Bill Smith
Founder, 1929-2014
Speedy Bill
Since 1952
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America's Oldest Speed Shop ®

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Shop Oval Track Engines At Speedway Motors

Speedway Motors is the circle track engine authority! Whether you have a Ford or Chevy race motor, Speedway has the engine parts you need at the best prices around. Our large assortment of iron cylinder heads, performance camshafts and racing valve train components allows you to tailor your engine to any racing condition. Speedway also has a variety of durable claimer engine kits, oil pumps and oil pans to help keep costs down without sacrificing performance or reliability.

"Oval Track, Crankshaft Kits" Page 1 of 1

  • Light Forged SB Chevy Rotating Assembly, 383 Dome, 6 In Rods
    Light Forged SB Chevy Rotating Assembly, 383 Dome, 6 In Rods
    SKU-9153050
    x
                

    Our lightweight forged rotating assembly engine rebuild kits include a 44-45 lb. Scat Superlight 4340 forged 2-pc rear main seal externally balanced crankshaft, Scat 4340 forged I-beam connecting rods and Mahle pistons complete with wrist pins, locks and rings. Rod and main bearings included. Standard size journals.

    Kit also includes balancing which is done with our state-of-the-art Hines balancer by race mechanics with over 30 years of experience. A kit will ship in 24-48 hours.



  • Premium Small Block Ford 347 Stroker Kits
    Premium Small Block Ford 347 Stroker Kits
    SKU-915349
    x
                

    Get premium components at a superior value with this forged rotating assembly, only from Speedway Motors! These stroker kits include a forged crank, H-beam rods, hypereutectic pistons, rod bearings, and main bearings.

    • Speedway 4340 Forged Steel Crank
      • Precision ground, micro polished journals
      • Heat treated and stress relieved
      • Magnafluxed, X-rayed and sonic tested
      • 360 degree indexed stroke
      • Cross-drilled, chamfered oil supply holes
      • Nitrided journal surfaces
    • 4340 H-beam Connecting Rods
      • 5.4" length
      • .927 pin
      • Chevy bearings
      • ARP bolts
    • Keith Black Hypereutectic Pistons
      • T6 heat treated
      • Available in .030" or .040" oversizes
    • Clevite 77 Rod and Main Bearings
      • 2.1" GM rod bearings
      • Standard 302 Ford main bearings

    NOTE: Piston rings are not included and must be purchased separately. Use ring Style C.

    Due to the many variations in balancers and flywheels, Speedway Motors does not offer balancing services on any Ford crankshafts or rotating assemblies.

  • Labor To Side Clearance Rods, Balance Rotating Assembly, 350/377 Kits
    Labor To Side Clearance Rods, Balance Rotating Assembly, 350/377 Kits
    SKU-91510200
    x
                All balancing is done with our state-of-the-art "hines" balancer by race mechanics with over 30 years of experience. A kit purchased with the optional balance job will ship in 24-48 hours. 


  • Street SB Chevy 383 Rotating Assembly, Dish Dome, 5.7 In Rod
    Street SB Chevy 383 Rotating Assembly, Dish Dome, 5.7 In Rod
    SKU-91510242
    x
                

    These rotating assembly engine rebuild kits are designed for street use and include Keith Black Hypereutectic pistons, Speedway 5140 I-beam rods, main/rod bearings and a Speedway Cast Steel crankshaft. Rings not included. Journals are standard size.

    Due to larger journal side radius on this aftermarket crankshaft, you must use Clevite H-series, King bearings (included in kit) or equivalent.

    These assemblies will require balancing either by us or your machine shop.

    All balancing is done with our state-of-the-art Hines balancer by race mechanics with over 30 years of experience!  A kit purchased with the optional balance job will ship in 24-48 hours.

  • Light Forged SB Chevy Rotating Assem., 350 Flat Top, 6 In Rods
    Light Forged SB Chevy Rotating Assem., 350 Flat Top, 6 In Rods
    SKU-9153010
    x
                

    Our lightweight forged rotating assembly engine rebuild kits include a 44-45 lb. Scat Superlight 4340 forged 2-pc rear main seal crankshaft, Scat 4340 forged I-beam connecting rods and Mahle pistons complete with wrist pins, locks and rings. Rod and main bearings included. Standard size journals.

