3.8L Taurus vs. 3.8L Thunderbird - TCCoA Forums
LinkBack Thread Tools
post #1 of 1 (permalink) Old 01-13-2004, 12:49 PM Thread Starter
Iowa Chapter Director
Uber Luber
TCCoAAC Member
Thomas's Avatar
Join Date: Jul 2002
Location: Ames, Iowa
Age: 35
Posts: 8,978
3.8L Taurus vs. 3.8L Thunderbird

Differences in Engines: 89-95 3.8 Taurus vs. 89-97 3.8 Thunderbird

Block and Internal Differences:

- The Taurus' transmission bolt pattern on the block is different to accomodate for the FWD transmission

- FWD 3.8L models have a balance shaft, the RWD models do not. Ford decided to omit the balance shaft and instead put huge, rubbery, fluid filled motor mounts on the RWD models. Because of this, there are minor differences in the cam setup, and major differences in the block. (Openings not bored, oil passages slightly different.)

- the RWD cam has a spacer instead of a balancer drive gear. Also the RWD balancer bores are unfinished. The only RWD 3.8L that came with a balance shaft was the 1988 Thunderbird/Cougar.

Intake Differences:

- The Taurus' upper intake from plenum to throttle body bore measures 14.5". The Thunderbird's measures 15.25". Whcih means there is a difference of 3/4". This was due to transverse mounting of the engine in the FWD Taurus. The upper intake of a Thunderbird is too big to fit under a Taurus' hood.

- The Taurus upper intake plenum has a larger throttle body bore.

- 96-97 3.8 Thunderbirds have a coolant bypass built into the upper plenum beneath the throttle body passage. 89-95 do not.

- 96-98 mustangs and 96-97 thunderbird intakes have smaller 6mm bolt holes than the 89-95 taurus, thunderbird, and 94-95 mustang which are 8mm

Anyone feel free to post anything more they may know about this subject

1988 Notch Mustang: - 438W, direct port n2o, t56
2003 SVT Focus: - SCT X3 tuner

Last edited by Thomas; 01-13-2004 at 12:56 PM.
Thomas is offline  
Sponsored Links

Quick Reply

Register Now

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

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


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

Email Address:


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

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