Bill Smith
Founder, 1929-2014
Speedy Bill
Since 1952
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Shop Classic Truck Engines At Speedway Motors

Speedway Motors has high performance classic truck engine parts at everyday low prices. Whether you are building a Small Block Chevy or Ford Flathead, Speedway has you covered with thousands of parts in stock, ready to ship. With everything from pison sets to camshafts, Speedway can feed your need for speed! Complete classic pickup truck crate engines of multiple sizes, like Chevy 305, 350, 383 and others, are available at great prices! We also have a large selection of cylinder heads, crankshafts and roller rocker arms, so make Speedway your classic truck performance engine solution.

"Classic Truck, Cylinder Block Components" Page 1 of 18

  • King HP Series 1969-Up Small Block Chevy Rod Bearings
    King HP Series 1969-Up Small Block Chevy Rod Bearings
    SKU-910807HP
    x
                
    • 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
  • Flathead Cylinder Head Stud Kit
    Flathead Cylinder Head Stud Kit
    SKU-91015310
    x
                

    Performance engine builders know that head studs are superior to bolts, and this is especially the case on Flathead Ford and Mercury V8s. Flathead decks are thin and their threads are easily stripped. By installing studs, you avoid damaging the threads in the block through repeated use. The combination of the studs' fine outer threads and hardened washers also prevents galling and ensures accurate torque readings, particularly on aluminum heads.

    • Studs utilize superior "pull down torque"
    • Properly fastens and torques both aluminum and iron heads

    910-15310 Instructions (PDF)

  • 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.



  • Dart 31161111 Special High Performance Chevy Block, 4.00 Inch Bore
    Dart 31161111 Special High Performance Chevy Block, 4.00 Inch Bore
    SKU-30431611
    x
                

    Dart's Special High Performance (SHP) small-block meets the need for an affordable, precision-machined cast-iron block with superior features. Designed for high-performance and heavy-duty applications producing up to 600 horsepower, the SHP block is the ideal starting point for hot rodders, drag racers, circle track competitors, off-roaders, and high-performance marine enthusiasts. The SHP block as all the features needed without spending the big bucks and having to wait on your machine shop.

    • All new, precision machined
    • Cast from high nickel iron
    • Priority main oiling system
    • Siamese 4.000" bores
    • At 4.165" bore, .230" wall thickness
    • Clearance for 3.75" stroke w/ steel rods
    • Decks parallel within .002"
    • Made in USA
    • Blind head bolt holes
    • 350 main journals
    • Splayed 4-bolt center main caps
    • Two piece rear main seal
    • Accepts OEM roller rockers and cams
    • Uses 1981-85 oil pans & dipsticks
    • Accepts standard starters and bellhousings

    Dart SHP Block Instructions (PDF)

  • Speedway Plasma Moly Piston Rings, 4.00 Bore, Style B
    Speedway Plasma Moly Piston Rings, 4.00 Bore, Style B
    SKU-9159968
    x
                

    Speedway premium Plasma Moly piston rings work with either gas or alcohol fuels, handle 8000+ rpm, and up to 14:1 compression.

    Ring Style Chart (GIF)

  • Speedway Small Block Chevy 350 Fluid Crank Damper, 6.25 Inch
    Speedway Small Block Chevy 350 Fluid Crank Damper, 6.25 Inch
    SKU-91015342
    x
                

    Balancer for Small Block Chevy 350 c.i. V-8. Degreed from 10o ATDC to 50o BTDC.  SFI 18.1 certified.

  • Scat 2-350-5700-2100-QL Q-Lite S/B Chevy Forged H-Beam Rods, 5.7 Inch
    Scat 2-350-5700-2100-QL Q-Lite S/B Chevy Forged H-Beam Rods, 5.7 Inch
    SKU-91015238
    x
                

    Premium Scat forged Q-Lite H-beam rods with ARP 2000 3/8" cap screws

    • Lightest H-beam design available without sacrificing strength
    • Special doweled cap
  • SB 383 Chevy Rotating Assem., One Piece, .150 Solid Dome, 5.7 Rod
    SB 383 Chevy Rotating Assem., One Piece, .150 Solid Dome, 5.7 Rod
    SKU-9151033
    x
                

    Speedway introduces forged rotating assembly engine rebuild kits, with an optional balance job. Includes new crank, rods and pistons. Crankshaft will make use of standard size bearings.

    New one piece rear main cast steel crank. Standard size journals. Hyperuetectic piston set and Speedway Super Stock rods. ARP rod bolts.

