Rebuilding Rearend

Mavrick

Founding Member

Aug 29, 2002

2,264

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46

Collingwood, ON

Jul 12, 2004

#1

• Jul 12, 2004

• #1

I have an 8.8 here that im going to rebuild within the next 3 weeks. I'm going to buy new clutch packs (going to look into getting extra clutch packs as well, any info on that?), new 3:73 gear and pinion, and going to clean it up real nice. I am also planning on getting some 5lug rear axles (aerostar/ranger) from the scrap yard.

Can you guys give me some prices for comparison? Any tips or pointers..

Thanks.

BTW putting it together myself with help, so installation is free.

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

31,179

33

129

Jul 12, 2004

#2

• Jul 12, 2004

• #2

i dont know, but i think with the clutch packs, guys will use the best of their old ones, to pack it one clutch tighter. i could be wrong.
but you are on the second page, so bump.

 

bgjohnson

Founding Member

Sep 1, 2002

963

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16

johnston,iowa

Jul 12, 2004

#3

• Jul 12, 2004

• #3

yes they do sell performance clutch packs, and make sure you have tools to measure pinion depth and backlash, because if those are off then it will whine and whurr like mad.

 

blkstangman88

New Member

Apr 6, 2004

646

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0

Jul 12, 2004

#4

• Jul 12, 2004

• #4

how exactly do u check the backlash and pinion depth?.......i ask cuz i had a shop install a new rear axle on my car and when ever i get over 40 mph the rear axle whines like no other.

 

89MustangGX

I have nothing productive to add!

Jul 3, 2001

10,262

1

0

Mill Creek, WA

Jul 12, 2004

#5

• Jul 12, 2004

• #5

blkstangman88 said:

how exactly do u check the backlash and pinion depth?.......i ask cuz i had a shop install a new rear axle on my car and when ever i get over 40 mph the rear axle whines like no other.

Click to expand...

You need to have the right tools for it -- if it makes noise like that, the shop did not install correctly. Take it back.

As for some prices, there are a few places to get FMS gears for about $139, and the Trac-Lok kits are usually around $50. All the bearings and whatnot can get expensive, but it's probably worth it to change them all since you're in there ... I'd figure $100 for everything else.

 

Mavrick

Founding Member

Aug 29, 2002

2,264

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46

Collingwood, ON

Jul 13, 2004

#6

• Jul 13, 2004

• #6

I'm getting the ring and pinion, and all bearings (except for wheel bearings i think) for $350 (i think this price includes clutch packs too). This is Canadian.. and im working for a shop right now, we're going to install them. Some really experienced guys, so no worries there.

Is that right, to use the best of the old clutch packs to squeeze in?

 

TrophyHead

15 Year Member

Mar 18, 2003

1,195

11

49

PA

Jul 13, 2004

#7

• Jul 13, 2004

• #7

http://www.corral.net/tech/drivetrain/gears.html

Not sure if you already seen this but here ya go.

 

Mavrick

Founding Member

Aug 29, 2002

2,264

0

46

Collingwood, ON

Jul 13, 2004

#8

• Jul 13, 2004

• #8

Why c-clip eliminators? How will that benefit me and what do they cost?

 

M

mooktank

New Member

Jul 7, 2004

237

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0

Jul 13, 2004

#9

• Jul 13, 2004

• #9

you dont necessarily need a pinion depth setting tool but it makes it a lot easier. You can determine correct pinion depth from using gear marking compound and getting the correct pattern. Backlash all you need is a dial indicator. Dont forget an inch-pound torque wrench for the pinion bearing preload. Get C clip eliminators if possible as well.

 

M

mooktank

New Member

Jul 7, 2004

237

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0

Jul 13, 2004

#10

• Jul 13, 2004

• #10

the C clip eliminators eliminate a weak design that lets the wheels fall out if you break an axle shaft. I think there's a full floater kit available somewhere for an 8.8 never seen it tho. That would be the best.

 

bart

New Member

May 16, 2003

243

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0

tn

Jul 13, 2004

#11

• Jul 13, 2004

• #11

when i rebuilt my rear with 3.73s i had a friend who knew a way to pack an extra clutch in there, ill ask him the deal on that. and we also put an S-spring from an f-150 in there. as for all the backlash and whatnot, i just watched that part, dont really know what he did. the rear was alot "tighter" feeling after all was said and done.

 

M

mooktank

New Member

Jul 7, 2004

237

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0

Jul 13, 2004

#12

• Jul 13, 2004

• #12

back lash is adjusted by moving the carrier that holds the ring gear side to side so it gets either closer or further away from the pinion teeth. You measure the amount of "free play" it has before hitting a pinion tooth. usually you want from .008" to .014" and it's always better to have more than less. low backlash can ruin gears easily.

 

Mavrick

Founding Member

Aug 29, 2002

2,264

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46

Collingwood, ON

Jul 14, 2004

#13

• Jul 14, 2004

• #13

Cool.. thanks for the info guys. I'm not going to worry about the c clip eliminators.

What is the benefit of using an F150 S-spring as apposed to the regular mustang spring?

 

bart

New Member

May 16, 2003

243

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0

tn

Jul 14, 2004

#14

• Jul 14, 2004

• #14

Mavrick said:

Cool.. thanks for the info guys. I'm not going to worry about the c clip eliminators.

What is the benefit of using an F150 S-spring as apposed to the regular mustang spring?

Click to expand...

well its bigger and puts more pressure on the clutches (i think thats what josh said so dont hold me to that). i saw a difference when i did it, well at least i think i did. rear was alot tighter and reacted alot quicker. they are like 20 bux. look on ebay. a place called mustangwarehouse always has them. its a pretty common upgrade from what ive seen.

 

Mavrick

Founding Member

Aug 29, 2002

2,264

0

46

Collingwood, ON

Jul 14, 2004

#15

• Jul 14, 2004

• #15

Sweet, i'll have to look into it!

 

S

SlowGT

Founding Member

Jun 17, 1999

826

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0

Columbia Co, PA

Jul 16, 2004

#16

• Jul 16, 2004

• #16

Here's a little writeup I did that you may find useful