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7.25" differential help

  • Thread starter Thread starter bamastang66
  • Start date Start date Jul 7, 2010
B

bamastang66

New Member
Nov 16, 2006
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Jacksonville, Alabama
Jul 7, 2010
#1
  • Jul 7, 2010
  • #1
I have a 200 ci straight 6 mustang with a 7.25" differential that was leaking. I changed out the differential cover this past weekend but I cannot figure out how to fill the differential with lube. Is there an access opening that I can't find? Need help please.
 
6

65coupe408w

Member
Mar 26, 2010
192
0
16
Jul 7, 2010
#2
  • Jul 7, 2010
  • #2
I would guess there is a screw in plug on the side somewhere. Also as a fellow I6 user....what ratio gear do you have? I have 3.56 in mine and I really want to go with something more like a 2.80 or 3.00? Trying to find a good source vehicle to find them.
 

rbohm

Founding Member
Apr 12, 2002
6,698
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204
tucson,az
Jul 7, 2010
#3
  • Jul 7, 2010
  • #3
there is a removable plug on the right side of the pinion shaft section of the housing. that is where you fill the diff with gear oil.

as for finding gears for the 7.25 rear end, try autokrafters. they may have a source for new gears, and they usually have used parts available as well. my falcon has the 3.20 rear gear, and as soon as i can find a maverick 8" four lug rear end, my 7.25 goes away.
 

Realmongo

I prefer to be called "Evil Genius"
Founding Member
Oct 10, 2001
2,468
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99
Western Mass
Jul 7, 2010
#4
  • Jul 7, 2010
  • #4
rbohm said:
there is a removable plug on the right side of the pinion shaft section of the housing. that is where you fill the diff with gear oil.

as for finding gears for the 7.25 rear end, try autokrafters. they may have a source for new gears, and they usually have used parts available as well. my falcon has the 3.20 rear gear, and as soon as i can find a maverick 8" four lug rear end, my 7.25 goes away.
Click to expand...

Good luck with that! I know of no 8" Maverick 4-lug rears that ever existed. All of my early 6-cylinder Mavericks had the same 7-1/4 rear. The early V8 car with the 8" had 5 lugs and the 1975 6-cylinder had an 8" but that was 5 lugs.
 
6

65coupe408w

Member
Mar 26, 2010
192
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Jul 8, 2010
#5
  • Jul 8, 2010
  • #5
I am pretty sure there was a 4 lug 8inch for the Maverick. Some of the people over on teh Falcon forum were telling me about it the other day. They use it as a swap whilst retainging stock wheels.

Dont ask me why, 5 lug is more desirable to me...
 

Realmongo

I prefer to be called "Evil Genius"
Founding Member
Oct 10, 2001
2,468
86
99
Western Mass
Jul 9, 2010
#6
  • Jul 9, 2010
  • #6
65coupe408w said:
I am pretty sure there was a 4 lug 8inch for the Maverick. Some of the people over on teh Falcon forum were telling me about it the other day. They use it as a swap whilst retainging stock wheels.

Dont ask me why, 5 lug is more desirable to me...
Click to expand...

The only thing I can think of is maybe the very first 250 Mavericks used them. Both my 170 and 200 Mavericks had the weak rear (I actually blew it up with the 170 while doing a burnout).
 

rbohm

Founding Member
Apr 12, 2002
6,698
550
204
tucson,az
Jul 9, 2010
#7
  • Jul 9, 2010
  • #7
Realmongo said:
Good luck with that! I know of no 8" Maverick 4-lug rears that ever existed. All of my early 6-cylinder Mavericks had the same 7-1/4 rear. The early V8 car with the 8" had 5 lugs and the 1975 6-cylinder had an 8" but that was 5 lugs.
Click to expand...

all 250 powered mavericks through 1974 had four lug 8" rear ends. i know of two at least in my area. i hope to lay my hands on one of them one day.
 
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