'04 4.2 swap questions - Mustang Evolution

Go Back   Mustang Evolution > 4 Cylinder | V6 | Classic Mustangs || Tech and Talk > Pre-2005 V6 Mustang

Join Mustang Evolution Today


Reply
 
Thread Tools Search this Thread
Please support our sponsors and let them know you heard about them here!
Old 06-15-2014, 12:14 AM   #1
Registered User
Newbie
 
Join Date: Jun 2014
Location: Hamilton
Region: Canada
Posts: 8
'04 4.2 swap questions

i currently own a '04 v6 5spd and the original 3.8 is blown. i'm wondering what year 4.2 would be the best for a replacement. hopefully someone can shed some light on this for me.
Dechstang is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 06-15-2014, 01:54 PM   #2
Registered Member
Regular
 
samuelsmith's Avatar
 
Join Date: Feb 2013
Location: Gulfport
Region: Mississippi
Posts: 1,234
97-08


Pre 2005 V6: How to: 4.2L V6 Mustang Engine Swap
__________________

new engine,1.7 rocker arms,Pipes exhaust, shorty cats , shorty headers,under drive and overdrive pulleys,4.2 upper plenum, throttle body spacer, cold air intake, stage one clutch, shorty shifter, and tune. 8.8 in storage
samuelsmith is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 06-15-2014, 02:31 PM   #3
Registered User
Newbie
 
Join Date: Jun 2014
Location: Hamilton
Region: Canada
Posts: 8
so if i pick up a '99 4.2 long block i should be able to swap my oil pan, accessoires and lower and upper intake from my 3.8 directly onto the 4.2, reconnect and hook up everything and call it a day?
Dechstang is offline   Reply With Quote
Old 06-15-2014, 07:39 PM   #4
Registered Member
Regular
 
lemons95's Avatar
 
Join Date: Jan 2012
Region: California
Posts: 835
You will need a new harmonic balancer and flywheel/flexplate.
Atleast I needed those, You may not need it if you have a 99-04 mustang.
Mine was a 1995 though and I know I needed those.
lemons95 is offline   Reply With Quote
Old 06-15-2014, 07:52 PM   #5
Registered User
Newbie
 
Join Date: Jun 2014
Location: Hamilton
Region: Canada
Posts: 8
ya i have a '04 mustang 5spd so im hoping i wont need that stuff but just would be great if someone knows for sure. i know the older sn95's needed more for the swap.
Dechstang is offline   Reply With Quote
Old 06-15-2014, 09:38 PM   #6
Registered Member
Regular
 
samuelsmith's Avatar
 
Join Date: Feb 2013
Location: Gulfport
Region: Mississippi
Posts: 1,234
Yea, including the lower intake on 99+ F-150 4.2. The 04 3.8 harmonic balancer and fly wheel are fine. Someone told me the 4.2 would need a tune, but Lemons did a single port 4.2 and his ran without a tune.
__________________

new engine,1.7 rocker arms,Pipes exhaust, shorty cats , shorty headers,under drive and overdrive pulleys,4.2 upper plenum, throttle body spacer, cold air intake, stage one clutch, shorty shifter, and tune. 8.8 in storage
samuelsmith is offline   Reply With Quote
Old 06-15-2014, 09:57 PM   #7
Registered Member
Regular
 
Join Date: May 2014
Location: Miami
Region: Florida
Posts: 112
Is there a guide with pics? I really want to see the process
__________________
"Joey" 2004 v6: SR CAI, MPT Tuned, 4.10 gears
Miri is offline   Reply With Quote
Old 06-16-2014, 03:09 AM   #8
Registered Member
Regular
 
lemons95's Avatar
 
Join Date: Jan 2012
Region: California
Posts: 835
You will get a check engine light without a tune, saying it's running lean. I have 10,000+ miles on this engine though. Only problem I've had with it is I don't think I got the rear main seal to seal all the way. It drops a little bit of oil. I check it every week though. It's not noticeable on the dipstick. I'm still in the safe range when I change my oil.

