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Founder, 1929-2014
Speedy Bill
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Oval Track

Browse our wining racing and performance auto parts.

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Oval Track
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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, Rotating Assemblies

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    This cylinder block complete rotating assembly is just what you need to get your Small Block 305 Chevy performing at its best.  Designed for use with Sprint and Oval Track racing applications, this kit comes with crankshaft, connecting rods, pistons, rings, and all bearings necessary.

    Kit Includes:

    • Callies SAF113-CM S/B Chevy 350 Crankshaft, Compstar 4340, 5.7 Rod
      • Material is precisely located to yield the greatest advantage in terms of both strength to weight, and balance ability.
      • Properly placed counterweights to improve balance and reduce bearing loads
      • Rough machined forgings in a process that includes double stress relief operations that make these crankshafts very dimensionally stable.
      • Hardened with a deep nitride, Compstar cranks are ideal for all types of abusive racing environments
      • All rod journals are drilled and counterweights are profiled for piston clearance.
      • With a consistent grind and polish, along with precise stroke and index, you will see why we say these crankshafts are Compstar Correct!
    • MAHLE Small Block Chevy 305 PowerPak Pistons
      • Race proven lightweight forged design that are complete with rings, wrist pins, and locks
      • Made from 4032 aluminum alloy to allow for tighter cylinder to wall clearances, and improved temperature stability
      • Forged piston for performance applications Fully-machined crown
      • Grafal anti-Friction coating on skirts
      • Phosphate-coated to reduce micro-welding and pin galling
      • Pin bores finished on CNC boring equipment
      • Deburred
      • High strength, light weight steel pins
      • Race proven round wire locks
      • Low drag ring pak
      • Lightweight slipper kirt forgings
      • 1.5, 1.5, 3.0mm file fit performance ring set included. For 305 c.i. S/B Chevy (3.736" bore x 3.48" stroke)
        • C/R 58cc:  10.0
        • C/R 64cc:  9.3
        • C/R 70cc:  8.7

    Notes:

    1) Mahle’s Grafal skirt coating reduces drag, scuffing, friction and cylinder bore wear; reduces piston noise.

    2) Phosphate coating provides the grey appearance to the Mahle piston. This dry lubricant coating (not to be confused with a thermal film coating) provides a lubricant film in the pin bores and ring grooves until the oiling system of the engine reaches operating pressure; particularly useful during the initial start-up or break-in of engines to protect against galling and microwelding. The piston crown is still machineable.

    3) The location to measure piston-to-wall clearance for each application. This point is calculated from the bottom of the piston skirt and indicates the widest part of the piston and thus where to measure.

    • Comp Height:  1.550" 
    • Pin Diameter:  .927"
    • Clearance Guide:
      • *Meas. = 0.894
      • Min = 0.0025
      • Max = 0.0033
    • King HP Series 1969-Up Small Block Chevy Rod Bearings
      • S/B Chevy Large Journal 350/400 - 2.100" Rods
      • Bi-metal aluminum silicon alloy featuring fine micro-bore finish
      • Mains and rods are narrowed for large radius crankshafts
      • Greater rod bearing height improves bearing-to-bore contact/heat transfer and reduces spin potential at high RPM
      • 0.015" thick top layer for superior macro particle embedability and conformability
      • 40 Vickers hardness to resist overlay migration and extrusion
      • 450°F heat threshold for superior protection against friction and overheating
    • King HP Series Chevy 350 Main Bearings
      • Bi-metal aluminum silicon alloy featuring fine micro-bore finish
      • Mains and rods are narrowed for large radius crankshafts
      • Mains are 3/4 grooved for improved oiling to the rod journals
      • Greater rod bearing height improves bearing-to-bore contact/heat transfer and reduces spin potential at high RPM
      • 0.015" thick top layer for superior macro particle embedability and conformability
      • 40 Vickers hardness to resist overlay migration and extrusion
      • 450°F heat threshold for superior protection against friction and overheating

    Application:

    • High-load, short-duration racing such as drag racing, tractor pulls, monster trucks, etc. 
    • Medium-load, long-duration racing such as circle track engines using nodular cast iron crankshafts
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                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.

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    $624.99 $609.99
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                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.

    Go to Product Page
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    $624.99 $599.99
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                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.

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

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    These forged 4340 steel Scat 305 Small Block Chevy rotating assemblies feature I-beam connecting rods, an internally balanced forged crankshaft, and are ready for your next circle track racing engine.

    • Scat Forged crankshaft has been internally balanced
    • Scat Pro series rods
    • Mahle flat top pistons
    • Mahle rings
    • Clevite rod and main bearings
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    $579.99 $569.99
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                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
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    $849.99 $839.99
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                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.

    Go to Product Page
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    $649.99 $634.99
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    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.

    Go to Product Page

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