5.4 navi engine

[BJB5000]

Hey does anyone know what the redline on the navigator engine is. I am trying to put a mod 4v into my 93 GT and i am trying to get teh specs for all of these engines. Alsoo does it have forged internals, or not. Thank you for any help any of you can offer. Thanks guys.

 

[Bornstanger]

navi engines don't have forged internals except for the crank. and i believe they stopped using the forged crank in 01 for a cast version. as for the redline i'm not sure. although you probably could spin it to about 6500 to 7000 if you forge it.