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  1. #1
    Member
    Join Date
    Nov 2018
    Location
    Sumter, SC
    Posts
    12

    Ox66 shaved heads

    I am putting my ox66 back together. I am wanting to get heads shaved. My question is how much to get them shaved and what can I expect performance wise with them shaved?

  2.  
  3. Member
    Join Date
    Sep 2010
    Location
    toronto
    Posts
    17
    #2
    .060" should put you at 135-140 psi cranking. 2-3 mph increase is common.

  4. Member
    Join Date
    Apr 2014
    Location
    Maryland Eastern Shore
    Posts
    101
    #3
    91 octane

  5. Member
    Join Date
    Nov 2018
    Location
    Sumter, SC
    Posts
    12
    #4
    What does 91 octane have to do with it

  6. Member
    Join Date
    Oct 2017
    Location
    Mobile, Alabama
    Posts
    1,688
    #5
    Quote Originally Posted by Sfrye View Post
    What does 91 octane have to do with it
    Higher compression could cause detonation with 85 or 87 octane. 91 or 93 would be better.

    Same reason certain car engines require premium fuel.

  7. Member
    Join Date
    Nov 2018
    Location
    Sumter, SC
    Posts
    12
    #6
    Thank you.

  8. Member
    Join Date
    Nov 2018
    Location
    Sumter, SC
    Posts
    12
    #7
    I got them cut today. I got .040 cut off them. Is there a thicker head gasket I need to use and if so where would I get it

  9. Member
    Join Date
    Sep 2010
    Location
    toronto
    Posts
    17
    #8
    A thicker gasket would negate having the heads milled. Why only .040"?

  10. Member
    Join Date
    Nov 2018
    Location
    Sumter, SC
    Posts
    12
    #9
    didnt want to overdue it.