    All balancing is done with our state-of-the-art Hines balancer by race mechanics with over 30 years of experience. Kit when purchased with the included balance job will ship in 24-48 hours.


  • Light Forged SB Chevy Rotating Assembly, 383 Flat Top, 5.7 In. Rods
    Light Forged SB Chevy Rotating Assembly, 383 Flat Top, 5.7 In. Rods
    SKU-9153035
    x
                

    Our lightweight forged rotating assembly engine rebuild kits include a 44-45 lb. Scat Superlight 4340 forged 2-pc rear main seal crankshaft, Scat 4340 forged I-beam connecting rods and Mahle pistons complete with wrist pins, locks and rings. Rod and main bearings included. Standard size journals.

    All balancing is done with our state-of-the-art Hines balancer by race mechanics with over 30 years of experience. A kit purchased with the optional balance job will ship in 24-48 hours.


  • Speedway Small Block Ford 396 Stroker Kits, I-Beam Rods
    Speedway Small Block Ford 396 Stroker Kits, I-Beam Rods
    SKU-915396
    x
                

    These rotating assemblies are designed for either street or race use and include Keith Black hypereutectic pistons, I-beam rods, and a Scat cast steel crankshaft.

    • Scat cast steel 3.85" stroker crank
      • 80-60-06 cast steel construction
      • Fits early and late blocks
    • Speedway 351W Super Stock I-Beam Rods
      • 5.956" length
      • .912" pin
      • Resized, magnafluxed, clearanced
      • 170,000 psi bolts
    • Keith Black hypereutectic dish pistons
      • T6 heat treated construction
      • Available in .030" or .040" oversizes
    • Clevite main and rod bearings

    NOTE: Piston rings are not included and must be purchased separately.

    Due to the many variations in balancers and flywheels, Speedway Motors does not offer balancing services on any Ford crankshafts or rotating assemblies.

  • Forged Street SB Chevy 383 Rotating Assembly, 6 In I-Beam Rods
    Forged Street SB Chevy 383 Rotating Assembly, 6 In I-Beam Rods
    SKU-9151234
    x
                

    These rotating assembly engine rebuild kits are designed for street use and include Keith Black forged pistons, Scat 4340 Pro-Comp I-beam rods and a Scat 4340 forged crankshaft.

    All Scat 4340 cranks are 2-piece rear main seal, internally balanced and weigh approximately 51-55 lbs.

    These assemblies will require balancing either by us or your machine shop.  All kits can be internally balanced.

    All balancing is done with our state-of-the-art Hines balancer by race mechanics with over 30 years of experience!  A kit purchased with the optional balance job will ship in 24-48 hours. 

    Rings and bearings not included. Journals are standard size. Due to larger journal side radius on this aftermarket crankshaft, you must use Clevite H-series, King bearings or equivalent.

    NOTE: Piston rings are not included and must be purchased separately.

     

     

  • Street SB Chevy 400 Rotating Assembly, Dish Dome, 5.7 In Rod
    Street SB Chevy 400 Rotating Assembly, Dish Dome, 5.7 In Rod
    SKU-91510249
    x
                

    These rotating assembly engine rebuild kits are designed for street use and include Keith Black Hypereutectic pistons, Speedway 5140 I-beam rods, main/rod bearings and a Speedway Cast Steel crankshaft. Rings not included. Journals are standard size.

    Due to larger journal side radius on this aftermarket crankshaft, you must use Clevite H-series, King bearings (included in kit) or equivalent.

    These assemblies will require balancing either by us or your machine shop.

    All balancing is done with our state-of-the-art Hines balancer by race mechanics with over 30 years of experience!  A kit purchased with the optional balance job will ship in 24-48 hours.

