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Merc heads on an 8BA

Discussion in 'The Hokey Ass Message Board' started by Frankenshovel, Jul 16, 2007.

  1. Frankenshovel
    Joined: Jun 3, 2004
    Posts: 74

    Frankenshovel
    Member

    Is there an advantage to this? The 8BA is a 49 truck flattie and yes it is a 24 bolt. Thanks.
     
  2. moefuzz
    Joined: Jul 16, 2005
    Posts: 4,951

    moefuzz
    Member

  3. blown49
    Joined: Jul 25, 2004
    Posts: 2,212

    blown49
    Member Emeritus

    List of different heads compression ratios:

    [​IMG]
     
  4. flathead4d
    Joined: Oct 24, 2005
    Posts: 898

    flathead4d
    Member

    I don't think you will notice any difference and do a lot of work for nothing. Most flatties don't show improvements without cam, carb and head upgrades. Then there's bore and stroke. If it's stock just drive it.
     
  5. Frankenshovel
    Joined: Jun 3, 2004
    Posts: 74

    Frankenshovel
    Member

    Thanks guys. Prolly saved me from doing alot of unecessary work.
     
  6. converseandbowlingshirts
    Joined: Nov 10, 2006
    Posts: 556

    converseandbowlingshirts
    Member
    from Eugene, OR

    The cheapest way to improve to a stock flatty is to flush the daylights out of it to get all of the casting sand out if it's not been done already. You'd be surprised how much sand is left in them.
     
  7. Flat Ernie
    Joined: Jun 5, 2002
    Posts: 8,406

    Flat Ernie
    Tech Editor

    Mercury heads are the lowest compression - EAB heads are the highest stock compression.

    Don't do it unless you're about to slap a blower on...and even then...
     

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