Guest fordguy57 Posted July 30, 2002 Share Posted July 30, 2002 I can pick up a low mileage 97 Expedition 5.4 and auto trans for $1200, or just the motor with electronic control module alone for around $600. Believe then would need to use T45 instead (as 4.6 uses). But I know next to nothing about these modular motors. Anybody familiar with these things (particularly the 5.4) in typical stock form (not Lightning version..). What are the good, the bad, the undetermined...? Thanks, Mike H Quote Link to comment Share on other sites More sharing options...
blueovalz Posted July 30, 2002 Share Posted July 30, 2002 But to add to this, the 4.6 has a RL/Stroke ratio around 2.1 (or maybe more). I can see where this would be great for a rev'r motor, but it seems to beg for some stroke. I don't know, but I'll bet the external dimensions for the 5.4 will be the same as the 4.6, and the weight will probably be comparable too. Quote Link to comment Share on other sites More sharing options...
pparaska Posted July 30, 2002 Share Posted July 30, 2002 Isn't the 5.4 L even taller (more deck height) and wider than the 4.6? It seems this was covered before. Maybe BLKMGK knows? Quote Link to comment Share on other sites More sharing options...
blueovalz Posted July 30, 2002 Share Posted July 30, 2002 I know that either is too dang wide to fool with in my Z. I think with exhaust headers, it is nearly 10" wider than my 289 is. Quote Link to comment Share on other sites More sharing options...
Guest MarksM Posted July 31, 2002 Share Posted July 31, 2002 >>"Isn't the 5.4 L even taller (more deck height) and wider than the 4.6?" Yes, this is where it's extra displacement comes from. A 4.6 with the DOHC heads is a wee bit larger in dimensions than a Boss 429. A fantasy combo for me would be an 03 Cobra engine in a last generation RX-7. Of course there's no way in Hell it would fit in there. Quote Link to comment Share on other sites More sharing options...
randy 77zt Posted July 31, 2002 Share Posted July 31, 2002 5.4 is taller.but spark plugs are in the intake menifold and its C-O-P-coil on plug.engine has a rear sump and pan is flat in front.would run better with cams from a 4.6 bullit mustang engine.i work as a tech for a ford dealer. Quote Link to comment Share on other sites More sharing options...
mtcookson Posted July 31, 2002 Share Posted July 31, 2002 we have a 97 ford expedition with the 5.4. i personally really dislike that engine. it has really nice low end torque but for it's size and stuff it should be pulling a lot more power. i'm personally disapointed with this engine. although being in a much lighter car like the Z it should be pretty cool, if it could even fit, but i still wouldn't choose it. Quote Link to comment Share on other sites More sharing options...
Guest MarksM Posted July 31, 2002 Share Posted July 31, 2002 While the 5.4 makes decent power and does have a nice Torque curve the 4.6 is a better performance choice. The added displacement of the 5.4 comes from a longer stroke. The bore size and spacing is the same as a 4.6. For some good mod motor info, check out http://www.mtcforum.com Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted September 12, 2002 Share Posted September 12, 2002 The really nice part about having a 5.4 in your truck or Expedition is that you know a 460 or 514 will fit in the engine compartment. Quote Link to comment Share on other sites More sharing options...
jeromio Posted September 12, 2002 Share Posted September 12, 2002 But then where do you put the extra 50gal fuel tank?? Quote Link to comment Share on other sites More sharing options...
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