  • Forged Street SB Chevy 377 Rotating Assembly, 6 In I-Beam Rods
    Forged Street SB Chevy 377 Rotating Assembly, 6 In I-Beam Rods
    SKU-9151228
    x
                

    These rotating assembly engine rebuild kits are designed for street use and include Keith Black forged pistons, Scat 4340 Pro-Comp I-beam rods and a Scat 4340 forged crankshaft.

    All Scat 4340 cranks are 2-piece rear main seal, internally balanced and weigh approximately 51-55 lbs.

    These assemblies will require balancing either by us or your machine shop.  All kits can be internally balanced.

    All balancing is done with our state-of-the-art Hines balancer by race mechanics with over 30 years of experience!  A kit purchased with the optional balance job will ship in 24-48 hours. 

    Rings not included. Journals are standard size. Due to larger journal side radius on this aftermarket crankshaft, you must use Clevite H-series, King bearings or equivalent.  Includes spacers for main bearings.

    NOTE: Piston rings are not included and must be purchased separately.

     

     

  • Labor To Side Clearance Rods, Balance Rotating Assembly, 383/400 Kits
    Labor To Side Clearance Rods, Balance Rotating Assembly, 383/400 Kits
    SKU-91510201
    x
                Speedway introduces rotating assemblies, with an optional balance job. Includes 2-pc rear main seal cast steel crank, rods and pistons. Cranks are new so they use standard size bearings. 

    All balancing is done with our state-of-the-art "hines" balancer by race mechanics with over 30 years of experience! A kit purchased with the optional balance job will ship in 24-48 hours.

    NOTE: Piston rings are not included and must be purchased separately.

  • Forged Street SB Chevy 400 Rotating Assembly, 6 In I-Beam Rods
    Forged Street SB Chevy 400 Rotating Assembly, 6 In I-Beam Rods
    SKU-9151238
    x
                

    These rotating assembly engine rebuild kits are designed for street use and include Keith Black forged pistons, Scat 4340 Pro-Comp I-beam rods and a Scat 4340 forged crankshaft.

    All Scat 4340 cranks are 2-piece rear main seal, internally balanced and weigh approximately 51-55 lbs.

    These assemblies will require balancing either by us or your machine shop.  All kits can be internally balanced.

    All balancing is done with our state-of-the-art Hines balancer by race mechanics with over 30 years of experience!  A kit purchased with the optional balance job will ship in 24-48 hours. 

    Rings and bearings not included. Journals are standard size. Due to larger journal side radius on this aftermarket crankshaft, you must use Clevite H-series, King bearings or equivalent.

    NOTE: Piston rings are not included and must be purchased separately.

     

     

  • Light Forged SB Chevy Rotating Assem., 350 Flat Top, 5.7 In. Rod
    Light Forged SB Chevy Rotating Assem., 350 Flat Top, 5.7 In. Rod
    SKU-9153005
    x
                

    Our lightweight forged rotating assembly engine rebuild kits include a 44-45 lb. Scat Superlight 4340 forged 2-pc rear main seal crankshaft, Scat 4340 forged I-beam connecting rods and Mahle pistons complete with wrist pins, locks and rings. Rod and main bearings included. Standard size journals.

    All balancing is done with our state-of-the-art Hines balancer by race mechanics with over 30 years of experience. Kit when purchased with the included balance job will ship in 24-48 hours.


  • Light Forged SB Chevy Rotating Assem., 350 Inverted Dome, 5.7 Rod
    Light Forged SB Chevy Rotating Assem., 350 Inverted Dome, 5.7 Rod
    SKU-9153000
    x
                

    Our lightweight forged rotating assembly engine rebuild kits include a 44-45 lb. Scat Superlight 4340 forged 2-pc rear main seal crankshaft, Scat 4340 forged I-beam connecting rods and Mahle pistons complete with wrist pins, locks and rings. Rod and main bearings included. Standard size journals.

    All balancing is done with our state-of-the-art Hines balancer by race mechanics with over 30 years of experience. Kit when purchased with the included balance job will ship in 24-48 hours.

