VEHICLE: 1994 Lincoln Mark VIII

Hi folks! My name is Craig, aka Black Ice LSC. I am a proud, supporting member of the markVIII.org web forum. Over the last year of ownership, I have learned alot about the Lincoln Mark VIII, and have decided to share some of my knowledge with you all. The following pages are some basic tech articles I have written for you to use as a guide if you decide to perform either a JMOD, o a coil conversion, or replace your transmission in your Mark VIII. The first few pages are the ORIGINAL tech article I wrote, as you can see by the date this site was created. It has been BORROWED by www.Lincolnsonline.com to share with other Lincoln owners. If you are reading this, you probably followed my link.

The first section is a photo documentation of how to perform the legendary "JMOD" to your 4R70W transmission. The second part of this webpage is how to perform a COIL SPRING conversion to your Mark VIII suspension, and the last page is how to swap the transmission conpletely. The first section(pages 1-5)is about the JMOD, the second section(pages 6-7)is about the COIL SPRING conversion. And the final page (page 9)is how to SWAP your whole tranmssion for a later model

For the JMOD,you will need the following parts:

New style 1-2 shift accumulator assembly with new upper and lower springs, new style piston, and retainer. Also, you need the new style 2-3 shift accumulator, new spring, and retainer. Also, new seperator plate gasgets(2), '96-later transmission oil pan with deep sump pocket, and filter/gasget. Finally, 12 qts. Mercon V transmission fluid.

Step 1: Drain the transmission. Remove the rubber plug in the bottom of the bell housing. Rotate the motor by turning the crankshaft bolt on the front of the motor, until you see the torque converter drain plug through the access hole. Then remove all the transmission pan bolts, and remove the pan. There will be fluid left in the pan, so caution must be used.

Next step is to remove the old filter from the transmission, and the magnet stuck in the old pan.

Carefully un-plug the 4 electrical connectors from the transmission.

Next, remove the 25 bolts attaching the valve body to the transmission

Before you can remove the seperator plate from the valve body, you must remove the three round covers, and one small bolt in the corner. Be sure you note how these covers come off so you can be sure they go back on the valve body when you are finished with the seperator plate modification.

The next step is to remove the old gasgets from the seperator plate. Use a sharp putty knife, or gasget scraper. Be absolutely sure you remove ALL traces of the old gasgets from the seperator plate.

There is a small filter element located inside the bottom of the transmission case. Be sure not to lose this filter. I took pictures to show what it looks like, and where it goes, incase it should fall out.