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Technical Another 394 olds question for the experts

Discussion in 'The Hokey Ass Message Board' started by borderboy1971, Feb 4, 2026 at 12:21 PM.

  1. Sorry to bug you guys again, but as I'd stated in my other post, I'm looking at buying a fresh rebuilt 59/60 394. It was rebuilt in the 90's and sat inside since. I've seen pictures of the engine and it looks great, and pictures of the rebuild specs from machine shop. It pretty much just a stock rebuild, with flat top pistons nd nothing exciting. What I'm wondering is if anyone can identify the pistons by their part number. ...709P-30. I've searched the web with out any luck. And I'm pretty sure the 30 is for the oversize. And does anyone think I should be concerned about anything with a 90's rebuild. Yes I'll be cleaning it up, with new ***embly lube if I buy it.
     
    leon bee likes this.
  2. Tim
    Joined: Mar 2, 2001
    Posts: 20,616

    Tim
    Member
    from KCMO

    @Paul to the front desk please.
     
  3. Paul
    Joined: Aug 29, 2002
    Posts: 17,014

    Paul
    Editor

    can't help ya with the part number/manufacturer
    if it was put together and stored right it should be good to go but if it were me I'd tear it down, clean, inspect and re***emble to be sure.
     
  4. Paul
    Joined: Aug 29, 2002
    Posts: 17,014

    Paul
    Editor

    if you are wanting to add more power, with your cam etc, you might consider having your number 23 heads gone through and use them on the '60 short block
     
  5. HEATHEN
    Joined: Nov 22, 2005
    Posts: 9,063

    HEATHEN
    Member
    from SIDNEY, NY

    708P sounds like a Federal Mogul/Sterling piston part number. Just a factory style replacement piston.
     

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