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Message: <blockquote data-quote="BigBore96" data-source="post: 1080146" data-attributes="member: 17566">This thread is old as shit.  But... there is some new BAD information.   1.A 5.4 2v will make basically the SAME power as a 4.6 2v.   Same if you had it with a 5.4 4v.   They do make more torque but not power.2. By going to a 4v from a 2v while keeping a stockish bore.  You DO NOT eliminate valve shrouding.  It's still there and holding back power.  The only way to correct is is doing a Big bore.   3.   Here is how on similiar setups power will go.    Meaning it's a rule of thumb and iit works the same with either 2v/4v/etc 4.6 < 5.4 (Barely) < 4.6 Stroker < 4.6 big bore < 4.6 stroker big bore < 5.4 stroker big bore.  Basically.  Switching to a 5.4 is not worth the hassle that you go through for a tad bit more torque.</blockquote>