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  • Forged Small Block Chevy Rotating Assembly, 421 .283 Dome, 400 Mains, 6 Rod
    Forged Small Block Chevy Rotating Assembly, 421 .283 Dome, 400 Mains, 6 Rod
    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. 

    NOTE: A balance rotating assembly option is currently not offered for this package but the proper balancing service can be determined after your order is placed.  If you would like our balancing option service for 395 and 421 engine builds, please call 1-800-979-0122 when placing order.

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

  • Forged Small Block Chevy Rotating Assembly, 421 .283 Dome, 350 Mains, 6 Rod
    Forged Small Block Chevy Rotating Assembly, 421 .283 Dome, 350 Mains, 6 Rod
    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. 

    NOTE: A balance rotating assembly option is currently not offered for this package but the proper balancing service can be determined after your order is placed.  If you would like our balancing option service for 395 and 421 engine builds, please call 1-800-979-0122 when placing order.

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

  • Forged Small Block Chevy Rotating Assembly, 421 Flat Top, 400 Mains, 6 Rod
    Forged Small Block Chevy Rotating Assembly, 421 Flat Top, 400 Mains, 6 Rod
    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. 

    NOTE: A balance rotating assembly option is currently not offered for this package but the proper balancing service can be determined after your order is placed.  If you would like our balancing option service for 395 and 421 engine builds, please call 1-800-979-0122 when placing order.

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

  • Forged Small Block Chevy Rotating Assembly, 421 Flat Top, 350 Mains, 6 Rod
    Forged Small Block Chevy Rotating Assembly, 421 Flat Top, 350 Mains, 6 Rod
    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. 

    NOTE: A balance rotating assembly option is currently not offered for this package but the proper balancing service can be determined after your order is placed.  If you would like our balancing option service for 395 and 421 engine builds, please call 1-800-979-0122 when placing order.

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

  • Forged Small Block Chevy Rotating Assembly, 395 .400 Dome, 350 Mains, 6 Rod
    Forged Small Block Chevy Rotating Assembly, 395 .400 Dome, 350 Mains, 6 Rod
    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. 

    NOTE: A balance rotating assembly option is currently not offered for this package but the proper balancing service can be determined after your order is placed.  If you would like our balancing option service for 395 and 421 engine builds, please call 1-800-979-0122 when placing order.

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

  • Forged Small Block Chevy Rotating Assembly, 383 Dome, H-Beam, 5.7 Rods
    Forged Small Block Chevy Rotating Assembly, 383 Dome, H-Beam, 5.7 Rods
    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 Small Block Chevy Rotating Assembly, 383 Flat Top, H-Beam, 5.7 Rods
    Forged Small Block Chevy Rotating Assembly, 383 Flat Top, H-Beam, 5.7 Rods
    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 Small Block Chevy Rotating Assembly, 395 .063 Dome, 350 Mains, 6 Rod
    Forged Small Block Chevy Rotating Assembly, 395 .063 Dome, 350 Mains, 6 Rod
    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.

    NOTE: A balance rotating assembly option is currently not offered for this package but the proper balancing service can be determined after your order is placed.  If you would like our balancing option service for 395 and 421 engine builds, please call 1-800-979-0122 when placing order.

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

  • Forged Small Block Chevy Rotating Assembly, 350 Flat Top, H-Beam, 5.7 Rods
    Forged Small Block Chevy Rotating Assembly, 350 Flat Top, H-Beam, 5.7 Rods
    x
                Please view the product's page for more information
            
  • Light Forged Small Block Chevy Rotating Assembly, 350 Dome, 5.7 Inch Rods
    Light Forged Small Block Chevy Rotating Assembly, 350 Dome, 5.7 Inch Rods
    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 Small Block Chevy Rotating Assembly, 383 Flat Top, 5.7 In. Rods
    Light Forged Small Block Chevy Rotating Assembly, 383 Flat Top, 5.7 In. Rods
    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 Small Block Chevy Rotating Assembly, 383 Dome, 5.7 Inch Rods
    Light Forged Small Block Chevy Rotating Assembly, 383 Dome, 5.7 Inch Rods
    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 Small Block Chevy Rotating Assembly, 350 Dome, H-Beam, 6 Rod
    Forged Small Block Chevy Rotating Assembly, 350 Dome, H-Beam, 6 Rod
    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 350: 4.000" bore x 3.48" stroke

