished Pistons 24 Tooth SP77 Engine

    SP77 ATK Chevy LM7 383CI Short Block -8cc Dished Pistons 24 Tooth
    $3,677.99
    SP77 ATK Chevy LM7 383CI Short Block -8cc Dished Pistons 24 Tooth
    $3,677.99
  • 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
    ATK SP32 Chevy LS 408 Short Block 58 Tooth Flat Top
    $4,006.99
  • ATK New Chevy 350CI Engine 315HP Complete HP92C

    ATK New Chevy 350CI Engine 315HP Complete HP92C

    HP92C ATK New Chevy 350CI 315HP Complete Engine Long Block
    $4,376.99
    HP92C ATK New Chevy 350CI 315HP Complete Engine Long Block
    $4,376.99
  • 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
    SP40-G4-B ATK Chevy LQ9 Gen IV 408 Boost/Nitrous Short Block 24 Tooth -29cc Dished
    $5,149.99
  • 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
    SP38 ATK Chevy LS 408 Short Block 24 Tooth -18cc Dished
    $4,006.99
  • 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
    ATK SP31-G4-B Chevy LQ9 Gen IV 408 Short Block 18cc
    $5,149.99
  • 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 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
    SP40-G4 ATK Chevy LQ9 Gen IV 408 Stroker Short Block 24 Tooth -29cc Dished
    $4,624.99
  • 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
    SP37-G4-B ATK Chevy LQ9 Gen IV 408 Boost/Nitrous Short Block 24 Tooth -10cc Dished
    $5,149.99
  • ATK Chevy LQ9 Gen IV 408 Stroker Short Block 58 Tooth -18cc Dished SP31-G4 Engine

    ATK Chevy LQ9 Gen IV 408 Stroker Short Block 58 Tooth -18cc Dished SP31-G4 Engine

    ATK SP31-G4 Chevy LQ9 Gen IV 408 Stroker Short Block 18cc
    $4,624.99
    ATK SP31-G4 Chevy LQ9 Gen IV 408 Stroker Short Block 18cc
    $4,624.99
  • ATK Chevy LQ9 Gen IV 408 Boost/Nitrous Short Block Engine 58 Tooth -29cc Dished SP36-G4-B

    ATK Chevy LQ9 Gen IV 408 Boost/Nitrous Short Block Engine 58 Tooth -29cc Dished SP36-G4-B

    ATK Chevy LQ9 Gen IV 408 Short Block 58 Tooth
    $5,149.99
    ATK Chevy LQ9 Gen IV 408 Short Block 58 Tooth
    $5,149.99
  • ATK Chevy LS 408 Boost/Nitrous Short Block 24 Tooth -29cc Dished SP40-B Engine

    ATK Chevy LS 408 Boost/Nitrous Short Block 24 Tooth -29cc Dished SP40-B Engine

    SP40-B ATK Chevy LS 408 Boost/Nitrous Short Block 24 Tooth -29cc Dished
    $4,408.99
    SP40-B ATK Chevy LS 408 Boost/Nitrous Short Block 24 Tooth -29cc Dished
    $4,408.99
  • 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
    SP37-G4 ATK Chevy LQ9 Gen IV 408 Stroker Short Block 24 Tooth -10cc Dished
    $4,624.99
  • ATK Chevy LS 408 Boost/Nitrous Short Block 58 Tooth -18cc Dished SP31-B Engine

    ATK Chevy LS 408 Boost/Nitrous Short Block 58 Tooth -18cc Dished SP31-B Engine

    ATK SP31-B Chevy LS 408 Boost/Nitrous Short Block
    $4,408.99
    ATK SP31-B Chevy LS 408 Boost/Nitrous Short Block
    $4,408.99
  • ATK Chevy LS 408 Short Block 24 Tooth -29cc Dished SP40 Engine

    ATK Chevy LS 408 Short Block 24 Tooth -29cc Dished SP40 Engine

    SP40 ATK Chevy LS 408 Short Block 24 Tooth -29cc Dished
    $3,865.99
    SP40 ATK Chevy LS 408 Short Block 24 Tooth -29cc Dished
    $3,865.99
  • ATK Chevy LS 408 Boost/Nitrous Short Block 24 Tooth -10cc Dished SP37-B Engine

    ATK Chevy LS 408 Boost/Nitrous Short Block 24 Tooth -10cc Dished SP37-B Engine

    SP37-B ATK Chevy LS 408 Boost/Nitrous Short Block 24 Tooth -10cc Dished
    $4,408.99
    SP37-B ATK Chevy LS 408 Boost/Nitrous Short Block 24 Tooth -10cc Dished
    $4,408.99
  • ATK Chevy LS 408 Short Block 58 Tooth -18cc Dished SP31 Engine

    ATK Chevy LS 408 Short Block 58 Tooth -18cc Dished SP31 Engine

    ATK SP31 Chevy LS 408 Short Block 58 Tooth -18cc
    $3,889.99
    ATK SP31 Chevy LS 408 Short Block 58 Tooth -18cc
    $3,889.99
  • ATK Chevy LQ9 Gen IV 370CI Short Block 58 Tooth -11cc Dished SP96-G4 Engine