    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.
  • Clevite 77 Ford 351W Rod Bearings
    Clevite 77 Ford 351W Rod Bearings
    SKU-757CB831P
    x
                

    Connecting rod bearings for Ford 351W engines. Available in standard, .001", .010", .020", and .030" sizes.

  • 1970-90 Chevy 454 Harmonic Balancer, 8 Inch, Black
    1970-90 Chevy 454 Harmonic Balancer, 8 Inch, Black
    SKU-57523401
    x
                

    Big block Chevy 454 c.i. V-8 (1970-1990) stock-type replacement harmonic balancer.

    • 8.00" O.D. 
    • External Balance
    • NOT SFI approved
  • KB Chevy 377/400 Hyperutectic Pistons, Flat Top, 5.7/5.565 Rod
    KB Chevy 377/400 Hyperutectic Pistons, Flat Top, 5.7/5.565 Rod
    SKU-474172
    x
                

    Keith Black Hyperutectic pistons are favored for their improved power and reduced scuffing. The unique design & manufacturing processes combine to produce a rigid piston, which will rock less in the bore improving ring seal. These T-5 heat treated pistons also offer reduced thermal expansion, which allows you to run tighter clearances and allows the piston rings to seal better and minimize blow-by.

    For Chevy 377 c.i. (4.125" bore x 3.48" stroke x 5.7" rod) and Chevy 400 c.i. (4.125" bore x 3.75" stroke x 5.565").

    • 390 Hypereutectic alloy
    • Fully machined crowns and valve reliefs
    • Drilled oil drain backs
    • Full floating wrist pins
    • Triple wound spiral locks
    • Reflective alloy allows 2% power increase
    • Quench dome technology minimizes deterioration
    • Zero deck quench designs
    • Lightweight wrist pins

    Ring Style Chart (GIF)

    474-172 Instructions (PDF)

  • Professional Products Small Block Ford Harmonic Balancers
    Professional Products Small Block Ford Harmonic Balancers
    SKU-91015365
    x
                Please view the product's page for more information
            
  • 1939-53 Flathead Ford V8 4-Ring Pistons, 3-3/4 Stroke, .060 Over
    1939-53 Flathead Ford V8 4-Ring Pistons, 3-3/4 Stroke, .060 Over
    SKU-91015900
    x
                

    Original flathead pistons used four rings, were somewhat round, had questionable wrist pins and locks and were made of cast iron. These pressure-cast aluminum pistons share the four-ring design, but are cam ground and use modern steel wrist pins and real snap rings. They’re a great upgrade when rebuilding your 1939-1953 flathead Ford or Mercury V8 engine.

    Sizing based on original 3.188" bore. Fits .060" overbore size and 3.75" stroke crank. Sold as a set of 8.

    • Original 4-ring design
    • Pressure cast aluminum construction provides great strength and durability
    • Precision cam ground
    • Modern steel wrist pins
    • Snap ring style retainer clips
  • Speedway Plasma Moly Piston Rings, 4.00 Bore, Style D
    Speedway Plasma Moly Piston Rings, 4.00 Bore, Style D
    SKU-91510471
    x
                

    Speedway premium Plasma Moly piston rings work with either gas or alcohol fuels, handle 8000+ rpm, and up to 14:1 compression.

    Ring Style Chart (GIF)

  • ARP Fasteners 234-4601 Small Block Chevy Undercut Head Studs
    ARP Fasteners 234-4601 Small Block Chevy Undercut Head Studs
    SKU-1012344601
    x
                Install an ARP Small Block Chevy (SBC) head stud kit to enhance cylinder head sealing, ensure consistent torque values and help prevent damage to threads in the block. 

    All kits come with aerospace-quality nuts and parallel-ground, hardened washers.  Kits include undercut short studs that all but eliminate head gasket failure. Undercut studs have a narrowed area on the center of the stud shank. These undercuts add more tensile strength to the stud. 190,000 PSI.

    Not for raised runner heads.


  • 1955-1959 Ford 292 Y Block, 1949-1953 Oldsmobile 303 Piston Rings
    1955-1959 Ford 292 Y Block, 1949-1953 Oldsmobile 303 Piston Rings
    SKU-910568
    x
                3.75" bore piston ring set for 1955-1959 Ford 292 Y-Block and 1949-1953 Oldsmobile 303 Rocket. Specify .030", .040" or .060" oversize.
            
  • 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.

  • MAHLE Small Block Chevy 350 Powerpak Pistons, Dome, 6 Inch Rod
    MAHLE Small Block Chevy 350 Powerpak Pistons, Dome, 6 Inch Rod
    SKU-50325011
    x
                

    The Mahle PowerPak pistons are a race proven lightweight forged design that are complete with rings, wrist pins and locks. They are also completely phosphate coated plus feature an anti-friction Grafal skirt coating. PowerPak pistons are made from 4032 aluminum alloy to allow for tighter cylinder to wall clearances, and improved temperature stability.

