Engine help

Discussion in 'Classic Mustang Specific Tech' started by robert912005, Sep 22, 2009.


  1. robert912005

    robert912005 Member

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    I just got a 351 winsdor out of a 70's LTD... Are the rocker arms supposed to have studs or bolts?
  2. rbohm

    rbohm Founding Member

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    generally they use a stud mount rocker arm, though someone could have replaced the heads with ones that use bolt down rocker arms.
  3. woodsnake

    woodsnake Active Member

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    What are your plans for the engine?
  4. brianj5600

    brianj5600 Active Member

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    It depends an the year. Prior to 78 uses studs and rail rockers. 78+ uses bolt down rockers with pivot guided rockers. If they are 77 or newer the have 1.78" intake valves, 1.45" exhaust valves and big 69cc chambers. 69-76 uses 1.84 in and 1.54 ex valves with 61cc chanbers.

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