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

Search

Canadian Leaf
Products

Shop Engines At Speedway Motors

If you're ready to start making some serious power — and we mean SERIOUS power, you've come to the right place. Whether you're looking for a turn key crate engine or you're looking to build from the ground up, we've got the parts you need. We carry everything from the oil pan to the valve covers and everything in between. So if you're in the market for a new set of heads or pistons, remember that no one gets you more power for your dollar than Speedway Motors.

"Cylinder Block Components, Harmonic Balancers" Page 1 of 1

  • Fluidampr Balancers 550203 8BA Ford Flathead Damper, Wide Belt
    Fluidampr Balancers 550203 8BA Ford Flathead Damper, Wide Belt
    SKU-755550203
    x
                

    The high-tech Fluidampr uses silicone fluid to control the torsional harmonic vibrations created by your Flathead Ford V8. This is far superior to original-style dampers and will help eliminate crankshaft breaks, reduce wear on main bearings and increase horsepower.

    This damper is for 1949 Ford 8BA Flatheads with single 5/8" "wide" accessory belts. It has two pulley grooves.

    • Proven viscous fluid dampening
    • Reduces crankshaft breaks and bearing wear
    • Great looking chrome finish
    • Made in the USA
  • Chevy 383-400 Lightweight Balancer, 6-3/4 Inch
    Chevy 383-400 Lightweight Balancer, 6-3/4 Inch
    SKU-91015364
    x
                

    This 6-3/4" balancer fits 383/400 c.i. Small Block Chevys and only weighs 7-3/4 lbs. Plus, the balancing cut out is on the backside so they can't tell what crank you're running. Damper is a press-on fit.

    • Durable nodular iron construction
    • High temperature elastomer bond
    • This balancer is 1.20" thick
    • Rated to 6,500 RPM
    • NOT SFI approved 
  • 1981-95 Ford 302 Chrome Balancer, 50 Oz., 6.40 Inch O.D.
    1981-95 Ford 302 Chrome Balancer, 50 Oz., 6.40 Inch O.D.
    SKU-57530212
    x
                

    Chrome harmonic balancer for 1981-1995 Late Model Ford 5.0L/302/H.O. small block engines.

    • 50 oz. counter balance
    • 6.405" O.D.
    • Chrome finish
  • Professional Products 1949-53 Ford Flathead Crank Pulley-5/8 Inch Belt
    Professional Products 1949-53 Ford Flathead Crank Pulley-5/8 Inch Belt
    SKU-91015598
    x
                

    If you have ever built a flathead Ford you know the crank pulley is easy to bend and has no vibration dampening features. For use with 5/8" belt on balancer 910-15596.

  • Small Block Chevy 400 Harmonic Balancer, 8 Inch, Plain Steel
    Small Block Chevy 400 Harmonic Balancer, 8 Inch, Plain Steel
    SKU-91015400
    x
                

    Small block Chevy 400 c.i. V-8 stock-type replacement 8" harmonic balancers. External Balanced. Dampers are designed for press fit.

    • Ring and hub are bonded (vulcanized) to the elastomer
    • Surpasses the reliability and strength of OEM
    • NOT SFI-Approved
  • Professional Products 80010 Chevy 350 Lightweight Balancer, 6 Inch
    Professional Products 80010 Chevy 350 Lightweight Balancer, 6 Inch
    SKU-91015363
    x
                

    This 6" harmonic balancer fits 350 c.i. Small Block Chevys and only weighs 5.1 lbs. Plus, the balancing cut out is on the backside so they can't tell what crank you're running. Damper is a press-on fit.

    • For internally balanced engines
    • Durable nodular iron construction
    • High temperature elastomer bond
    • Engraved timing marks every 90° 
    • Includes 60° of easy-to-read timing marks 
    • Rated to 10,000 RPM
    • NOT SFI approved

    910-15363 Instructions (PDF) 

    Technical Notes (PDF) 

  • 1984-1993 Small Block Chevy 305-350 High Performance Damper
    1984-1993 Small Block Chevy 305-350 High Performance Damper
    SKU-91015371
    x
                

    High Performance Sportsman Dampers raise the bar in the high performance industry. The combination of top quality and reasonable pricing sets new standards.  This later model balancer has the timing mark moved compared to earlier engines.

