5.4 truck block

don't do it.


2v is just too little for 5.4.

there are a million arguments over this, but 4.6 or 5.0 2v's reach 410fwhp. 5.4 just can't breathe through a straw. 5 litres is really the limit for power. even then the power to litres ratio is dropping like a rock.

get 3v or best of all get a 4.6 4v with c series heads. 03-04 4v in mach,aviator,cobra,(maybe all lincoln?) have the best non-GT exhaust ports available.

Bill knows all about the 5.4s, i'd listen to him

yup yup listen to Bill

yeah, sell it on e-bay.

you will not get as much power. but there is a more important point in the 5.4 vs. 4.6 2v battle.

the 4.6 can rev to 7000. the 5.4 2v makes useful power below 6000. the gear required for 5.4 is no better than 3.90. a 4.6 gets to use 4.88 because of it's rev range. that's a hell of a lot of extra mechanical advantage troughout the powerband. these guys are balking at gearing it like it needs, but 4.56 to 4.88 is useless for 5.4 2v. if you stick to 4.6, you have the options of 3v and 4v WITH available power parts. headers just being one. i am finding that very few people want to exploit the power of 3v or 4v 5.4's because everything has to be made for them. an 03-04 mach1 can easily make 450rwhp. i have to admit that 450rwhp is going to be a challenge or may be impossible for 5.4 3v.