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Technical => Drivetrain Tech => Topic started by: jonwayne1988 on May 14, 2011, 06:57:46 PM

Title: 89 Mark VII LSC rear end and disk brake conversion.
Post by: jonwayne1988 on May 14, 2011, 06:57:46 PM
OK I have 87 Bird with a 5.0 and it has a 7.5 rear end in it with drum brakes. Well today I when down to the junk yard and found a 89 Mark VII LSC with a 8.8 and disk brakes. My question is has any one put that rear end in there bird. Would this be an easy swap? I would like to have 5 lug, disk brakes, and an 8.8 rear end all at the same time. O and is there a way to tell what gearing the LSC has and what gearing my 7.5 has in it. Thanks
Title: 89 Mark VII LSC rear end and disk brake conversion.
Post by: tobeybj on May 14, 2011, 07:09:16 PM
Checkout coolcats.net.  This is a fairly straightforward swap and what I have planned for my 86 5.0.

http://www.coolcats.net/tech/advanced/4to5lug.html
http://www.coolcats.net/tech/general/axleinfo.html
Title: 89 Mark VII LSC rear end and disk brake conversion.
Post by: jonwayne1988 on May 14, 2011, 07:12:37 PM
Thank I have already looked over all that info.
Title: 89 Mark VII LSC rear end and disk brake conversion.
Post by: Beau on May 14, 2011, 07:31:11 PM
Direct swap. While you're at the junkyard, find a 88-96 F-150, and make sure it has 3.55 r&p, grab that to throw in your 8.8 Mark 7 rear.

With the discs out back, you'll probably want/need to upgrade your master cylinder and prop valve...search here and coolcats for the pertinent details.
Title: 89 Mark VII LSC rear end and disk brake conversion.
Post by: jonwayne1988 on May 14, 2011, 07:44:55 PM
OK sounds good but still does any one know how to tell what gears are in my car and what gears are in the mark VII?
Title: 89 Mark VII LSC rear end and disk brake conversion.
Post by: daminc on May 14, 2011, 07:53:29 PM
there's a tag on one of the cover bolts... code is in coolcats page above
Title: 89 Mark VII LSC rear end and disk brake conversion.
Post by: 20thanniver-ls on May 14, 2011, 08:34:48 PM
LSC's had 3.27's, and trac-loc was an option.  Look on the door sticker on your car for the axle code and go to the above links to decode.
Title: 89 Mark VII LSC rear end and disk brake conversion.
Post by: jonwayne1988 on May 14, 2011, 08:45:10 PM
Ok cool and thing I need when going form drums to disk?
Title: 89 Mark VII LSC rear end and disk brake conversion.
Post by: Beau on May 14, 2011, 11:15:31 PM
Jesus christ man, it's ALL on coolcats.
Title: 89 Mark VII LSC rear end and disk brake conversion.
Post by: Beau on May 14, 2011, 11:15:46 PM
Jesus christ man, it's ALL on coolcats. or even here.
Title: 89 Mark VII LSC rear end and disk brake conversion.
Post by: jonwayne1988 on May 15, 2011, 12:14:25 AM
Jesus christ man, I'm just trying to make sure I get everything the first time. I have read stuff on here and on coolcats. I'm just trying to find any problems I might run in to or any parts to be careful not to miss.
Title: 89 Mark VII LSC rear end and disk brake conversion.
Post by: Beau on May 15, 2011, 01:30:38 AM
Aight...fair enough...sometimes it takes awhile to get things in my head too...no disrespect meant.
Title: 89 Mark VII LSC rear end and disk brake conversion.
Post by: jonwayne1988 on May 15, 2011, 08:47:56 AM
It's all good. No harm done. I just want to have every thing ready to go and get it all done at once. It is my only car I have that I can drive so it can't be down.
Title: 89 Mark VII LSC rear end and disk brake conversion.
Post by: 1BadBird on May 15, 2011, 08:16:24 PM
You should also grab the E-brake cables. The short section that attaches to the caliper. I had that rear axle in my bird for a while, but with a real worn 2.3L, I couldn't keep it in 5th if I hit a little hill.
Title: 89 Mark VII LSC rear end and disk brake conversion.
Post by: jonwayne1988 on May 15, 2011, 11:25:05 PM
OK good to know. I was thinking I was going to need the E-brake cable. I'm going to the junk yard early morning and pulling the rear end.
Title: 89 Mark VII LSC rear end and disk brake conversion.
Post by: jonwayne1988 on May 16, 2011, 04:45:08 PM
Ok so I go the complete rearend today. I noticed that the brake lines a in different locations. Is there any info that would let me know what I need to do with the brake lines? I'm planing on swapping this rear end in this weekend. I need to replace to wheel studs on it and while I'm at it I'm going to do a brake job on it as well.
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