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Topic: 3.45's for a 7.5 -- Disregard, bought new. (Read 564 times) previous topic - next topic

3.45's for a 7.5 -- Disregard, bought new.

Lookin for a bit of an upgrade on my 7.5, but not quite ready for 3.73's as to the car getting a fair amount of highway miles still (4000 a year or so). So if anyone has a set of 3.45's and the speedo gear to make them work with an AOD and stock size tires let me know. Aint much more than the 3.27's I have, but unfortunately they don't make something like a 3.55 for a 7.5 and this rear end is rather built so....
-- 05 Mustang GT-Whipplecharged !!
--87 5.0 Trick Flow Heads & Intake - Custom Cam - Many other goodies...3100Lbs...Low12's!

3.45's for a 7.5 -- Disregard, bought new.

Reply #1 –
Do you mean 3.45s? I've never heard of 3.43's for a 7.5"

3.45's for a 7.5 -- Disregard, bought new.

Reply #2 –
Yes. Edited.  Had the GM # stuck in my head:hick:
-- 05 Mustang GT-Whipplecharged !!
--87 5.0 Trick Flow Heads & Intake - Custom Cam - Many other goodies...3100Lbs...Low12's!

3.45's for a 7.5 -- Disregard, bought new.

Reply #3 –
I had two a few moths ago (7.5 TC rears)and ended up tosing one out at the s yard,and giving the other way.I tried for 3 months just to give them away.I'll look around for some gears for you.
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..

3.45's for a 7.5 -- Disregard, bought new.

Reply #4 –
Paul I have the original 7.5 in my bird I believe I have 3.55 in it. Is that possible.
I plan on upgrading to my 8.8 t/c rear w/3.73s.
If you willing to wait the old one is yours.

3.45's for a 7.5 -- Disregard, bought new.

Reply #5 –
Hey Paul,My 7.5 trac loc 3.45's comming out soon to.
less than 3000 on it since I built it.
Old Grey Cat to this.88 Cat, 5.0 HO, CW mounts, mass air, CI custom cam, afr165's, Tmoss worked cobra intake, BBK shorty's,off road h pipe, magnaflow ex. T-5,spec stage 2 clutch, 8.8 373 TC trac loc, che ajustables with bullits on the rear. 11" brakes up front. +

3.45's for a 7.5 -- Disregard, bought new.

Reply #6 –
Quote
Paul I have the original 7.5 in my bird I believe I have 3.55 in it. Is that possible.
I plan on upgrading to my 8.8 t/c rear w/3.73s.
If you willing to wait the old one is yours.


You have 3.45's which would be what I need.  3.55's do not exist in 7.5 size...

Kitz, I just need the gears and speedo gear.
-- 05 Mustang GT-Whipplecharged !!
--87 5.0 Trick Flow Heads & Intake - Custom Cam - Many other goodies...3100Lbs...Low12's!

3.45's for a 7.5 -- Disregard, bought new.

Reply #7 –
3.45 Cool I assumed they were 3.55 by spinning the driveshaft and watching the tire so by putting in my 8.8 and 3.73 I will see that much more of a difference

3.45's for a 7.5 -- Disregard, bought new.

Reply #8 –
Still looking for these gears.....HIT ME UP!!
-- 05 Mustang GT-Whipplecharged !!
--87 5.0 Trick Flow Heads & Intake - Custom Cam - Many other goodies...3100Lbs...Low12's!

3.45's for a 7.5 -- Disregard, bought new.

Reply #9 –
Go with an 8.8 and you can have the 3.55s that will come out of the Sport for the cost of shipping.I'll need a few weeks though.
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..

3.45's for a 7.5 -- Disregard, bought new.

Reply #10 –
NO!  LOL!  My Powertrax locking unit is rated for 800 Lb-Feet of torque.  My axles are stronger than stock too.  And the Locker gets rid of the weakest link in the 7.5 which is the spider gears IMHO....

Too much in this rear right now....If it should happen to grenade at some point though...
-- 05 Mustang GT-Whipplecharged !!
--87 5.0 Trick Flow Heads & Intake - Custom Cam - Many other goodies...3100Lbs...Low12's!

3.45's for a 7.5 -- Disregard, bought new.

Reply #11 –
I had no idea that you had such a strong rear end?LOL...LOL
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..

3.45's for a 7.5 -- Disregard, bought new.

Reply #12 –
Stop staring!:shakeass:
-- 05 Mustang GT-Whipplecharged !!
--87 5.0 Trick Flow Heads & Intake - Custom Cam - Many other goodies...3100Lbs...Low12's!

3.45's for a 7.5 -- Disregard, bought new.

Reply #13 –
Paul,what do you want to pay for gears?I really won't have a need for this rear that I take out.It would be a shame to break it down though.
Old Grey Cat to this.88 Cat, 5.0 HO, CW mounts, mass air, CI custom cam, afr165's, Tmoss worked cobra intake, BBK shorty's,off road h pipe, magnaflow ex. T-5,spec stage 2 clutch, 8.8 373 TC trac loc, che ajustables with bullits on the rear. 11" brakes up front. +

3.45's for a 7.5 -- Disregard, bought new.

Reply #14 –
Seen these on ebay.
 
http://cgi.ebay.com/ebaymotors/Mustang-Mercury-Ford-7-5-Inch-3-45-Ring-Pinion-GT-LX_W0QQitemZ280152237131QQihZ018QQcategoryZ33731QQrdZ1QQssPageNameZWD1VQQ_trksidZp1638.m118.l1247QQcmdZViewItem
Old Grey Cat to this.88 Cat, 5.0 HO, CW mounts, mass air, CI custom cam, afr165's, Tmoss worked cobra intake, BBK shorty's,off road h pipe, magnaflow ex. T-5,spec stage 2 clutch, 8.8 373 TC trac loc, che ajustables with bullits on the rear. 11" brakes up front. +