Sent from my LG-MS770 using Mustang Evolution mobile app
lemons95 is offline   Reply With Quote
Old 06-16-2014, 12:02 PM   #9
Registered Member
Regular
 
samuelsmith's Avatar
 
Join Date: Feb 2013
Location: Gulfport
Region: Mississippi
Posts: 1,234
I have not seen a write up with pics. in about 5 years. No one made it a sticky. You could make one and request the moderators to sticky it. Some one did a 06 4.2 swap about 6 months ago but did not do a tutorial. It's pretty easy so most people who know hot to do this do not want to stop, wash their hands, and take pics.


Many people ask about this project and 2% of the people who ask do it. You only gain 10 hp and 35 tq with the Windstar intake. The 3.8 intake blocks a lot of air and lowers your numbers.
__________________

new engine,1.7 rocker arms,Pipes exhaust, shorty cats , shorty headers,under drive and overdrive pulleys,4.2 upper plenum, throttle body spacer, cold air intake, stage one clutch, shorty shifter, and tune. 8.8 in storage
samuelsmith is offline   Reply With Quote
Old 06-16-2014, 01:23 PM   #10
Registered Member
Regular
 
lemons95's Avatar
 
Join Date: Jan 2012
Region: California
Posts: 835
The torque is really noticeable compared to a stock 3.8, a 1994-98 v6 is suppose to make a 145 HP at 4500rpm, and 215 torque 2500.
When I dynoed mine I got 210tq at 2000 rpms and 110hp at 4000rpms.
With just the 4.2, with my 94-98 heads. I was running mid-high 16's. With a 8.8 swap with 3.27's and a CAI I dropped down to mid 15's in the quarter mile.
There should/was a 4.2 sticky on this forum, it's what I used mostly.

Sent from my LG-MS770 using Mustang Evolution mobile app
lemons95 is offline   Reply With Quote
Old 06-16-2014, 07:01 PM   #11
Registered User
Newbie
 
Join Date: Jun 2014
Location: Hamilton
Region: Canada
Posts: 8
well the best thing for me to do then is to just pick up this long block, and swap all my stuff over onto it for now then proceed to have it tuned once up and running. so im thinking this '99 long block will work. will my mustang upper intake bolt to the f150 lower?
Dechstang is offline   Reply With Quote
Old 06-16-2014, 08:46 PM   #12
Registered Member
Regular
 
lemons95's Avatar
 
Join Date: Jan 2012
Region: California
Posts: 835
I don't see why you would need a f150 lower, unless they changed the heads.
I thought all the split port heads and intakes were the same, except for the windstars, their always different.
lemons95 is offline   Reply With Quote
Old 06-16-2014, 10:42 PM   #13
Registered User
Newbie
 
Join Date: Jun 2014
Location: Hamilton
Region: Canada
Posts: 8
ok thanks everyone i think ive got all my info straight forward on the 4.2 swap now. one last question for the guys with manual transmissions. can the engine be pulled without removing the t5?
Dechstang is offline   Reply With Quote
Old 06-17-2014, 11:08 AM   #14
Registered Member
Regular
 
samuelsmith's Avatar
 
Join Date: Feb 2013
Location: Gulfport
Region: Mississippi
Posts: 1,234
I thought the f-150 lower intake was like the Windstar intake. I went to Autozone.com and the gasket is the same as a Mustang.


I have seen a bunch of 98 f-150s and you do not have to take the upper intake off to remove the motor. Taking the trans. out with the motor would make it harder.


Remember to remove the motor mounts before stabbing the engine into the trans. when installing.
__________________

new engine,1.7 rocker arms,Pipes exhaust, shorty cats , shorty headers,under drive and overdrive pulleys,4.2 upper plenum, throttle body spacer, cold air intake, stage one clutch, shorty shifter, and tune. 8.8 in storage
samuelsmith is offline   Reply With Quote
Old 06-18-2014, 08:56 AM   #15
Staff
Regular
Staff
 
scottydsntknow's Avatar
 
Join Date: Apr 2013
Location: JB MDL
Region: New Jersey
Posts: 15,297
In my experience, pulling the the motor and trans out as one assembly is easier and its a much easier re-install too. Get a load leveler with your cherry picker, have the hood off and someone to help you guide out the whole shebang. Swapping the trans while the motor is hanging on the picker is child's play also compared to wrestling with it with the engine in the car.
__________________
2000 Mustang GT Steeda build #48. Bolt ons, suspension, Novi 2000.

Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.
scottydsntknow is offline   Reply With Quote
Old 06-21-2014, 10:12 PM   #16
Registered User
Newbie
 
Join Date: Jun 2014
Location: Hamilton
Region: Canada
Posts: 8
does anyone know the best way to get to the top bellhousing bolts on the 3.8 without pulling the t5 transmission from the car? do i need to pull the upper intake of or is there a way to get to it from the bottom?
Dechstang is offline   Reply With Quote
Old 06-22-2014, 03:36 AM   #17
Registered Member
Regular
 
lemons95's Avatar
 
Join Date: Jan 2012
Region: California
Posts: 835
Your going to need the intake off anyways. Why not do it now?

Sent from my LG-MS770 using Mustang Evolution mobile app
lemons95 is offline   Reply With Quote
Old 06-22-2014, 08:27 AM   #18
Staff
Regular
Staff
 
scottydsntknow's Avatar
 
Join Date: Apr 2013
Location: JB MDL
Region: New Jersey
Posts: 15,297
Why not just pull it all at once? It would probably have been out already since its all of 2 nuts on the crossmember and a few electrical plugs.

Sent from my VS980 4G using Mustang Evolution mobile app
__________________
2000 Mustang GT Steeda build #48. Bolt ons, suspension, Novi 2000.

Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.
scottydsntknow is offline   Reply With Quote
Old 06-22-2014, 07:07 PM   #19
Registered User
Newbie
 
Join Date: Jun 2014
Location: Hamilton
Region: Canada
Posts: 8
well, after lots of frustration its finally out. i pulled it all together, not really what i was aiming for but oh well, the 4.2 is being dropped off on friday, when i will start swapping everything over, i know i need a new oil pan, my question is would my oil pickup tube and screen still be good even tho the engine tossed a rod?
Dechstang is offline   Reply With Quote
Old 06-22-2014, 09:07 PM   #20
Registered Member
Regular
 
lemons95's Avatar
 
Join Date: Jan 2012
Region: California
Posts: 835
Clean them out as best as possible, might be some metal shavings in it.
Unless your oil pan is damaged I think you can use it.
I kept my oil pan.

---------- Post added at 09:07 PM ---------- Previous post was at 09:07 PM ----------

Clean them out as best as possible, might be some metal shavings in it.
Unless your oil pan is damaged I think you can use it.
I kept my oil pan.
lemons95 is offline   Reply With Quote
Old 06-23-2014, 01:20 PM   #21
Registered Member
Regular
 
samuelsmith's Avatar
 
Join Date: Feb 2013
Location: Gulfport
Region: Mississippi
Posts: 1,234
It depends on which piston broke and did it go through the oil pan? Break cleaner will get the metal shavings off the parts.
__________________

new engine,1.7 rocker arms,Pipes exhaust, shorty cats , shorty headers,under drive and overdrive pulleys,4.2 upper plenum, throttle body spacer, cold air intake, stage one clutch, shorty shifter, and tune. 8.8 in storage
samuelsmith is offline   Reply With Quote
Old 06-23-2014, 04:57 PM   #22
Registered User
Newbie
 
Join Date: Jun 2014
Location: Hamilton
Region: Canada
Posts: 8
ya oil pan is toast big hole in the drivers side of it.
Dechstang is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

Lower Navigation
Go Back   Mustang Evolution > 4 Cylinder | V6 | Classic Mustangs || Tech and Talk > Pre-2005 V6 Mustang

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
7.5 to 8.8 rearend swap questions... strawdog Pre-2005 V6 Mustang 6 06-18-2009 04:11 PM
swap questions ryanxup Pre-2005 V6 Mustang 10 01-27-2007 12:02 PM
I have a couple 5.0 swap questions colinsv6stang 1979-1995 Mustang GT 5 04-28-2006 01:18 PM
Gear and axle swap questions. DarkShadow Pre-2005 V6 Mustang 15 09-07-2005 03:18 AM
Yup, more v6 to 4.6 swap questions fast64 1996-2004 Mustang GT 10 06-19-2005 02:30 PM

» Like Us On Facebook



08:03 PM


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0

MustangEvolution.com is in no way associated with or endorsed by Ford Motor Company.