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Howards Cams Retrofit Hydraulic Roller Camshafts 720555-12 Camshaft, Retrofit, Tappet, Advertised Duration 282/288, Lift .525/.525, Chrysler, Big Block

SKU: HRS720555-12

Camshafts

Howards Cams Retrofit Hydraulic Roller Camshafts 720555-12 Camshaft, Retrofit, Tappet, Advertised Duration 282/288, Lift .525/.525, Chrysler, Big Block

SKU: HRS720555-12

Camshafts
A$1,080.79
Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.
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Description

Howards Cams retrofit hydraulic roller camshafts offer more lift and more power for less money. These street performance grinds are perfect for those wanting to upgrade to hydraulic roller cams. Manufactured using the highest grade race-quality cores, Howards precision-grinds their cams to provide the quality and performance that you want at a reasonable price. Overhaul your valvetrain for mild to wild street performance with Howards Cams retrofit hydraulic roller camshafts. Hundreds of models are available for a wide range of vehicles from the 1950s and up.

Part Type

BBM Hyd Roller Camshaft

Data: v4.2 - Upd: 2026-10-13 22:06:48

Specifications

Product Attributes - Brand
Howards Cams
Product Attributes - Manufacturer's Part Number
720555-12
Product Attributes - Part Type
Camshafts
Product Attributes - Product Line
Howards Cams Retrofit Hydraulic Roller Camshafts
Product Attributes - UPC
840793115389
Product Attributes - Cam Style
Hydraulic roller, Retro-fit
Product Attributes - Camshaft Use
Street/Strip
Product Attributes - Camshaft Manufacturers Description
Mild lopey idle, street/mild bracket, good low to midrange performance. 2,500+ stall.
Product Attributes - Basic Operating RPM Range
2,000-6,000
Product Attributes - Intake Duration at 050 inch Lift
228
Product Attributes - Exhaust Duration at 050 inch Lift
234
Product Attributes - Duration at 050 inch Lift
228 int./234 exh.
Product Attributes - Advertised Intake Duration
282
Product Attributes - Advertised Exhaust Duration
288
Product Attributes - Advertised Duration
282 int./288 exh.
Product Attributes - Intake Valve Lift with Factory Rocker Arm Ratio
0.525 in.
Product Attributes - Exhaust Valve Lift with Factory Rocker Arm Ratio
0.525 in.
Product Attributes - Valve Lift with Factory Rocker Arm Ratio
0.525 int./0.525 exh.
Product Attributes - Lobe Separation (degrees)
112
Product Attributes - Camshaft Gear Attachment
3-bolt
Product Attributes - Remanufactured
No
Product Attributes - Computer-Controlled Compatible
No
Product Attributes - Valve Springs Required
Yes
Product Attributes - Quantity
Sold individually.

Reference Information

Brand Name/s Howards Cams
StreetFX SKU hrs720555-12
SFX Item ID 5099352
Supplier Item Code 5099352
Manufacturer SKU 720555-12
Manufacturer UPC 840793115389
Alternative References HRC720555-12

Compatibility

Application Data
  • MakeCHRYSLER
    Beginning Year1959
    Ending Year1965
    Engine TypeV8
    Engine FamilyMopar big block RB
    Engine Size6.8L/413
  • MakeCHRYSLER
    Beginning Year1961
    Ending Year1964
    Engine TypeV8
    Engine FamilyMopar big block B
    Engine Size5.9L/361
  • MakeCHRYSLER
    Beginning Year1961
    Ending Year1971
    Engine TypeV8
    Engine FamilyMopar big block B
    Engine Size6.3L/383
  • MakeCHRYSLER
    Beginning Year1963
    Ending Year1963
    Engine TypeV8
    Engine FamilyMopar big block RB
    Engine Size7.0L/426
  • MakeCHRYSLER
    Beginning Year1966
    Ending Year1978
    Engine TypeV8
    Engine FamilyMopar big block RB
    Engine Size7.2L/440
  • MakeCHRYSLER
    Beginning Year1972
    Ending Year1978
    Engine TypeV8
    Engine FamilyMopar big block B
    Engine Size6.6L/400
  • MakeDODGE
    Beginning Year1958
    Ending Year1966
    Engine TypeV8
    Engine FamilyMopar big block B
    Engine Size5.9L/361
  • MakeDODGE
    Beginning Year1961
    Ending Year1963
    Engine TypeV8
    Engine FamilyMopar big block RB
    Engine Size6.8L/413
  • MakeDODGE
    Beginning Year1961
    Ending Year1971
    Engine TypeV8
    Engine FamilyMopar big block B
    Engine Size6.3L/383
  • MakeDODGE
    Beginning Year1963
    Ending Year1971
    Engine TypeV8
    Engine FamilyMopar big block RB
    Engine Size7.0L/426
  • MakeDODGE
    Beginning Year1965
    Ending Year1965
    Engine TypeV8
    Engine FamilyMopar big block RB
    Engine Size6.7L/413
  • MakeDODGE
    Beginning Year1966
    Ending Year1979
    Engine TypeV8
    Engine FamilyMopar big block RB
    Engine Size7.2L/440
  • MakeDODGE
    Beginning Year1971
    Ending Year1978
    Engine TypeV8
    Engine FamilyMopar big block B
    Engine Size6.6L/400
  • MakePLYMOUTH
    Beginning Year1958
    Ending Year1966
    Engine TypeV8
    Engine FamilyMopar big block B
    Engine Size5.9L/361
  • MakePLYMOUTH
    Beginning Year1961
    Ending Year1962
    Engine TypeV8
    Engine FamilyMopar big block RB
    Engine Size6.8L/413
  • MakePLYMOUTH
    Beginning Year1961
    Ending Year1971
    Engine TypeV8
    Engine FamilyMopar big block B
    Engine Size6.3L/383
  • MakePLYMOUTH
    Beginning Year1963
    Ending Year1966
    Engine TypeV8
    Engine FamilyMopar big block RB
    Engine Size7.0L/426
  • MakePLYMOUTH
    Beginning Year1966
    Ending Year1978
    Engine TypeV8
    Engine FamilyMopar big block RB
    Engine Size7.2L/440
  • MakePLYMOUTH
    Beginning Year1972
    Ending Year1978
    Engine TypeV8
    Engine FamilyMopar big block B
    Engine Size6.6L/400

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