4.2-4.6 swap?
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From: Mechanicsville
4.2-4.6 swap?
ive got a 97 with the 4.2 with some miles on her....and noticed a 4.6 with the trans with less than 50k on it on c-list for 500 bucks....sounds pretty good but can it be done..basically will it fit...and what am i lookin to pay to install em?...
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From: Beaverton Or.
That's a good deal. I would jump on it. Not sure what install would be since it would be going from a 4.2 to 4.6 which involves a bit more work. If I were to guess, if you find a shop that has the knowledge to do so, for it to be around 1400-1600. Got the means to do it yourself? I would. You and a friend could do it in a few days time.
Last edited by Toyz; Feb 3, 2011 at 03:43 PM.
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From: Mechanicsville
yeah i would love to do it just dont have a clue....ive installed susp lifts and BL...but this is a whole different story....would a 5.4 work?...or is that just to much work
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From: Wilmington DE
There's a guy on here that put a Lightning motor and trans in his truck that had a V6 to start with.
Phil
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From: Wilmington DE
lol,,That's a tight fit. A 5.4 in a stang but guys are doing it.
He has plenty of room in that F-150 engine bay.
He has plenty of room in that F-150 engine bay.
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From: Mechanicsville
heres another ?.....my engine has been rebuilt but my trans has not....so when my trans goes could a replace it with a trans that would work for the 5.4 and then when my engine goes replace with a 5.4
why would you pay $500 and up to a weeks downtime for an engine that only get ~30 hp more than yours? 
if you had a dead 4.2L, i could see this as practical, but if it aint broke, why fix it?
if you had a dead 4.2L, i could see this as practical, but if it aint broke, why fix it?
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From: swamps of la
what is the difference with the 5.4 and 4.6 motors? arent they the same except the 5.4 has a longer stroke?
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From: Wilmington DE
the 5.4 is wider.
That's the mane reason you cant swap intake manifold between the two.
Phil
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From: Wilmington DE
I'm not sure if the 4.2 and 4.6 trannys are the same or even if they have the same bell-housing or not.
The 4.6 he was talking about had a tranny with it.
Now hes thinking about a 5.4...lol
The 4.6 he was talking about had a tranny with it.
Now hes thinking about a 5.4...lol