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66907 Super-Street Aluminum Roller Rockers for Small Block Chevy, 1.5 Ratio, 3/8 in. Stud [Blue Anodized]
InfoVehicle Info Needed
PROFORMPART NUMBER: 778-66907

66907 Super-Street Aluminum Roller Rockers for Small Block Chevy, 1.5 Ratio, 3/8 in. Stud [Blue Anodized]

$18999
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Aluminum Roller Rocker Arms for 1955-1985 Small Block Chevy [1.5 Ratio, 3/8 in. Stud]

555-20980

Aluminum Roller Rocker Arms for 1955-1985 Small Block Chevy [1.5 Ratio, 3/8 in. Stud]

$33499

Chevy Small Block
Super-Street Aluminum Roller Rockers
  • Small Block Chevy
  • 1.5 Ratio
  • 3/8 in. Stud
  • Maximun Valve Spring Diameter: 1.400 in.
  • Blue Anodized Finish
  • Set of 16

    Proform 66907 Features:

    • Aluminum with Cage Bearing Trunions
    • Blue Anodized Finish with Laser-Etched "P" Emblem
    • Use with a Max Spring Diam. of 1.400 Inches
    • Rated for up to 450 lbs. of Open Load Pressure
    • Precision machined
    • Lengthen Valve Train Component Life
    • Reduce Wear On Valve Stem Tips
    Proform 66907 - FAQs

    FAQ:

    What is the difference between 1.5 and 1.6 roller rockers?

    • The Proform 66907 offers 1.5 ratio roller rockers, providing less valve lift than 1.6. 1.5 is ideal for street applications, while 1.6 is suitable for increased performance and racing.

    Are aluminum roller rockers good?

    • Yes, Proform aluminum roller rockers, like the 66907, are lightweight and durable. They reduce friction, enhance valvetrain stability, and are an excellent choice for improved engine performance.

    How do I know if my roller rockers are bad?

    • If you notice excessive noise, wear, or inconsistent valve movement, your roller rockers may be compromised. Regular inspection and maintenance, as recommended for Proform roller rockers, are essential.

      • Reduce Valvetrain Wear With Roller Rockers

      One of the best ways to rid an engine of internal friction is with a set of aluminum roller rocker arms. Proform's race-proven roller tips unleash horsepower, eliminate valve stem tip wear and tear, and extend valvetrain component life. These aluminum roller rockers are precisely machined to ensure ratio accuracy and consistency.

    Part TypeRocker Arm
    Product LineProform Aluminum Roller Rocker Arms
    BrandPROFORM
    Package Height1.9
    Package Width9.4
    Package Length14.4
    Weight6.0 PG
    Part CategoryPerformance Parts
    Arm FinishBlue anodized
    Rocker Arm Ratio1.5
    Includes ShimsNO
    Shims IncludedNo
    PositionN/A
    Maximum Spring Diameter1.4 in (35.56 mm)
    Stud Size 0.3750
    Nut StylePolylock
    Rocker Arm Nut StylePolylock
    QuantitySold as a set of 16
    Rocker Arm Mounting StyleStud
    Engine Make/SizeChevy Small Block (262-400)
    Self-AligningNo
    Rocker Arm StyleFull roller
    Rocker Arm Body StyleStandard
    Arm MaterialAluminum
    Ratio1.5
    Part FitmentSemi Universal
    Slot Width0.6 in (15.2 mm)
    Vendor Part Number66907
    Package Qty1
    Package TypeEA
    No Questions
    No Reviews

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