[Healeys] Gearbox / OD identification

[J. Scott Morris]

Hello Jim;  Perhaps this table from a Laycock paper will help.
  --Scott Morris, Simcoe, Ontario, Canada;  '60 MkI BN7, '62 MkII BT7
   
  Laycock de Normanville Overdrives  A-Type
            Unit
  Type
    Ratio
    Serial No.
    Model
    Year
    Hydraulic Pressure
  P.S.I.
    Notes
    R
  E
  F
      A
    SN 28
    1292
    Austin Healey 100-4
     
    420  440
     
    L
      A
    SN 28
    1447
    Austin Healey 100-6
     
    470  490
     
    L
      A
    SN 22
    3009
    Austin Healey 3000
     
    470  490
     
    L
      A
    SN 22
    3087
    Austin Healey 3000
     
    470  490
     
    L

   
   
  REF:
  L  Laycock Overdrive - Section 1: Working Principles, Maintenance and Fault Finding , Laycock Engineering Ltd, Undated
  
bluechip <bluechipracing at snet.net> wrote:
  I have a sideshift gearbox /overdrive assembly I am trying to identify. the gearbox number is 10771, the OD is 22/3009/005148. It has the long shifter with the two bends, so I think it might be from an early 3000 mkII. None of my reference books delineate the gearbox or OD numbers with respect to car model or year. Any help would be appreciated.    Jim Smith    East Hampton, CT

J. Scott Morris - Keep Smiling, Murphy Lives
       
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