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

  • Forged Small Block Chevy Rotating Assembly, 383 Flat Top, H-Beam, 6 Rod
    Forged Small Block Chevy Rotating Assembly, 383 Flat Top, H-Beam, 6 Rod
    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 Small Block Chevy Rotating Assembly, 383 Dome, H-Beam, 6 Inch Rods
    Forged Small Block Chevy Rotating Assembly, 383 Dome, H-Beam, 6 Inch Rods
    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 Small Block Chevy Rotating Assembly, 350 Flat Top, H-Beam, 6 Rod
    Forged Small Block Chevy Rotating Assembly, 350 Flat Top, H-Beam, 6 Rod
    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 Street Small Block Chevy 383 Rotating Assembly, 5.7 Inch I-Beam Rods
    Forged Street Small Block Chevy 383 Rotating Assembly, 5.7 Inch I-Beam Rods
    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.

     

     

  • Forged Street Small Block Chevy 377 Rotating Assembly, 5.7 Inch Rods
    Forged Street Small Block Chevy 377 Rotating Assembly, 5.7 Inch Rods
    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.

     

  • Forged Street Small Block Chevy 350 Rotating Assembly, 5.7 Inch I-Beam Rods
    Forged Street Small Block Chevy 350 Rotating Assembly, 5.7 Inch I-Beam Rods
    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.

     

  • Forged Street Small Block Chevy 400 Rotating Assembly, 5.7 Inch I-Beam Rods
    Forged Street Small Block Chevy 400 Rotating Assembly, 5.7 Inch I-Beam Rods
    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 Small Block Chevy Assembly, 434 Dome, 6 Inch Rods, 350 Mains
    Light Forged Small Block Chevy Assembly, 434 Dome, 6 Inch Rods, 350 Mains
    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.

    Choose from standard, .030, or .040 oversize.

    NOTE: These rotating assemblies may require additional charges for heavy metal.

     


  • Forged S/B Chevy Rotating Assy., 434 Flat Top, 350 Main Journal, 6 Rod
    Forged S/B Chevy Rotating Assy., 434 Flat Top, 350 Main Journal, 6 Rod
    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 434: 4.125" bore x 4.00" stroke

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

  • Forged S/B Chevy Rotating Assy., 434 Flat Top, 400 Main Journal, 6 Rod
    Forged S/B Chevy Rotating Assy., 434 Flat Top, 400 Main Journal, 6 Rod
    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 434: 4.125" bore x 4.00" stroke

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

  • Forged Small Block Chevy Rotating Ass., 434 Dome, 400 Main Journal, 6 Rod
    Forged Small Block Chevy Rotating Ass., 434 Dome, 400 Main Journal, 6 Rod
    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 434: 4.125" bore x 4.00" stroke

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

  • Forged Small Block Chevy Rotating Ass., 434 Dome, 350 Main Journal, 6 Rod
    Forged Small Block Chevy Rotating Ass., 434 Dome, 350 Main Journal, 6 Rod
    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 434: 4.125" bore x 4.00" stroke

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

  • Light Forged Small Block Chevy Rotating Assembly, 383 Dome, 6 Inch Rods
    Light Forged Small Block Chevy Rotating Assembly, 383 Dome, 6 Inch Rods
    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.



  • Light Forged Small Block Chevy Rotating Assembly, 350 Dome, 6 Inch Rods
    Light Forged Small Block Chevy Rotating Assembly, 350 Dome, 6 Inch Rods
    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 Small Block Chevy Assembly, 434 Flat Top, 6 Rod, 350 Mains
    Light Forged Small Block Chevy Assembly, 434 Flat Top, 6 Rod, 350 Mains
    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.

    Choose from standard or .020 oversize.

    NOTE: These rotating assemblies may require additional charges for heavy metal.


  • Small Block Chevy Rotating Assembly, 350 Flat Top-4 Valve Relief, 5.7 Rod
    Small Block Chevy Rotating Assembly, 350 Flat Top-4 Valve Relief, 5.7 Rod
    x
                Speedway introduces rotating assembly engine rebuild kits, 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.

