The official 4.2 swap post - Forums at Modded Mustangs
 
LinkBack Thread Tools
post #1 of 2 Old April 3rd, 2012, 12:59 AM Thread Starter
Raging Mad Motherfucker
 
The Cheeks McDuke's Avatar
 
Join Date: May 2011
Location: Bedford, IA
Posts: 1,050
   
iTrader: 0 reviews
The official 4.2 swap post

DISCLAIMER: In no way am I trying to take credit for writing this.These are the writings of PETE from V6Power. I am merely reposting for everyone's general fund of knowledge due to the many people asking. The original thread can be viewed here: The official 4.2 swap post - V6Power Messageboard


I can't remember there ever being a truly accurate 4.2 post so here goes...


Early 97-98 4.2s had a 2-pc main girdle that connected the 1st to the 2nd main cap and the 3rd to the 4th main cap and had larger main bolts. Mid-1998 and up 4.2s used a 1-pc girdle that only connected the rear 3 main caps and had smaller main bolts.

To use the early 4.2 in any Mustang will require replacing the girdle with a newer 3 main style from a 4.2, get a 99-up 3.8 girdle or just delete it. You will also have to cut the girdle studs sticking out of the head of the main bolts on the 1st main bearing. The 99-00 3.8s used a factory windage tray/girdle that is better than nothing but certainly not ideal. The 01-up 3.8s use the same windage tray/girdle as the 4.2.

Late 00 3.8s are actually early 01 spec engines that are internally balanced. If you have one of these.....just use the notes for an 01-up.


94-98 Single port heads

- 4.2 shortblock
- Single port heads/fuel rail/intake
- Mustang 3.8 water pump
- Auto trans = 4.2 or 01-up flexplate
- 5spd = 01-up or rebalanced 3.8 (0 or neutral) flywheel and a pilot bearing
- Re-use your stock cam position sensor
- 01-up 3.8 oil pan
- 01-up 3.8 oil pick-up tube and screen
- 4.2 damper or 01-up 3.8 damper (use the 01 pulley for blower cars)
- Re-use the stock 3.8 oil pressure sender and tube
- Re-use the Mustang headers
- You can use the 4.2 or 3.8 dipstick. Just keep track of where 5 qts puts the mark when refilling with oil.


94-98 Split port heads

*** You will need to perform all the mods required for a split port conversion plus these steps for the 4.2 (see pbmilan or V6sprout for the video) ***

- 4.2 shortblock or longblock
- You can use the 4.2 heads
- Mustang upper and lower intake
- Custom return style fuel rail (VMP has them)
- Mustang 3.8 water pump
- Auto trans = 4.2 or 01-up flexplate
- 5spd = 01-up or rebalanced 3.8 (0 or neutral) flywheel and a pilot bearing
- Re-use your stock cam position sensor
- 01-up 3.8 oil pan
- 01-up 3.8 oil pick-up tube and screen
- 4.2 damper or 01-up 3.8 damper (use the 01 pulley for blower cars)
- Re-use the stock 3.8 oil pressure sender and tube
- Re-use the Mustang headers
- You can use the 4.2 or 3.8 dipstick. Just keep track of where 5 qts puts the mark when refilling with oil.


99-00 split port heads

- 4.2 shortblock or longblock
- You can use the 4.2 heads
- Mustang upper and lower intake and fuel rail
- Mustang 3.8 water pump
- Auto trans = 4.2 or 01-up flexplate
- 5spd = 01-up or rebalanced 3.8 (0 or neutral) flywheel and a pilot bearing
- Re-use your stock cam position sensor
- 01-up 3.8 oil pan
- 01-up 3.8 oil pick-up tube and screen
- 4.2 damper or 01-up 3.8 damper (use the 01 pulley for blower cars)
- Re-use the stock 3.8 oil pressure sender and tube
- Re-use the Mustang headers
- You can use the 4.2 or 3.8 dipstick. Just keep track of where 5 qts puts the mark when refilling with oil.


01-up split port heads

- 4.2 shortblock or longblock
- You can use the 4.2 heads
- Mustang upper and lower intake and fuel rail
- Mustang 3.8 water pump
- Auto trans = your stock flexplate
- 5spd = your stock flywheel and a pilot bearing
- Re-use your stock cam position sensor
- Your 01-up 3.8 oil pan
- Your 01-up 3.8 oil pick-up tube and screen
- Your stcok 01-up 3.8 damper
- Re-use the stock 3.8 oil pressure sender and tube
- Re-use the Mustang headers
- You can use the 4.2 or 3.8 dipstick. Just keep track of where 5 qts puts the mark when refilling with oil.

If you cannot seem to spell simple 4 letter words, use some semblance of punctuation when forming sentences, or SpElL N tAlK LiEk ThIs, I'm going to assume you know nothing and are retarded.


The Sixxer is Dead. 94-95GT in the works.

Last edited by The Cheeks McDuke; November 2nd, 2012 at 01:59 PM.
The Cheeks McDuke is offline  
Sponsored Links
Advertisement
 
post #2 of 2 Old August 2nd, 2013, 08:56 PM
Regular
 
96-GT_Josh's Avatar
 
Join Date: Nov 2011
Location: Red Lion, PA
Posts: 477
 
iTrader: 0 reviews
Quick question. My wife's stang is a 00.

If I buy a 97-98 4.2 block, with pulley and oil pan/pickup, what else would I need?

I would be using her top end, also her accessories.

Do I need to swap pans and pickups still? Why is switching pans and pickups necessary?

Do I need to switch crank pulleys? Her is a externally balance 3.8 but the flywheel isn't balance and has no wobble.

Also would all the accessories bolt to the block to make it a quick swap?

Why is switching parts off a 01+ v6 needed and the 99-00 parts can't be used?

And last question. What year 4.2 block would be best to buy? And the easiest swap?

96-GT_JOSH

I'D RATHER PUSH MY FORD THAN DRIVE YOUR CHEVY

MM COBRA CLUB #124
96-GT_Josh is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Forums at Modded Mustangs forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome