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2003 Lincoln Navigator ???’s

Discussion in 'Ford Modular Forum' started by yoteehunter, Dec 22, 2017.

  1. yoteehunter

    Joined:
    Apr 20, 2006
    Can anyone tell me if a 2003 Lincoln Navigator has a return or returnless fuel system? Also I was thinking because it’s dohc maybe put it on 6psi boost would that keep power around 400hp and safe on the stock engine or can it be pushed up to 8psi or so?
     
    yoteehunter, Dec 22, 2017
    #1

  2. TTF/Ken Staff Member

    Joined:
    Dec 31, 2011
    Its a returnless system. Rods won't hold up to more than about 400HP in a stock block, but the engine can be built to take a LOT more.
     
    TTF/Ken, Dec 22, 2017
    #2

  3. 91turboterror

    Joined:
    Mar 17, 2013
    Which engine is in your navigator? 2v or the 4v either is available. It would take a little less boost to get to your 400hp target with the intech 32v. Like Ken said the rods are the weak point
     
    91turboterror, Dec 24, 2017
    #3

  4. 91turboterror

    Joined:
    Mar 17, 2013
    Oops I read past the dohc part
     
    91turboterror, Dec 29, 2017
    #4
    Droptop Snake likes this.
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