Ranger Diff. Tech Q's
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Elder User
Joined: Jul 2002
Posts: 665
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From: Kingsland, GA
Ranger Diff. Tech Q's
OK, looking to convert a 3.73 rear end to a 4.10 LS rear end on a 2000 ranger... The rear end, as I understand it, is a 8.8 inch. I was looking through a parts catalog, and I found some LS conversions listed for "all Ford 8.8 rear ends"... This raises some questions...
1. Would a LS package change the gearing of the rear end? Or is that separate?
2. How is this going to effect my speedo/RABS sensor on the rear axle? What exactly does this take a reading off of? I couldn't see much through the little hole when I had to change it. And yes, my speedo comes off the rear end sensor. I know some others do not.
I don't have an awful lot of experience with working with rear ends, only changing complete rear axles.... I do know how a regular open diff works, but LS packages are a bit of a mystery to me. Anybody have a clue?
1. Would a LS package change the gearing of the rear end? Or is that separate?
2. How is this going to effect my speedo/RABS sensor on the rear axle? What exactly does this take a reading off of? I couldn't see much through the little hole when I had to change it. And yes, my speedo comes off the rear end sensor. I know some others do not.
I don't have an awful lot of experience with working with rear ends, only changing complete rear axles.... I do know how a regular open diff works, but LS packages are a bit of a mystery to me. Anybody have a clue?
Posting Guru
Joined: Jul 2002
Posts: 2,205
Likes: 1
From: Vancouver WA
Ranger Diff. Tech Q's
1. Gears and L/S are seperate issues. One does not affect the other.
2. If it is the same setup as on the F150's, different gears don't affect the speedometer because the sensor is located after the gears and just reads the axle speed. Tire height is what affects the speedo's.
2. If it is the same setup as on the F150's, different gears don't affect the speedometer because the sensor is located after the gears and just reads the axle speed. Tire height is what affects the speedo's.
Thread Starter
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Elder User
Joined: Jul 2002
Posts: 665
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From: Kingsland, GA
Ranger Diff. Tech Q's
OK, so I need a different gear set AND a LS pack... simple enough...
Upon reading my Haynes, I now know that the speedo/RABS sensor comesoff it's own, seperate cmponent in the rear end... Looks like a disc with tabs cut into the outside to trigger the sensor... Hope that piece carries over to the new gear set. Boy, wouldn't it suck to lose the speedo!!!
Upon reading my Haynes, I now know that the speedo/RABS sensor comesoff it's own, seperate cmponent in the rear end... Looks like a disc with tabs cut into the outside to trigger the sensor... Hope that piece carries over to the new gear set. Boy, wouldn't it suck to lose the speedo!!!
Post Fiend
Joined: Feb 2003
Posts: 6,940
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From: Eastern WA
Ranger Diff. Tech Q's
There will be some adjustment(s) that need to be made. I haven't done a Ford rear end myself, but backlash and pinion position come to mind. Backlash adjustment will possibly require the use of a dial indicator. If you have excessive backlash in there, the unit will tend to whine when driving.