    1.5mm, 1.5mm, 3.0mm file fit performance ring set is included. For 350 c.i. S/B Chevy (4.000" bore x 3.48" stroke).

    • Comp Height 6.0" Rod:  1.250
    • Pin Diameter:  0.927
    • Clearance Guide
      • *Meas. = 0.500
      • Min = 0.0025
      • Max = 0.0033

    *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. For all Mahle 350 pistons except 4V Flat 503-55004 for which Meas. = 0.465

    PowerPak Piston Chart Application (GIF)

  • 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
    SKU-9153065
    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.

     


  • Premium Small Block Chevy Rotating Assembly, 383 Flat Top, 6 Inch Rods
    Premium Small Block Chevy Rotating Assembly, 383 Flat Top, 6 Inch Rods
    SKU-91510260
    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.

  • Flathead Ford H-Beam Connecting Rods
    Flathead Ford H-Beam Connecting Rods
    SKU-9157000
    x
                

    If you have ever looked at a stock Flathead Ford connecting rod, you would wonder how those skinny things ever survive. So, if you have found a good block and are going to add a longer arm and a bigger thump stick, you had better upgrade to a set of H-beam rods. They are the stock length of 7.00" and accept 49-53 rod bearings. With the added material on the big end, they require a 3.25" or larger finished bore. 

    Set of 8.  

  • SB 350 Chevy Rotating Assem., One Piece, Flat Top-4 Valve, 5.7 Rod
    SB 350 Chevy Rotating Assem., One Piece, Flat Top-4 Valve, 5.7 Rod
    SKU-9151036
    x
                

    Speedway introduces forged rotating assembly engine rebuild kits, 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.

    New one piece rear main cast steel crank. Standard size journals. Hyperuetectic piston set and Speedway Super Stock rods. ARP rod bolts.

    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.
  • KB Chevy 350 Hypereutectic Pistons, Dish, 5.7 Rod
    KB Chevy 350 Hypereutectic Pistons, Dish, 5.7 Rod
    SKU-474193
    x
                

    Keith Black Hyperutectic pistons are favored for their improved power and reduced scuffing. The unique design & manufacturing processes combine to produce a rigid piston, which will rock less in the bore improving ring seal. These T-5 heat treated pistons also offer reduced thermal expansion, which allows you to run tighter clearances and allows the piston rings to seal better and minimize blow-by.

    For S/B Chevy 350 c.i. (4.000" bore x 3.48" stroke).

    • 390 Hypereutectic alloy
    • Fully machined crowns and valve reliefs
    • Drilled oil drain backs
    • Full floating wrist pins
    • Triple wound spiral locks
    • Reflective alloy allows 2% power increase
    • Quench dome technology minimizes deterioration
    • Zero deck quench designs
    • Lightweight wrist pins

    Ring Style Chart (GIF)

    474-193 Instructions (PDF)

  • Scat 4-400-4000-6000 434 Chevy 4340 Forged Crankshaft, 4.00 Stroke
    Scat 4-400-4000-6000 434 Chevy 4340 Forged Crankshaft, 4.00 Stroke
    SKU-91515575
    x
                

    As you make more and more power it becomes more important to use quality parts. These Scat 4340 forged steel cranks will help keep your motor alive.

    • Straight shot & chamfered oil holes
    • Nitride hardened for superior wear reisistance
    • Lightening holes in all rod throws
    • Large radius on all journals
    • Heat treated, shot peened
    • Designed at SCAT
    • Engineered at SCAT
    • Inspected & micropolished at SCAT
    • For 2-piece rear main blocks
    • 2.100" rod pin
    • 55 lbs.
  • SB Chevy Rotating Assembly, 350 Flat Top-4 Valve Relief, 5.7 Rod
    SB Chevy Rotating Assembly, 350 Flat Top-4 Valve Relief, 5.7 Rod
    SKU-91510206
    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
  • Scat 25700716 Small Block Chevy 4340 I-Beam Rods, 5.7 Inch, Bushed Pin
    Scat 25700716 Small Block Chevy 4340 I-Beam Rods, 5.7 Inch, Bushed Pin
    SKU-91015230
    x
                

    These Scat Pro Comp 4340 forged bushed I-beam connecting rods come with huge 7/16" ARP cap screw bolts, which greatly increase strength and horsepower capabilities. In fact, Pro Comp series rods include some strength adders found in H-beam designs:

    • One-rib cap design for added strength and bearing support
    • Polished beams to eliminate stress risers
    • Special hollow dowels
    • Profile clearanced for stroker applications
  • Callies SA0213CS Compstar 4340 Crankshaft, 427 S/B Chevy, 6.0 Rod
    Callies SA0213CS Compstar 4340 Crankshaft, 427 S/B Chevy, 6.0 Rod
    SKU-2498113
    x
                Callie's solid modeling abilities provide a great  advantage in product  development. They’re able to precisely locate  material where it will  yield the greatest advantage in terms of both  strength to weight, and  balance ability.