  • Light Forged SB Chevy Rotating Assembly, 383 Dome, 5.7 In Rods
    Light Forged SB Chevy Rotating Assembly, 383 Dome, 5.7 In Rods
    SKU-9153045
    x
                

    Our lightweight forged rotating assembly engine rebuild kits include a 44-45 lb. Scat Superlight 4340 forged 2-pc rear main seal crankshaft, Scat 4340 forged I-beam connecting rods and Mahle pistons complete with wrist pins, locks and rings. Rod and main bearings included. Standard size journals.

    All balancing is done with our state-of-the-art Hines balancer by race mechanics with over 30 years of experience. A kit purchased with the optional balance job will ship in 24-48 hours.


  • Forged Street SB Chevy 383 Rotating Assembly, 5.7 In I-Beam Rods
    Forged Street SB Chevy 383 Rotating Assembly, 5.7 In I-Beam Rods
    SKU-9151232
    x
                

    These rotating assembly engine rebuild kits are designed for street use and include Keith Black forged pistons, Scat 4340 Pro-Comp I-beam rods and a Scat 4340 forged crankshaft.

    All Scat 4340 cranks are 2-piece rear main seal, internally balanced and weigh approximately 51-55 lbs.

    These assemblies will require balancing either by us or your machine shop.  All kits can be internally balanced.

    All balancing is done with our state-of-the-art Hines balancer by race mechanics with over 30 years of experience!  A kit purchased with the optional balance job will ship in 24-48 hours. 

    Rings and bearings not included. Journals are standard size. Due to larger journal side radius on this aftermarket crankshaft, you must use Clevite H-series, King bearings or equivalent.

    NOTE: Piston rings are not included and must be purchased separately.

     

     

  • Light Forged SB Chevy Rotating Assem., 383 Inverted Dome, 5.7 Rod
    Light Forged SB Chevy Rotating Assem., 383 Inverted Dome, 5.7 Rod
    SKU-9153030
    x
                

    Our lightweight forged rotating assembly engine rebuild kits include a 44-45 lb. Scat Superlight 4340 forged 2-pc rear main seal crankshaft, Scat 4340 forged I-beam connecting rods and Mahle pistons complete with wrist pins, locks and rings. Rod and main bearings included. Standard size journals.

    All balancing is done with our state-of-the-art Hines balancer by race mechanics with over 30 years of experience. A kit purchased with the optional balance job will ship in 24-48 hours.


  • Light Forged SB Chevy Rotating Assembly, 350 Dome, 6 In Rods
    Light Forged SB Chevy Rotating Assembly, 350 Dome, 6 In Rods
    SKU-9153020
    x
                

    Our lightweight forged rotating assembly engine rebuild kits include a 44-45 lb. Scat Superlight 4340 forged 2-pc rear main seal crankshaft, Scat 4340 forged I-beam connecting rods and Mahle pistons complete with wrist pins, locks and rings. Rod and main bearings included. Standard size journals.

    All balancing is done with our state-of-the-art Hines balancer by race mechanics with over 30 years of experience. Kit when purchased with the included balance job will ship in 24-48 hours.


  • Speedway Small Block Ford 347 Stroker Kits, I-Beam Rods
    Speedway Small Block Ford 347 Stroker Kits, I-Beam Rods
    SKU-915348
    x
                

    These rotating assemblies are designed for either street or race use and include Keith Black hypereutectic pistons, I-beam rods, and a Scat cast steel crankshaft. 

    • Scat cast steel 3.4" stroker crank
      • 80-60-06 cast steel construction
      • Fits early and late blocks
    • Scat 4340 I-beam connecting rods
      • 5.4" long
      • Bronze bushings
      • Set of 8 rods
    • Keith Black hypereutectic flat top pistons
      • T6 heat treated construction
      • Available in .030" and .040" oversizes
    • Clevite main and rod bearings

    NOTE: Piston rings are not included and must be purchased separately.

    Due to the many variations in balancers and flywheels, Speedway Motors does not offer balancing services on any Ford crankshafts or rotating assemblies.