    Kits include:

    • Speedway Cast Steel Crankshaft
      • Two-piece rear main
      • 80-60-06 cast steel construction
      • Fatigue-resistant with near forged steel endurance
      • Standard size journals
    • Speedway 5140 I-Beam Claimer Connecting Rods
      • 5140 heat treated steel
      • Shot peened and magnafluxed
      • 5.7" length
      • Press pin
      • 646 grams
    • KB Signature Series Hypereutectic Claimer Pistons
      • Coated skirts
      • Wrist pin lock rings
      • T-5 hypereutectic construction
      • Can be used with press fit or floating wrist pins
  • Light Forged S/B Chevy Assembly, 383 Flat Top, 6 Inch Rods
    Light Forged S/B Chevy Assembly, 383 Flat Top, 6 Inch Rods
    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 Chevy Rotating Assembly, 350 Flat Top, 5.7 Inch Rods
    Premium Small Block Chevy Rotating Assembly, 350 Flat Top, 5.7 Inch Rods
    x
                Please view the product's page for more information
            
  • Premium Small Block Chevy Rotating Assembly, 383 Flat Top, 5.7 Inch Rods
    Premium Small Block Chevy Rotating Assembly, 383 Flat Top, 5.7 Inch Rods
    x
                Speedway introduces premium rotating assembly engine rebuild kits, with an optional  balance job. Includes new 2-pc rear main seal cast steel crank, rods,  pistons rod & main bearings. 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.

  • Premium Small Block Chevy Rotating Assembly, 400 Flat Top, 5.7 Inch Rods
    Premium Small Block Chevy Rotating Assembly, 400 Flat Top, 5.7 Inch Rods
    x
                Speedway introduces premium rotating assembly engine rebuild kits, with an optional  balance job. Includes new 2-pc rear main seal cast steel crank, rods,  pistons rod & main bearings. 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.

  • Premium Small Block Chevy Rotating Assembly, 377 .150 Dome, 5.7 Inch Rods
    Premium Small Block Chevy Rotating Assembly, 377 .150 Dome, 5.7 Inch Rods
    x
                Speedway introduces premium rotating assembly engine rebuild kits, with an optional  balance job. Includes new 2-pc rear main seal cast steel crank, rods,  pistons rod & main bearings. 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.

    NOTE: 377 Kit includes main bearing spacers 

  • Premium Small Block Chevy Rotating Assembly, 377 Flat Top, 5.7 Inch Rods
    Premium Small Block Chevy Rotating Assembly, 377 Flat Top, 5.7 Inch Rods
    x
                Speedway introduces premium rotating assembly engine rebuild kits, with an optional  balance job. Includes new 2-pc rear main seal cast steel crank, rods,  pistons rod & main bearings. 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.

    NOTE: 377 Kit includes main bearing spacers

  • Small Block Chevy Rotating Assembly, 350 Flat Top-2 Valve Relief, 5.7 Rod
    Small Block Chevy Rotating Assembly, 350 Flat Top-2 Valve Relief, 5.7 Rod
    x
                Speedway introduces rotating assembly engine rebuild kits, 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.

  • Small Block Chevy Rotating Assembly, 383 Flat Top-2 Valve Relief, 5.7 Rod
    Small Block Chevy Rotating Assembly, 383 Flat Top-2 Valve Relief, 5.7 Rod
    x
                Speedway introduces rotating assembly engine rebuild kits, 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.

  • Small Block Chevy Rotating Assembly, 383 Flat Top-.110 Inch, 5.7 Rod
    Small Block Chevy Rotating Assembly, 383 Flat Top-.110 Inch, 5.7 Rod
    x
                Speedway introduces rotating assembly engine rebuild kits, 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.

  • Small Block Chevy Rotating Assembly, 377 Flat Top-2 Valve Relief, 5.7 Rod
    Small Block Chevy Rotating Assembly, 377 Flat Top-2 Valve Relief, 5.7 Rod
    x
                Speedway introduces rotating assembly engine rebuild kits, 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.

  • Premium Small Block Chevy Rotating Assembly, 383 .100 Dome, 5.7 Inch Rods
    Premium Small Block Chevy Rotating Assembly, 383 .100 Dome, 5.7 Inch Rods
    x
                Speedway introduces premium rotating assembly engine rebuild kits, with an optional  balance job. Includes new 2-pc rear main seal cast steel crank, rods,  pistons rod & main bearings. 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.

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