    Beginning with properly placed counterweights that not only improve balance but reduce bearing loads, every aspect of these highly stressed components has been analyzed. The forgings are rough machined 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!
  • KB Chevy 350 Hypereutectic Pistons, .150 Dome, 6.0 Rod
    KB Chevy 350 Hypereutectic Pistons, .150 Dome, 6.0 Rod
    SKU-474113
    x
                

    Keith Black Hyperutectic pistons are favored for their improved power and reduced scuffing. The unique design & manufacturing processes combine to produce a rigid piston, which will rock less in the bore improving ring seal. These T-5 heat treated pistons also offer reduced thermal expansion, which allows you to run tighter clearances and allows the piston rings to seal better and minimize blow-by.

    • 390 Hypereutectic alloy
    • Fully machined crowns and valve reliefs
    • Drilled oil drain backs
    • Full floating wrist pins
    • Triple wound spiral locks
    • Reflective alloy allows 2% power increase
    • Quench dome technology minimizes deterioration
    • Zero deck quench designs
    • Lightweight wrist pins

    For S/B Chevy 350 c.i. (4.000" bore x 3.48" stroke).

    Ring Style Chart (GIF)

    474-113 Instructions (PDF)

  • KB Claimer Chevy 383 Hypereutectic Pistons, Flat Top, 6.0 Rod
    KB Claimer Chevy 383 Hypereutectic Pistons, Flat Top, 6.0 Rod
    SKU-4749909
    x
                

    These Keith Black Claimer Pistons (also known as economy pistons) feature coated skirts, wrist pin lockrings and T-5 hypereutectic construction. Can be used with either press fit or floating wrist pins (lockrings included).

    Set of 8 for Chevy 383 c.i. (4.000" bore x 3.75" stroke). Does not include piston ring set. Use Ring Style C.

    KB Claimer Piston Chart (GIF)

    Ring Style Chart (GIF)

  • Scat 9-10442 Chevy 350 Crankshaft, Cast Steel
    Scat 9-10442 Chevy 350 Crankshaft, Cast Steel
    SKU-915104420
    x
                

    Scat's hi-tech, fatigue resistant 80-60-06 cast steel cranks have near forged steel endurance at a value price! Designed to replace stock cranks that have seen better days. Perfect for stock or mildly built engines.

    • For 2-piece rear main blocks
    • Precision ground and micro polished
    • Internally Balance
    • IMCA southern sport mod legal (Drilled only on the first rod throw)
    • Angle oil shot holes 
  • MAHLE Small Block Chevy 400 Dome Powerpak Pistons, 5.7 Inch Rods
    MAHLE Small Block Chevy 400 Dome Powerpak Pistons, 5.7 Inch Rods
    SKU-50342514
    x
                

    The Mahle PowerPak pistons are a race proven lightweight forged design that are complete with rings, wrist pins and locks.  They are also completely phosphate coated plus feature an anti-friction Grafal skirt coating.  PowerPak pistons are made from 4032 aluminum alloy to allow for tighter cylinder to wall clearances, and improved temperature stability.

    1.5mm, 1.5mm, 3.0mm file fit performance ring set is included. For 400 c.i. S/B Chevy (4.125" bore x 3.75" stroke).

    • Comp Height 5.7" Rod:  1.425
    • Pin Diameter:  0.927
    • Clearance Guide
      • *Meas. = 0.500
      • Min = 0.0025
      • Max = 0.0033

    *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.

    PowerPak Piston Chart (GIF)

  • World Products 053030 Small Block Ford Windsor Jr Cylinder Head, Bare
    World Products 053030 Small Block Ford Windsor Jr Cylinder Head, Bare
    SKU-8245303
    x
                When it comes to high performance replacements for  factory cast iron heads, World’s WINDSOR JR. has the market covered with  180cc intake runners, plus the 64cc exhausts ports are substantially  larger than OEM Ford heads. Add a highly efficient combustion chamber  design and larger valves and you have big bolt-on power. This head is a 50-State emissions legal factory replacement.The WINDSOR series  of heads are the cost-effective choice for serious power from your 302!

