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Time differences between gear sets: 3.55 vs 3.73

  • Thread starter Thread starter johnny_munyak
  • Start date Start date May 3, 2010
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lehrskee

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Apr 14, 2010
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May 9, 2010
#21
  • May 9, 2010
  • #21
yeah ive done a ton of reading on this and i hate to keep the subject going but i will be bringing my car to the shop to have this done and i would just like to make sure i got everything i need for them to do it. wut drive gear and driven gear will i need for 4.10s on a 94 mustang gt 5 speed? also will they be able to do this without pulling the transmission? just wondering how much to expect it to cost me. thanks
 

final5-0

Mustang Master
Apr 6, 2003
6,817
12
79
DFW Texas
May 9, 2010
#22
  • May 9, 2010
  • #22
lehrskee said:
yeah ive done a ton of reading on this and i hate to keep the subject going but i will be bringing my car to the shop to have this done and i would just like to make sure i got everything i need for them to do it. wut drive gear and driven gear will i need for 4.10s on a 94 mustang gt 5 speed? also will they be able to do this without pulling the transmission? just wondering how much to expect it to cost me. thanks
Click to expand...

Search out speedcal ... I think it is called IIRC

It is an electronic interface that will adjust the electronic signal from
the sender mounted on the side of the trans

I have not used one but from the posts I have seen it seems like
it is around 100 bux but you do not have to do any work with
the trans

I know many here have used this device so maybe one of them might fill
in the blanks for you

Grady
 
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lehrskee

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Apr 14, 2010
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May 9, 2010
#23
  • May 9, 2010
  • #23
yeah i looked it up last night. $100. not a bad price. basically i just want to go the route that will be cheaper for parts + labor. i know the speedo gears and whatnot are cheaper but will probably cost me a lot more in labor.
 

Adam95GT

New Member
Aug 14, 2006
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Burlington, NJ
May 9, 2010
#24
  • May 9, 2010
  • #24
lehrskee said:
yeah i looked it up last night. $100. not a bad price. basically i just want to go the route that will be cheaper for parts + labor. i know the speedo gears and whatnot are cheaper but will probably cost me a lot more in labor.
Click to expand...

Spedo gears take like 5 minutes to change
 
L

lehrskee

New Member
Apr 14, 2010
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May 9, 2010
#25
  • May 9, 2010
  • #25
Adam95GT said:
Spedo gears take like 5 minutes to change
Click to expand...

5 minutes to change both of em? i know one of them is simple. the one on the tailshaft of the tranmission is the one i was reading about. what is involved in changing that one. also do you know what gears i will need for 4.10s thanks
 

final5-0

Mustang Master
Apr 6, 2003
6,817
12
79
DFW Texas
May 9, 2010
#26
  • May 9, 2010
  • #26
No No No!

The drive gear is not ON the tailshaft

It is IN the tailshaft

I don't see how anybody could replace it in just a few min's

btw ... it is the driven gear that is easy to replace

Grady
 
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lehrskee

New Member
Apr 14, 2010
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May 9, 2010
#27
  • May 9, 2010
  • #27
final5-0 said:
No No No!

The drive gear is not ON the tailshaft

It is IN the tailshaft

I don't see how anybody could replace it in just a few min's

btw ... it is the driven gear that is easy to replace

Grady
Click to expand...

yeah i didnt think it was a simple job thats why i was asking. so what do you think would be cheaper. getting the speed cal and having a shop install that while they're doing the gears, or getting the driven and drive gears. thanks again for the help
 

Last5.0

Active Member
Nov 9, 2003
404
1
26
May 9, 2010
#28
  • May 9, 2010
  • #28
speedcal would probably be cheaper and quicker depending on what your shop charges for hourly labor rate. To change the gear out the tranny will have to be drained and the tailshaft unbolted then removed. After changing the gear it will have to be put back together with sealant and then refilled. Doubt all that would be less than a speedcal unless you do it yourself.
 
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lehrskee

New Member
Apr 14, 2010
38
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0
May 9, 2010
#29
  • May 9, 2010
  • #29
Last5.0 said:
speedcal would probably be cheaper and quicker depending on what your shop charges for hourly labor rate. To change the gear out the tranny will have to be drained and the tailshaft unbolted then removed. After changing the gear it will have to be put back together with sealant and then refilled. Doubt all that would be less than a speedcal unless you do it yourself.
Click to expand...

yeah $65 an hour. im looking at $160 for the gears. $150 for the installation kit. $300-$400 for labor. another $100 for speed cal and any labor that takes.
 

Last5.0

Active Member
Nov 9, 2003
404
1
26
May 9, 2010
#30
  • May 9, 2010
  • #30
The speedcal just plugs in on the vss harness going into the side of the transmission and would probably take only 5 mins to install. Easily done yourself too.
 
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lehrskee

New Member
Apr 14, 2010
38
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0
May 9, 2010
#31
  • May 9, 2010
  • #31
Last5.0 said:
The speedcal just plugs in on the vss harness going into the side of the transmission and would probably take only 5 mins to install. Easily done yourself too.
Click to expand...

ok ill get that probably then thanks
 
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lehrskee

New Member
Apr 14, 2010
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May 9, 2010
#32
  • May 9, 2010
  • #32
i found this gear set kit at americanmuscle. looks like a good deal. comes with 4.10's speed cal and 3 bottles of royal purple synthetic gear oil. $285. just wanted to make sure this is the correct gear oil i would need. and my other question is the only other things i would need to install is friction modifier and the gear instalation kit correct? please let me know if im missing anything. http://www.americanmuscle.com/speedcal-410-gear-oil-kit.html
 

alleymad95GT

Member
Jul 14, 2009
204
0
16
Okemos, Michigan
May 10, 2010
#33
  • May 10, 2010
  • #33
Actually, I think that the Royal Purple already has the friction modifier in it.

I would go ahead and get the bearing kit. Might as well since you are in there.
 
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lehrskee

New Member
Apr 14, 2010
38
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0
May 10, 2010
#34
  • May 10, 2010
  • #34
alleymad95GT said:
Actually, I think that the Royal Purple already has the friction modifier in it.

I would go ahead and get the bearing kit. Might as well since you are in there.
Click to expand...

so an instalation kit and bearing kit?
 

alleymad95GT

Member
Jul 14, 2009
204
0
16
Okemos, Michigan
May 10, 2010
#35
  • May 10, 2010
  • #35
I am quite sure that the gears themselves have everything you need for installation other than the bearings. I guess I am not quite sure what you mean by "installation kit."
 
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