  • Machining Labor, 350/383 Chevy Balance & Side Clearance 6 Inch Rods
    Machining Labor, 350/383 Chevy Balance & Side Clearance 6 Inch Rods
    SKU-91510202
    x
                

    Must be purchased along with one of our complete engine rotating assemblies (service not available separately). Machining labor includes balancing the entire rotating assembly (flexplate and balancer included with this kit) and side clearancing 8 connecting rods.

    For one-piece rear main blocks.

    Please allow 24-48 hrs for a kit to ship w/ this labor option.

  • Street Small Block Chevy 383 Rotating Assembly, Dish Dome, 6 Inch Rod
    Street Small Block Chevy 383 Rotating Assembly, Dish Dome, 6 Inch Rod
    SKU-91510247
    x
                

    These rotating assembly engine rebuild kits are designed for street use and include Keith Black Hypereutectic pistons, Speedway 5140 I-beam rods, main/rod bearings and a Speedway Cast Steel crankshaft. Rings not included. Journals are standard size.

    Due to larger journal side radius on this aftermarket crankshaft, you must use Clevite H-series, King bearings (included in kit) or equivalent.

    These assemblies will require balancing either by us or your machine shop.

    All balancing is done with our state-of-the-art Hines balancer by race mechanics with over 30 years of experience!  A kit purchased with the optional balance job will ship in 24-48 hours.

  • Premium Small Block Ford 327 Stroker Kits
    $1,299.99
    $1,349.99
    Premium Small Block Ford 327 Stroker Kits
    SKU-915327
    x
                

    Get premium components at a superior value with this forged rotating assembly, only from Speedway Motors! These stroker kits include a forged crank, H-beam rods, hypereutectic pistons, rod bearings, and main bearings.

    • Speedway 4340 Forged Steel Crank
      • Precision ground, micro polished journals
      • Heat treated and stress relieved
      • Magnafluxed, X-rayed and sonic tested
      • 360 degree indexed stroke
      • Cross-drilled, chamfered oil supply holes
      • Nitrided journal surfaces
    • 4340 H-beam Connecting Rods
      • 5.4" length
      • .927 pin
      • Chevy bearings
      • ARP bolts
    • Keith Black Hypereutectic Pistons
      • T6 heat treated
      • Available in .030" or .040" oversizes
    • Clevite 77 Rod and Main Bearings
      • 2.1" GM rod bearings
      • Standard 302 Ford main bearings

    NOTE: Piston rings are not included and must be purchased separately. Use ring Style C.

    Due to the many variations in balancers and flywheels, Speedway Motors does not offer balancing services on any Ford crankshafts or rotating assemblies.

  • Forged Street Small Block Chevy 377 Rotating Assembly, 5.7 Inch Rods
    Forged Street Small Block Chevy 377 Rotating Assembly, 5.7 Inch Rods
    SKU-9151226
    x
                

    These rotating assembly engine rebuild kits are designed for street use and include Keith Black forged pistons, Scat 4340 Pro-Comp I-beam rods and a Scat 4340 forged crankshaft.

    All Scat 4340 cranks are 2-piece rear main seal, internally balanced and weigh approximately 51-55 lbs.

    These assemblies will require balancing either by us or your machine shop.  All kits can be internally balanced.

    All balancing is done with our state-of-the-art Hines balancer by race mechanics with over 30 years of experience!  A kit purchased with the optional balance job will ship in 24-48 hours. 

    Rings and bearings not included. Journals are standard size. Due to larger journal side radius on this aftermarket crankshaft, you must use Clevite H-series, King bearings or equivalent.  Includes spacers for main bearings.

    NOTE: Piston rings are not included and must be purchased separately.

     

  • Premium Ford 302 Rotating Assembly
    Premium Ford 302 Rotating Assembly
    SKU-915305
    x
                

    Get premium components at a superior value with this forged rotating assembly, only from Speedway Motors! These rotating assemblies include a forged crank, H-beam rods, hypereutectic pistons, rod bearings, and main bearings.  

    NOTE: Piston rings are not included and must be purchased separately. Use ring Style A.

