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Product Summary

Chevy Small Block V8, Roller Rocker Arm Style

    Key Specs

    MFG. Part #57523512
    Rocker Arm StyleRoller
    Rocker Arm Ratio1.6
    Stud Size0.4375"
    Stud Diameter0.4375"

    Need To Know

    This Product Will Ship Free

    Quick and Easy Returns

    Details

    These S/B Chevy stainless steel roller rockers are built of 15-5PH material which gives you superior strength over other stainless rockers. They have more needle bearings which increases strength while reducing friction. Built to clear 1.55" valve springs.

    • Designed for higher open valve spring pressures
    • Strong 15-5PH stainless steel
    • Specially cast and machined for larger valve springs and retainers
    • Light weight with integral pushrod seat
    • Oversize trunions and full roller precision needle and cage bearings
    • More needle bearings for increased performance and rocker life
    • CNC machined pushrod cups and heat-treated Cr40 roller tips
    • Internal oiling system for long lasting performance
    • H.D. Polylocks included

    Application

    • 265 V8 1955-1957
    • 267 V8 1979-1982
    • 283 V8 1957-1967
    • 302 V8 1967-1968
    • 305 V8 1976-1986
    • 307 V8 1968-1973
    • 327 V8 1962-1969
    • 350 V8 1967-1986
    • 400 V8 1970-1980

    Specifications

    KEY SPECS
    MFG. Part #57523512
    BrandSpeedway Motors
    Rocker Arm StyleRoller
    Rocker Arm Ratio1.6
    Stud Size0.4375"
    Stud Diameter0.4375"
    GENERAL
    Rocker Arm Nut StylePolylock
    Material TypeStainless Steel
    Sold in QuantitySet
    Self-AligningNo