    This Small Block Chevy damper is cast from nodular iron and suitable for engines generating up to 400 horsepower. Unlike most OEM dampers, the hub and ring are splined to prevent radial movement of the outer ring. Although this is not SFI Certified, this damper is 30% stronger than OEM dampers made from grey iron.

    • 6.75" OD
    • Black finish
    • Internal balance
    • Ideal for street rebuilds
    • Manufactured from nodular iron
    • CAD engineered and CNC machined
    • Perfect replacement for OEM applications
    • Suitable for high performance up to 6,000 RPM

     

  • Fluidampr Balancers 600203 8BA Ford Flathead Damper, Narrow Belt
    Fluidampr Balancers 600203 8BA Ford Flathead Damper, Narrow Belt
    SKU-755690201
    x
                

    The high-tech Fluidampr uses silicone fluid to control the torsional harmonic vibrations created by your Flathead Ford V8. This is far superior to original-style dampers and will help eliminate crankshaft breaks, reduce wear on main bearings and increase horsepower.

    This damper is for 1950 & later Ford 8BA Flatheads with the "narrow" 3/8" accessory belts. It has two pulley grooves.

    • Proven viscous fluid dampening
    • Reduces crankshaft breaks and bearing wear
    • Great looking chrome finish
    • Made in the USA
  • Small Block Chevy Harmonic Balancer, 6-3/4 Inch, Black
    Small Block Chevy Harmonic Balancer, 6-3/4 Inch, Black
    SKU-91015358
    x
                

    Small block Chevy stock-type replacement 6-3/4" diameter harmonic balancer. For internal balance engines.

    • NOT recommended for RPM's in excess of 6500
    • NOT SFI certified
    • Internal balance
  • Professional Products 81006 S/B Ford Balancer Pulley Spacer, 3/8 Inch
    Professional Products 81006 S/B Ford Balancer Pulley Spacer, 3/8 Inch
    SKU-91015366
    x
                

    This spacer must be used when replacing an original balancer that is 3-3/8" long which were typically found on '79 and earlier 351W engines.

    Harmonic Balancer Technical Notes (PDF)

  • Chevy 350 Harmonic Balancer, 8 Inch, Plain Steel
    Chevy 350 Harmonic Balancer, 8 Inch, Plain Steel
    SKU-91015357
    x
                

    Small block Chevy 350 c.i. V-8 stock-type replacement 8" harmonic balancers. Internal balanced. Dampers are designed for press fit.

    • Ring and hub are bonded (vulcanized) to the elastomer
    • Surpasses the reliability and strength of OEM
    • NOT SFI-Approved
  • Speedway Chrome SB Chevy 400 Fluid Crank Damper, 7-1/4 Inch
    Speedway Chrome SB Chevy 400 Fluid Crank Damper, 7-1/4 Inch
    SKU-91015329
    x
                

    Chrome plated steel balancer for S/B Chevy 383/400 c.i. V-8. Degreed from 10° ATDC to 50° BTDC. SFI serial number and timing marks are engraved on the outer ring.

    • Forged from 1025 low carbon steel  
    • Injected with high viscosity silicone fluid
    • External Balance 
    • Rated to 12,500 RPM
    • SFI 18.1 certified
    • 1.53" thickness excluding hub
  • Chevy 350 Harmonic Balancer, 8 Inch, Stainless Steel
    Chevy 350 Harmonic Balancer, 8 Inch, Stainless Steel
    SKU-91015348
    x
                

    Small block Chevy 350 c.i. V-8 stock-type replacement 8" harmonic balancers. Internal balanced. Dampers are designed for press fit.

    • Ring and hub are bonded (vulcanized) to the elastomer
    • Surpasses the reliability and strength of OEM
    • Stainless steel version features a show quality polish
    • NOT SFI-Approved
  • Fluidampr Balancers 620101 Small Block Chevy Crank Damper, 6.25 Inch
    Fluidampr Balancers 620101 Small Block Chevy Crank Damper, 6.25 Inch
    SKU-755712615
    x
                

    Eliminates crankshaft breaks, reduces wear on main bearings and increases horsepower. Fits 262-350 Small Block Chevy 1955-up (will not fit '92-up LT1). Internal balanced. 