    Kit features: 

    • Speedway 4340 Forged Steel Crank
      • 3.00" stroke
      • Precision ground, micro polished journals
      • Heat treated and stress relieved
      • Magnafluxed, X-rayed and sonic tested
      • 360 degree indexed stroke
      • Cross-drilled, chamfered oil supply holes
      • Nitrided journal surfaces
    • Ford Racing 4340 Forged Connecting Rods
      • 5.09" length
      • Beefy construction
      • 5/16" bolts
      • .912 pin
      • Matched set of 8 rods
    • Keith Black Hypereutectic Pistons
      • T6 heat treated
      • Available in .030" or .040" oversizes
      • Ring Style A
    • Clevite 77 Rod and Main Bearings 
  • Light Forged SB Chevy Rotating Assembly, 350 Dome, 5.7 In Rods
    Light Forged SB Chevy Rotating Assembly, 350 Dome, 5.7 In Rods
    SKU-9153015
    x
                

    Our lightweight forged rotating assembly engine rebuild kits include a 44-45 lb. Scat Superlight 4340 forged 2-pc rear main seal crankshaft, Scat 4340 forged I-beam connecting rods and Mahle pistons complete with wrist pins, locks and rings. Rod and main bearings included. Standard size journals.

    All balancing is done with our state-of-the-art Hines balancer by race mechanics with over 30 years of experience. Kit when purchased with the included balance job will ship in 24-48 hours.


  • Garage Sale - 1939-53 Ford Flathead Crankshaft
    Garage Sale
    Garage Sale - 1939-53 Ford Flathead Crankshaft
    SKU-UP32186
    x
                

    These 1939-53 flathead stroker kit rotating assemblies feature new Scat crankshaft. This is the crankshaft only.

     

    This is garage sale priced because it has some scratches from shipping.

     

    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS  

  • Light Forged S/B Chevy Assembly, 383 Flat Top, 6 Inch Rods
    Light Forged S/B Chevy Assembly, 383 Flat Top, 6 Inch Rods
    SKU-9153040
    x
                

    Our lightweight forged rotating assembly engine rebuild kits include a 44-45 lb. Scat Superlight 4340 forged 2-pc rear main seal externally balanced crankshaft, Scat 4340 forged I-beam connecting rods and Mahle pistons complete with wrist pins, locks and rings. Rod and main bearings included. Standard size journals.

    Kit also includes balancing which is done with our state-of-the-art Hines balancer by race mechanics with over 30 years of experience.  A kit will ship in 24-48 hours.



  • KRC Power Steering 38161500 Ford R-Lok 3-Bolt Pro Crank Hub
    KRC Power Steering 38161500 Ford R-Lok 3-Bolt Pro Crank Hub
    SKU-46638161
    x
                

    These Pro Crank Hubs from KRC are designed for Ford 3-bolt racing applications.  They feature a shorter length over the KRC 38161000 model.

    • Pro crank hub
    • Ford R-Lok 3-bolt
  • Forged SB Chevy Rotating Assembly, 350 Flat Top, H-Beam, 6 Rod
    Forged SB Chevy Rotating Assembly, 350 Flat Top, H-Beam, 6 Rod
    SKU-9151230
    x
                

    Speedway introduces forged rotating assemblies, with an optional balance job. Includes new 2-pc rear main seal crank, rods and pistons. Cranks are new so they use standard size bearings. 

    All Scat 4340 cranks are 2-piece rear main seal, internally balanced and weigh approximately 51-55 lbs.  All balancing is done with our state-of-the-art Hines balancer by race mechanics with over 30 years of experience!  A kit purchased with the optional balance job will ship in 24-48 hours. These rotating assembly engine rebuild kits may require additional charges for heavy metal.

    If you are going to run this crank in a sprint car motor, you must have the crank flange turned down prior to balancing the crank to allow it to go through the motor plate.

    Chevy 383: 4.000" bore x 3.75" stroke

    NOTE: Piston rings are not included and must be purchased separately. Use Style C rings.

