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Ford Performance M-6564-A50

Roller Rocker Arm 1.70 Ratio

Ford Performance M-6564-A50

Part Number: 397-M-6564-A50

Roller Rocker Arm
  • 1.70 Ratio
  • Bolt-On
  • Valve Type: Inline
  • 16/pkg
    Fits Heads:
  • 302/351W (1978 and later with production heads)
  • GT-40 (Cast Iron & Aluminum)
  • $375.00
    Ships 10/24/16
    if Ordered Today
    Made In USA
    FREE Shipping
    Ford Performance M-6564-A50 Roller Rocker Arm 1.70 Ratio $375.00

    Ford Performance M-6564-A50 Details

    Small Block

    • Same as "Cobra" 5.0L Mustang.
    • These rocker arms have beefy trunnions for extra long life.
    • Die cast aluminum construction.
    • Bolt-on roller rocker arms will not clear the stamped rocker cover on standard 5.0L EFI engines. "Taller" valve covers, such as the production 5.0L EFI HO die-cast aluminum cover or Ford Racing chrome cover M-6582-D302, can be used if the baffle is modified in the RH cover. The M-6582-E302 polished aluminum valve cover will clear all rocker arms and stud girdles, but will not fit under the EFI manifold unless a 1" spacer M-9486-A53 is used between the upper and lower sections of the intake. M-6582-E302 will not fit 1994-95 Mustang or 1990-93 T-Bird.


    Stud Size
    Engine Make/Size
    Ford 302-351W
    Arm Finish
    Arm Material
    Maximum Spring Diameter (in.)
    Sold as a set of 16
    Rocker Arm Body Style
    Rocker Arm Mounting Style
    Rocker Arm Ratio
    Rocker Arm Style
    Full roller
    Shims Included
    Manufacturer's Part Number:

    Ford Racing Aluminum Roller Rocker Arms

    Ford offers these high performance roller rocker arms for your engine. Roller rockers are a great solution to reduce valve train noise, wear and friction. We all know that reducing friction can increase horsepower but it also allows us to improve the reliability of the engine and increase the longevity of the engines performance.

    Whether you are planning a purpose built race engine or a street cruiser Ford Racing aluminum roller rocker arms are the perfect upgrade for performance and reliability.

  • Available for Factory and Aftermarket Heads
  • Different Ratios and Hardware Sizes are Available
  • Stud and Bolt-On Styles are Available
  • May Not Clear Factory Valve Covers, Check For Clearance Issues

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