98 mark viii swap - TCCoA Forums
LinkBack Thread Tools
post #1 of 2 (permalink) Old 08-08-2014, 08:22 AM Thread Starter
Join Date: Oct 2013
Location: chicago
Posts: 1
98 mark viii swap

Hello all. Long time lurker, now looking for some advice. Just completed swapping in a 98 Mark Viii engine and trans into my daughters 67 f100. Had a tune to eliminate the egr, rear O2,s etc. as well as minor adjustments to the shift points, this was done by a reputable tuner in my area thru a SCT. Great running combination except that currently I have no speedo, and the converter seems to want to stay locked up when slowing down, or coming to a stop. It seems to do it constantly, with some times being more severe than others. It has never made the truck die, but it is annoying. The tuner told me that it's related to the VSS/no speedo issue, that the trans doesnt know that the vehicle is slowing down. He suggested that I purchase a speedo calibrater and that we could retune it. But I am still trying to figure out how to adapt the speedo cable to the VSS. I was wondering if a stand alone controller such as Baumanns US Shift might be a better route? I would like to seperate the trans from the engine anyway as far as electronics go to make tracking down any future gremlins easier. Any drawbacks to going this route?
Sorry for the long post, thanks in advance, Dave
Wheelgun is offline  
Sponsored Links
post #2 of 2 (permalink) Old 08-08-2014, 10:00 AM
Seasoned PostWhore

Super Moderator
Join Date: May 2003
Location: Tinton Falls, NJ
Age: 36
Posts: 7,430
Send a message via AIM to MadMikeyL
Send a PM to ClintD on these forums. We swapped an EFI 5.0 into his 75 maverick, and he was able to modify the VSS so that it worked to send the signal to the ECM and also drove the speedo cable, so looking at the trans you have the speedo cable plugged into the VSS which is plugged into the trans. I don't remember exactly what he had to do to make it work like that, but I remember it wasn't very difficult and was done in under a couple hours.

-91 Cougar LS, coming soon, complete overhaul with a 427" Windsor.
-90 XR7 5-speed black on black w/sunroof, MP2, coated rotors, double intercooler, 15%OD, ported heads, comp stage 1 cam, 85mm TB, 90MM LMAF, 80# injectors, and ported big valve heads
-98 Mark VIII LSC, Procharger P600b, TR3650 swap and 3.73s.
-90 SC Automatic rustbucket winter beater
-97 Tbird Sport 4.6 Nice weather daily driver
-"Your buddy Mike is INSANE!" -ClintD's dad
MadMikeyL is offline  

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