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
Time differences between gear sets: 3.55 vs 3.73
- Thread starter johnny_munyak
- Start date
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
Adam95GT
New Member
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
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
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
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.
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.
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
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.
I would go ahead and get the bearing kit. Might as well since you are in there.
alleymad95GT
Member
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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