    • Head is sold individually
    • Material: High density cast iron
    • Valve Seats: Intake (integral), exhaust (hardened)
    • Valve Guides: Integral cast iron
    • Spring Seats: Machined for 1.560" and 1.250"
    • Intake Runner: 180cc, standard port location
    • Exhaust Ports: 64cc, standard location (dual exhaust bolt pattern to accommodate large custom headers)
    • Combustion Chamber: 58cc
    • Spark Plug: 14mm 5/8" .460" reach tapered style, Accel 276 or 276S or equivalent
    • Valve Job: Multi-angle intake and radiused exhaust
    • Valve Cover Rail: Raised
    • Valve Angle: Stock 20°
    • Accessory Bolt Holes: Stock
  • Flo-Tek 408-500 Big Block Chevy Aluminum Cylinder Head, 360cc, Bare
    Flo-Tek 408-500 Big Block Chevy Aluminum Cylinder Head, 360cc, Bare
    SKU-72250360
    x
                
    • Head is sold individually
    • 2.250” intake valve, 1.880” exhaust
    • 360cc intake runners 
    • 128cc exhaust runners
    • 121cc chambers
    • PC seals
    • High temp exhaust seats
    • Manganese bronze intake guides
    • Phosphor bronze exhaust guides
    • Multi angle valve job
    • Angle plugs
    • Sold individually
  • Icon Chevy 350 Forged Pistons, .163 Dome, 5.7 Rod
    Icon Chevy 350 Forged Pistons, .163 Dome, 5.7 Rod
    SKU-474727
    x
                

    Formerly KB Forged Pistons. Starting with 2618 alloy heat treated to high strength T-6 specifications, these give you the best value for your money. Exclusive V-rib adds strength without adding weight but allows maximum cooling. 

    For Chevy 350 c.i. (4.000" bore x 3.48" stroke). Use Style C rings (1/16", 1/16", 3/16").

    • High ductility 2618 alloy
    • Dual forced pin oiling on most applications
    • Lateral gas porting on higher compression ratios
    • Fully machined with deep valve pockets
    • Second land accumulator grooves
    • Top land mini groove technology
    • Diamond finished skirts
    • Triple wound spiral locks

    Ring Style Chart (GIF)

    474-727 Instructions (PDF)

  • KB Claimer Chevy 350 Hypereutectic Pistons, .150 Dome, 5.7 Rod
    KB Claimer Chevy 350 Hypereutectic Pistons, .150 Dome, 5.7 Rod
    SKU-4749904
    x
                

    These Keith Black economy (also known as economy pistons) feature coated skirts, wrist pin lockrings and T-5 hypereutectic construction. Can be used with either press fit or floating wrist pins (lockrings included).

    Set of 8 for Chevy 350 c.i. (4.000" bore x 3.48" stroke). Does not include piston ring set. Use 5/64", 5/64", 3/16" piston rings (Ring Style A).

    KB Claimer Piston Chart (GIF)

    Ring Style Chart (GIF)

  • SB 350 Chevy Rotating Assem., One Piece, Flat Top-2 Valve, 5.7 Rod
    SB 350 Chevy Rotating Assem., One Piece, Flat Top-2 Valve, 5.7 Rod
    SKU-9151037
    x
                

    Speedway introduces forged rotating assembly engine rebuild kits, 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.

    New one piece rear main cast steel crank. Standard size journals. Hyperuetectic piston set and Speedway Super Stock rods. ARP rod bolts.

    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.
  • 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. 


  • 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
    SKU-9151255
    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.

  • Scat 4-350-4000-6000 Chevy 4340 Forged Crankshaft-4 Stroke, 350 Main
    Scat 4-350-4000-6000 Chevy 4340 Forged Crankshaft-4 Stroke, 350 Main
    SKU-91515525
    x
                

    As you make more and more power it becomes more important to use quality parts. These Scat 4340 forged steel cranks will help keep your motor alive.

    • Straight shot & chamfered oil holes
    • Nitride hardened for superior wear reisistance
    • Lightening holes in all rod throws
    • Large radius on all journals
    • Heat treated, shot peened
    • Designed at SCAT
    • Engineered at SCAT
    • Inspected & micropolished at SCAT
    • For 2-piece rear main blocks
    • 2.100" rod pin
    • 408 & 434 Chevy Crankshaft
    • 54 lbs.
  • Premium SB Chevy Rotating Assembly, 383 Flat Top, 5.7 In Rods
    Premium SB Chevy Rotating Assembly, 383 Flat Top, 5.7 In Rods
    SKU-91510250
    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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