  • Forged SB Chevy Rotating Assembly, 350 Flat Top, H-Beam, 5.7 Rods
    Forged SB Chevy Rotating Assembly, 350 Flat Top, H-Beam, 5.7 Rods
    SKU-9151220
    x
                Please view the product's page for more information
            
  • Forged Street SB Chevy 350 Rotating Assembly, 5.7 In I-Beam Rods
    Forged Street SB Chevy 350 Rotating Assembly, 5.7 In I-Beam Rods
    SKU-9151222
    x
                

    These rotating assembly engine rebuild kits are designed for street use and include Keith Black forged pistons, Scat 4340 Pro-Comp I-beam rods and a Scat 4340 forged crankshaft.

    All Scat 4340 cranks are 2-piece rear main seal, internally balanced and weigh approximately 51-55 lbs.

    These assemblies will require balancing either by us or your machine shop.  All kits can be internally balanced.

    All balancing is done with our state-of-the-art Hines balancer by race mechanics with over 30 years of experience!  A kit purchased with the optional balance job will ship in 24-48 hours. 

    Rings and bearings not included. Journals are standard size. Due to larger journal side radius on this aftermarket crankshaft, you must use Clevite H-series, King bearings or equivalent.

    NOTE: Piston rings are not included and must be purchased separately.

     

  • Street Small Block Chevy 377 Rotating Assembly, Dish Dome, 6 Inch Rod
    Street Small Block Chevy 377 Rotating Assembly, Dish Dome, 6 Inch Rod
    SKU-91510232
    x
                

    These rotating assembly engine rebuild kits are designed for street use and include Keith Black Hypereutectic pistons, Speedway 5140 I-beam rods, main/rod bearings and a Speedway Cast Steel crankshaft. Rings not included. Journals are standard size.  Includes spacers for main bearings.

    Due to larger journal side radius on this aftermarket crankshaft, you must use Clevite H-series, King bearings (included in kit) or equivalent.

    These assemblies will require balancing either by us or your machine shop.

    All balancing is done with our state-of-the-art Hines balancer by race mechanics with over 30 years of experience!  A kit purchased with the optional balance job will ship in 24-48 hours.

  • Forged Street SB Chevy 400 Rotating Assembly, 5.7 In I-Beam Rods
    Forged Street SB Chevy 400 Rotating Assembly, 5.7 In I-Beam Rods
    SKU-9151236
    x
                

    These rotating assembly engine rebuild kits are designed for street use and include Keith Black forged pistons, Scat 4340 Pro-Comp I-beam rods and a Scat 4340 forged crankshaft.

    All Scat 4340 cranks are 2-piece rear main seal, internally balanced and weigh approximately 51-55 lbs.

    These assemblies will require balancing either by us or your machine shop.  All kits can be internally balanced.

    All balancing is done with our state-of-the-art Hines balancer by race mechanics with over 30 years of experience!  A kit purchased with the optional balance job will ship in 24-48 hours. 

    Rings and bearings not included. Journals are standard size. Due to larger journal side radius on this aftermarket crankshaft, you must use Clevite H-series, King bearings or equivalent.

    NOTE: Piston rings are not included and must be purchased separately.

     

     

  • Street Small Block Chevy 400 Rotating Assembly, Dish Dome, 6 Inch Rod
    Street Small Block Chevy 400 Rotating Assembly, Dish Dome, 6 Inch Rod
    SKU-91510252
    x
                

    These rotating assembly engine rebuild kits are designed for street use and include Keith Black Hypereutectic pistons, Speedway 5140 I-beam rods, main/rod bearings and a Speedway Cast Steel crankshaft. Rings not included. Journals are standard size.

    Due to larger journal side radius on this aftermarket crankshaft, you must use Clevite H-series, King bearings (included in kit) or equivalent.

    These assemblies will require balancing either by us or your machine shop.

    All balancing is done with our state-of-the-art Hines balancer by race mechanics with over 30 years of experience!  A kit purchased with the optional balance job will ship in 24-48 hours.

  • Speedway Small Block Ford 347 Stroker Kits, H-Beam Rods
    Speedway Small Block Ford 347 Stroker Kits, H-Beam Rods
    SKU-915347
    x
                

    These rotating assemblies are designed for either street or race use and include Keith Black hypereutectic pistons, H-beam rods, and a Scat cast steel crankshaft. 