    • 6-1/4" diameter
    • 7.9 lbs.
    • Steel housing
    • Black zinc chromate finsih
  • 1981-95 S/B Ford 302 4-Bolt Balancer, 50 Oz.
    1981-95 S/B Ford 302 4-Bolt Balancer, 50 Oz.
    SKU-91015334
    x
                

    This Small Block Ford balancer features billet steel forgings, a durable elastomer bond. The 50 oz. balance factor is common to 1981-95 302.

    Has a 4-bolt pulley hub.  Has a anodized black finish.

  • Professional Products 1949-53 Ford Flathead Crank Pulley-3/8 Inch Belt
    Professional Products 1949-53 Ford Flathead Crank Pulley-3/8 Inch Belt
    SKU-91015597
    x
                

    If you have ever built a flathead Ford you know the crank pulley is easy to bend and has no vibration dampening features. For use with narrow 3/8" belt on balancer 910-15596.

  • Garage Sale - PowerForce Dodge 5.7L Harmonic Balancer
    Garage Sale
    Garage Sale - PowerForce Dodge 5.7L Harmonic Balancer
    SKU-91080014.GS
    x
                

    This is garage sale priced because it has been discontinued. 

    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS   

     

    Mopar Dodge 5.7L small block V8 balancer. 

  • Small Block Chevy 400 Harmonic Balancer, 8 Inch, Stainless Steel
    Small Block Chevy 400 Harmonic Balancer, 8 Inch, Stainless Steel
    SKU-91015415
    x
                

    Small block Chevy 400 c.i. V-8 stock-type replacement 8" harmonic balancers. External Balanced. Dampers are designed for press fit.

    • Ring and hub are bonded (vulcanized) to the elastomer
    • Surpasses the reliability and strength of OEM 
    • Features a show quality polish and includes 60° of easy to read timing marks
    • NOT SFI-Approved
  • Professional Products 81007 S/B Ford Balancer Pulley Spacer, 1 Inch
    Professional Products 81007 S/B Ford Balancer Pulley Spacer, 1 Inch
    SKU-91015367
    x
                

    This spacer must be used when replacing an original balancer that is 4" long which were typically found on '80 and later 351W, '80 and earlier 302, and late model 5.0L engines with some triming of spacer required on 5.0L engines.

    Harmonic Balancer Technical Notes (PDF)

  • Professional Products 81008 S/B Ford Balancer Pulley Spacer, 7/8 Inch
    Professional Products 81008 S/B Ford Balancer Pulley Spacer, 7/8 Inch
    SKU-91015368
    x
                

    This spacer must be used when replacing an original balancer that is 3-7/8" long which were typically found on '80 and earlier 351W Ford racing HO engines or '80 and later 351W, 302, or 5.0L engines using the Ford Racing .917" crank sprocket.

    Harmonic Balancer Technical Notes (PDF)

  • EngineQuest BA289N Small Block Ford 3-Bolt Balancer, 28 oz.
    EngineQuest BA289N Small Block Ford 3-Bolt Balancer, 28 oz.
    SKU-91015359
    x
                This all new "early" style 28 oz. balancer works with 3-bolt pulleys. The 28 oz. balance factor is common to 1965-69 289, 1970-80 302, and 1970-96 351W.
            
  • Speedway Chrome SB Chevy 350 Fluid Crank Damper, 6.25 Inch
    Speedway Chrome SB Chevy 350 Fluid Crank Damper, 6.25 Inch
    SKU-91015330
    x
                

    Chrome plated steel balancer for S/B Chevy 350 c.i. V-8. Degreed from 10° ATDC to 50° BTDC. SFI serial number and timing marks are etched on the outer ring.

    • Forged from 1025 low carbon steel  
    • Injected with high viscosity silicone fluid
    • Rated to 12,500 RPM
    • SFI 18.1 certified