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Proform 66914 Self-Aligning Aluminum Roller Rocker Arms, 1.5 Ratio for Chevy Small Block Engines w/Centerbolt Heads [3/8 in. Stud]

778-66914


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66914 Self-Aligning Aluminum Roller Rocker Arms, 1.5 Ratio for Chevy Small Block Engines  w/Centerbolt Heads [3/8 in. Stud]
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$216.99
3 left in stock
Self-Aligning Aluminum Roller Rocker Arms
  • Chevy Small Block Engines (Gen 2)
  • Fits Centerbolt Cylinder Heads
  • 1.5 Ratio
  • 3/8 in. Stud
  • Full Roller
  • Narrow Body
  • Extruded Aluminum
  • Blue Anodized
  • Set of 16
  • Free Shipping - Ships
    QTY

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    66914 is rated 5.0 out of 5 by 8.
    Rated 5 out of 5 by from Good option on a budget. Product looks good and seems to be of good quality. I have no complaints so far. I would recommend this product for guys like me, on a budget.
    Date published: 2023-07-05
    Rated 5 out of 5 by from Awesome set of Rockers! I bought these about a month ago I have been running them for at least 2 weeks and am completely satisfied with my purchase! These are a very nice upgrade over the stock stamped steel ones and these solved alot of my valvetrain noise I was hearing so A+++. Just a reminder if you do go with thes make sure the roller ia contacting the stem of the valve and not on the keepers of the valve! I had to clearance my set but they still work flawlessly! Very happy with these roller rockers from proform and I would definitely buy them again if I need another set!
    Date published: 2021-03-16
    Rated 5 out of 5 by from Easy to install, adjust, and easy to adapt I have a 383CID with torque heads and finding Roller Rockers who are truly self align is hard. This do just what they say, self-align!
    Date published: 2014-12-28
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    Will these rockers work on vortec heads

    Asked by: Hot rod
    The Proform 778-66914 rocker set will work with Vortec heads.
    Answered by: jshook
    Date published: 2024-10-16

    Will these fit Edelbrock e street 5073 heads

    Asked by: Mike
    The Proform 778-66914 rockers will fit Edelbrock 5073 cylinder heads.
    Answered by: jshook
    Date published: 2024-03-07

    Will these work with a flat tappet cam

    Asked by: Tommyb
    The Proform 778-66914 rocker will work with a flat tappet cam.
    Answered by: jshook
    Date published: 2024-02-21

    Will they work with a 584 lift cam?

    Asked by: Aman
    The Proform 778-66914 rockers will fit a .584 lift cam.
    Answered by: jshook
    Date published: 2024-02-27

    Will the Polly lock nuts that are included work with stud girdles or will I need longer ones?

    Asked by: Easy
    The poly locks in the Proform 778-66914 rocker set does not work with stud girdles.
    Answered by: jshook
    Date published: 2024-01-16

    Running a Summit .450 lift cam on summit stock vortec heads if I upgrade to these will it be too much lift on those heads not sure of how much lift i can get away with running these heads

    Asked by: Jr LeBlanc
    The Proform 778-66914 rocker set will work with a .450 lift cam.
    Answered by: jshook
    Date published: 2023-09-20

    Will these work with stock lower profile valve covers or will taller valve covers be needed?m

    Asked by: Phantom Mariner
    You will need to use a taller valve cover with these roller rocker arms.
    Answered by: Rusty B
    Date published: 2024-06-09

    Will these work on stock LT1 heads?

    Asked by: KD209
    Yes, these should fit your LT1 engine.
    Answered by: Rusty B
    Date published: 2018-06-14
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