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Deciphering Fox Axels

Reply #15
Quote from: Jim_Miller;138371

 
Differance is more like 1-1/4
 


That's what I said above..... ;)
Long live the 4-eyes!  - '83 Tbird Turbo

Deciphering Fox Axels

Reply #16
Quote from: Chuck W;138399
That's what I said above..... ;)

You sure did.
Have never once doubted anything you have said.
:birdsmily:   Objects In Mirror Appear to be Loosing  :birdsmily:

Deciphering Fox Axels

Reply #17
Excellent information Jim. I've added it to the spreadsheet.

Deciphering Fox Axels

Reply #18
I've succeeded at installing an 88 XR7 8.8 inch drum rear end onto my 87 TBird Sport. New quad shocks and diff bushings certainly tightened things up too. Before the install, I measured A = 61 and B = 55.596 as an addition to your spreadsheet. Good spreadsheet. It would be nice to have more of these inter-fox comparison charts developed for our TBird/Cougar modifying obsession (err... I mean hobby).
87 Sport with HO cam, 19# injectors,TB+Upper Intake,87 Mustang EEC, Cloyes double roller timing chain, Kirban adj. fuel regulator and Autometer fuel pres. guage, HO shorty headers + LSC H-pipe and Dynomax Super Turbo Mufflers, Ford Racing 9mm wires, K&N filter / no air resonator, 8.8 XR7 Diff., V rated tires, Project ongoing.

Deciphering Fox Axels

Reply #19
Dunno if this pertains to any info being gathered here, but...I was reading the June '07 Car Craft, and they have an article about 8.8" rears. I noticed they mention that starting in '94 mustangs they had 31 spline axles and carrier. I thought the 31 spline axles were in trucks only? Hmm, could Car Craft have made a boo-boo?
Resident "Idiot".

Formerly TBob5pt0 :shoothead


Quote from: JeremyB;165772
Repairing a lock cylinder that is frozen or sans keys requires a drill, gumption, and a midget on a tricycle.
Quote from: Big_D
Forgot to put on intake hose when starting the car, sucked neighbors cat into intake.

Deciphering Fox Axels

Reply #20
I updated the spreadsheet to account for the bearing race measurements.

Also, here is a picture of an axle from my '87 7.5" (Taken a few years ago)



The race goes almost directly to the flange fillet.

This would lead one to believe the 83-85.5 and 85.5-88 7.5" axles have different bearing race placement and might not be interchangeable. Can anyone confirm/deny this? If all goes as planned, I'll be comparing my '87 axles with '94-'98 and '99-'04 units.

Preliminary measurement of the '94-'98 axles shows the race going from 25.75" to 27" from the splines.

Deciphering Fox Axels

Reply #21
Let's talk housings for a minute, please.  So far I see 2 different lengths, 54" and 56".  May I ask about where the 10" drum rear fits into this (I have one from an 88 XR7), and how about the Lincoln's housing lengths?  Oh, and did anyone confirm the bearing races?
1987 TC project of infinity

Deciphering Fox Axels

Reply #22
Quote from: Jim_Miller;138271

------------------------------
Car = TBird/Cougar
Year =1986-1988
Ring Gear = 7.5
A = 61”
B = 56”
C =
D = Same as C
E =
F = Same as E
G = 4 Lug
------------------------------
Car = TurboCoup ONLY
Year =1987-1988
Ring Gear = 8.8
A = 61”
B = 54”
C =
D = Same as C
E =
F = Same as E
G = 4 Lug
------------------------------


ok i just double checking these cuz i found this on randy's ring and pinion

Ford 8.8  Years Used on Cougar: (1988 - 1996)
10 bolt rear cover with 8.8" ring gear. Rear applications have c/clip axles in both 28 and 31 spline. Front applications are in late model IFS Ford's and will have 28 spline axles using CV joints.

Ford 7.5  Years Used on Cougar: (1980 - 1987)
10 bolt rear cover with 7.5" ring gear. Has c/clip axles with 28 splines.

i am just wanting to double check cuz i know that i have a 4 lug open diff i havent check into more but also know the biggest bang for buck will be gears and traction help thanks for the info though
MAKE IT TAKE IT
"ELEANOR" 1988 :cougarsmily: :burnout: 5.0L, IGNITION UPGRADE, STRUT TOWER BRACE, SHOCK TOWER BRACE, ROAD RIPPER 1000 AOD, STILL TINKERING

"MUDSLUT' 1993 F-150 SUPERCAB FLARESIDE 4X4: STOCK 5.0L, ROAD RIPPER 3000 E4OD, 4.56 gears, Detroit locker rear, Posi-Lok limited slip front, 35X12.50R15 Dick Cepek Crushers, more to come

Deciphering Fox Axels

Reply #23
FTBCF >> Randy's Ring & Pinion

Deciphering Fox Axels

Reply #24
Quote from: JeremyB;182860
FTBCF >> Randy's Ring & Pinion


k reckon i not understand that one lil help plz
MAKE IT TAKE IT
"ELEANOR" 1988 :cougarsmily: :burnout: 5.0L, IGNITION UPGRADE, STRUT TOWER BRACE, SHOCK TOWER BRACE, ROAD RIPPER 1000 AOD, STILL TINKERING

"MUDSLUT' 1993 F-150 SUPERCAB FLARESIDE 4X4: STOCK 5.0L, ROAD RIPPER 3000 E4OD, 4.56 gears, Detroit locker rear, Posi-Lok limited slip front, 35X12.50R15 Dick Cepek Crushers, more to come

Deciphering Fox Axels

Reply #25
FoxTbirdCougarForums is much greater than Randy's Ring & Pinion

Which is to say Randy's is wrong.


Deciphering Fox Axels

Reply #27
I read this thread again, and I guess SRBird answered my question.  The 8.8 88 XR7 is 55.596".  It's safe to assume the '83-'92 Ranger axle will only fit the 54" housing.  The 1993-97 Ranger/mazda axle shaft is exactly 1" longer than the earlier years axle., and is 28 spline.  The explorer is 1/4" longer than that and is 31 spline, and has a diameter of 1.32" (and uses full size Bronco and F150 bearings) So the explorer is out of the question.  But, I'd be curious to know the diameter of the 93-97 Ranger shaft, bearing, and bearing race surface(will it allow full engagement into a XR7 housing?).  Knowing the dimensions, I can maybe come up with something that requires little machining.
1987 TC project of infinity

Deciphering Fox Axels

Reply #28
Still trying to get concrete info on the '93 and newer Rangers 8.8 and 7.5 shaft diameters and bearing races.  I'm trying to use an 88 XR7 rear with 5 lug and 10" drum without changin the rest of the braking system(cost savings), and I'm waiting for the snow to melt so I can get to the rear end I have.  Also, I thought it would be nice to get the info for the 86-88 Tbirds/Cougars with the wider housing and 9" drums.  I'm also wondering about any more info on post #21.  A sticky is a sticky, but wouldn't it be better with all of the options included?
1987 TC project of infinity

Deciphering Fox Axels

Reply #29
V6 mn12's used a 7.5...
93 Festiva L, 193k miles, BP+T/G25MR swap, T3 50trim .48/.42, SRT FMIC, Capri electronics/Rocketchip, 2.5" exhaust
bests: ET 12.86, MPH 110.25, 1.92 short
02 Subaru Impreza WRX, 129k miles
97 Subaru Impreza Outback Sport, 236k miles