    • Scat cast steel 3.4" stroker crank
      • 80-60-06 cast steel construction
      • Fits early and late blocks
    • Scat 4340 H-beam connecting rods
      • 5.4" long
      • Bronze bushings
      • Set of 8 rods
    • Keith Black hypereutectic flat top pistons
      • T6 heat treated construction
      • Available in .030" and .040" oversizes
    • Clevite main and rod bearings

    NOTE: Piston rings are not included and must be purchased separately.

    Due to the many variations in balancers and flywheels, Speedway Motors does not offer balancing services on any Ford crankshafts or rotating assemblies.

  • Speedway Small Block Ford 396 Stroker Kits, H-Beam Rods
    Speedway Small Block Ford 396 Stroker Kits, H-Beam Rods
    SKU-915397
    x
                

    These rotating assemblies are designed for either street or race use and include Keith Black hypereutectic pistons, H-beam rods, and a Scat cast steel crankshaft.

    • Scat Cast Steel 3.85" stroker crank
      • 80-60-06 cast steel construction
      • Fits early and late blocks
    • Scat 4340 H-beam connecting rods
      • 5.955" length
      • .912" pin
      • Bronze bushings
      • ARP bolts
    • Keith Black Hypereutectic Dish Pistons
      • T6 heat treated construction
      • Available in .030" or .040" oversizes
    • Clevite main and rod bearings

    NOTE: Piston rings (Style A rings) are not included and must be purchased separately.

    Due to the many variations in balancers and flywheels, Speedway Motors does not offer balancing services on any Ford crankshafts or rotating assemblies.

  • Forged Street SB Chevy 350 Rotating Assembly, 6 In I-Beam Rods
    Forged Street SB Chevy 350 Rotating Assembly, 6 In I-Beam Rods
    SKU-9151224
    x
                

    These rotating assembly engine rebuild kits are designed for street use and include Keith Black forged pistons, Scat 4340 Pro-Comp I-beam rods and a Scat 4340 forged crankshaft.

    All Scat 4340 cranks are 2-piece rear main seal, internally balanced and weigh approximately 51-55 lbs.

    These assemblies will require balancing either by us or your machine shop.  All kits can be internally balanced.

    All balancing is done with our state-of-the-art Hines balancer by race mechanics with over 30 years of experience!  A kit purchased with the optional balance job will ship in 24-48 hours. 

    Rings and bearings not included. Journals are standard size. Due to larger journal side radius on this aftermarket crankshaft, you must use Clevite H-series, King bearings or equivalent.

    NOTE: Piston rings are not included and must be purchased separately.

     

  • Machining Labor, 383 Chevy Balance & Side Clearance 5.7 Inch Rods
    Machining Labor, 383 Chevy Balance & Side Clearance 5.7 Inch Rods
    SKU-91510204
    x
                

    Must be purchased along with one of our complete engine rotating assemblies (service not available separately). Machining labor includes balancing the entire rotating assembly (flexplate and balancer included with this kit) and side clearancing 8 connecting rods.

    For one-piece rear main blocks.

    Please allow 24-48 hrs for a kit to ship w/ this labor option.

  • Street Small Block Chevy 350 Rotating Assembly, Dish Dome, 6 Inch Rod
    Street Small Block Chevy 350 Rotating Assembly, Dish Dome, 6 Inch Rod
    SKU-91510227
    x
                

    These rotating assembly engine rebuild kits are designed for street use and include Keith Black Hypereutectic pistons, Speedway 5140 I-beam rods, main/rod bearings, and a Speedway Cast Steel crankshaft. Rings not included. Journals are standard size.

    Due to larger journal side radius on this aftermarket crankshaft, you must use Clevite H-series, King bearings (included in kit) or equivalent.

    These assemblies will require balancing either by us or your machine shop.

    All balancing is done with our state-of-the-art Hines balancer by race mechanics with over 30 years of experience!  A kit purchased with the optional balance job will ship in 24-48 hours.