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Howards Cams Steel Billet Mechanical Roller Camshafts 121123-10 Camshaft, Tappet, Advertised Duration 301/309, Lift .703/.703, Chevy, Big Block, Each

SKU: HRS121123-10

Camshafts

Howards Cams Steel Billet Mechanical Roller Camshafts 121123-10 Camshaft, Tappet, Advertised Duration 301/309, Lift .703/.703, Chevy, Big Block, Each

SKU: HRS121123-10

Camshafts
A$1,058.33
IN STOCK! Est Ship 4-7 days. This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.
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Description

Howards Cams steel billet mechanical roller camshafts are serious cams for serious performance. Cut from billet steel these high-grade, race-quality mechanical roller cams from Howards are ground on precision equipment to ensure awesome performance. Mechanical roller cams offer aggressive power for all-out competition. They're billet, they're Howards, and they're serious-- mechanical roller camshafts!

Part Type

Solid Roller Cam - BBC Max Effort

Data: v4.2 - Upd: 2026-09-29 03:36:24

Specifications

Product Attributes - Brand
Howards Cams
Product Attributes - Manufacturer's Part Number
121123-10
Product Attributes - Part Type
Camshafts
Product Attributes - Product Line
Howards Cams Steel Billet Mechanical Roller Camshafts
Product Attributes - UPC
840793105908
Product Attributes - Cam Style
Solid roller, Retro-fit
Product Attributes - Camshaft Use
Drag race
Product Attributes - Camshaft Manufacturers Description
Competition use, good mid and upper horsepower bracket cars. OK with nitrous oxide.
Product Attributes - Basic Operating RPM Range
4,000-8,000
Product Attributes - Intake Duration at 050 inch Lift
269
Product Attributes - Exhaust Duration at 050 inch Lift
277
Product Attributes - Duration at 050 inch Lift
269 int./277 exh.
Product Attributes - Advertised Intake Duration
301
Product Attributes - Advertised Exhaust Duration
309
Product Attributes - Advertised Duration
301 int./309 exh.
Product Attributes - Intake Valve Lift with Factory Rocker Arm Ratio
0.703 in.
Product Attributes - Exhaust Valve Lift with Factory Rocker Arm Ratio
0.703 in.
Product Attributes - Valve Lift with Factory Rocker Arm Ratio
0.703 int./0.703 exh.
Product Attributes - Lobe Separation (degrees)
110
Product Attributes - Camshaft Gear Attachment
3-bolt
Product Attributes - Intake Valve Lash
0.022 in.
Product Attributes - Exhaust Valve Lash
0.022 in.
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 hrs121123-10
SFX Item ID 5098193
Supplier Item Code 5098193
Manufacturer SKU 121123-10
Manufacturer UPC 840793105908
Alternative References HRC121123-10

Compatibility

Application Data
  • Beginning Year1967
    Ending Year1969
    Engine FamilyChevy big block Mark IV
    Engine Size7.0L/427
    Engine TypeV8
    MakeCHEVROLET
  • Beginning Year1967
    Ending Year1970
    Engine FamilyChevy big block Mark IV
    Engine Size6.5L/396
    Engine TypeV8
    MakeCHEVROLET
  • Beginning Year1970
    Ending Year1972
    Engine FamilyChevy big block Mark IV
    Engine Size6.6L/402
    Engine TypeV8
    MakeCHEVROLET
  • Beginning Year1970
    Ending Year1990
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
    Engine TypeV8
    MakeCHEVROLET
  • Beginning Year1991
    Ending Year1995
    Engine FamilyChevy big block Gen V
    Engine Size7.4L/454
    Engine TypeV8
    MakeCHEVROLET

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