    ATK Chevy LQ9 Gen IV 370CI Short Block 58 Tooth -11cc Dished SP96-G4 Engine

    ATK SP96-G4 Chevy LQ9 Gen IV 370CI Short Block 58 Tooth -11cc Dished
    $3,832.99
    ATK SP96-G4 Chevy LQ9 Gen IV 370CI Short Block 58 Tooth -11cc Dished
    $3,832.99
  • ATK Chevy LQ9 Gen IV 408 Boost/Nitrous Short Block 24 Tooth Flat Top SP39-G4-B Engine

    ATK Chevy LQ9 Gen IV 408 Boost/Nitrous Short Block 24 Tooth Flat Top SP39-G4-B Engine

    SP39-G4-B ATK Chevy LQ9 Gen IV 408 Boost/Nitrous Short Block 24 Tooth Flat Top
    $5,149.99
    SP39-G4-B ATK Chevy LQ9 Gen IV 408 Boost/Nitrous Short Block 24 Tooth Flat Top
    $5,149.99
  • ATK Chevy LS 408 Short Block 24 Tooth -10cc Dished SP37 Engine

    ATK Chevy LS 408 Short Block 24 Tooth -10cc Dished SP37 Engine

    ATK SP37 Chevy LS 408 Short Block -10cc
    $4,006.99
    ATK SP37 Chevy LS 408 Short Block -10cc
    $4,006.99
  • ATK Chevy LQ9 Gen IV 408 Boost/Nitrous Short Block 58 Tooth -10cc Dished SP26-G4-B Engine

    ATK Chevy LQ9 Gen IV 408 Boost/Nitrous Short Block 58 Tooth -10cc Dished SP26-G4-B Engine

    ATK SP26-G4-B Chevy LQ9 Gen IV 408 Boost/Nitrous Short Block
    $5,149.99
    ATK SP26-G4-B Chevy LQ9 Gen IV 408 Boost/Nitrous Short Block
    $5,149.99
  • ATK Chevy LQ9 Gen IV 370CI Short Block 58 Tooth Flat Top SP95-G4 Engine

    ATK Chevy LQ9 Gen IV 370CI Short Block 58 Tooth Flat Top SP95-G4 Engine

    ATK SP95-G4 Chevy LQ9 Gen IV 370CI Short Tooth Flat Top
    $4,119.99
    ATK SP95-G4 Chevy LQ9 Gen IV 370CI Short Tooth Flat Top
    $4,119.99
  • ATK Chevy LQ9 Gen IV 408 Stroker Short Block 24 Tooth Flat Top SP39-G4 Engine

    ATK Chevy LQ9 Gen IV 408 Stroker Short Block 24 Tooth Flat Top SP39-G4 Engine

    SP39-G4 ATK Chevy LQ9 Gen IV 408 Stroker Short Block 24 Tooth Flat Top
    $4,624.99
    SP39-G4 ATK Chevy LQ9 Gen IV 408 Stroker Short Block 24 Tooth Flat Top
    $4,624.99
  • ATK Chevy LS 408 Boost/Nitrous Short Block 58 Tooth -29cc Dished SP36-B Engine

    ATK Chevy LS 408 Boost/Nitrous Short Block 58 Tooth -29cc Dished SP36-B Engine

    ATK SP36-B Chevy LS 408 Short Block
    $4,408.99
    ATK SP36-B Chevy LS 408 Short Block
    $4,408.99
  • 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
    ATK SP94-G4 Chevy LQ9 Gen IV 370CI Short Block -11cc
    $3,832.99
  • ATK Chevy LQ9 Gen IV 408 Stroker Short Block 58 Tooth -10cc Dished SP26-G4 Engine

    ATK Chevy LQ9 Gen IV 408 Stroker Short Block 58 Tooth -10cc Dished SP26-G4 Engine

    ATK SP26-G4 Chevy LQ9 Gen IV 408 Stroker Short Block 10cc
    $4,624.99
    ATK SP26-G4 Chevy LQ9 Gen IV 408 Stroker Short Block 10cc
    $4,624.99
  • ATK Chevy LS 408 Boost/Nitrous Short Block 24 Tooth Flat Top SP39-B Engine

    ATK Chevy LS 408 Boost/Nitrous Short Block 24 Tooth Flat Top SP39-B Engine

    SP39-B ATK Chevy LS 408 Boost/Nitrous Short Block 24 Tooth Flat Top
    $4,408.99
    SP39-B ATK Chevy LS 408 Boost/Nitrous Short Block 24 Tooth Flat Top
    $4,408.99
  • ATK Chevy LS 408 Short Block 58 Tooth -29cc Dished SP36 Engine

    ATK Chevy LS 408 Short Block 58 Tooth -29cc Dished SP36 Engine

    ATK SP36 Chevy LS 408 Short Block 29cc
    $3,889.99
    ATK SP36 Chevy LS 408 Short Block 29cc
    $3,889.99

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