would it make sense to get new gears in an automatic? alot of ppl have re geared on here, but most are manuals. Also, what all will new gears do for me if i do?
new gears for automatic
- Thread starter 03 Black GT
- Start date
where do you recommend that I buy and get the gears installed??? I really don't know anyone who can do the job, so I'm gonna have to have someone professionally do it
Actually gear installs are not recommended for anyone but skilled mechanics so do not feel bad about that.
I highly recommend only using FRPP gears. You could get a quote from your dealer to install. It will be done right but they will charge top dollar. Or you could have a good local speed shop that definitely knows what they are doing do it.
Personally I would go with the Ford dealer.
The gears I am recommending are located here:
http://www.fordracingparts.com/parts/part_details.asp?PartKeyField=255
The MSRP is a little high, you may be able to get them cheaper than the price listed on that website.
I highly recommend only using FRPP gears. You could get a quote from your dealer to install. It will be done right but they will charge top dollar. Or you could have a good local speed shop that definitely knows what they are doing do it.
Personally I would go with the Ford dealer.
The gears I am recommending are located here:
http://www.fordracingparts.com/parts/part_details.asp?PartKeyField=255
The MSRP is a little high, you may be able to get them cheaper than the price listed on that website.
streetstang03
unModerator
Motive gears are just as good as FRPP, just cheaper. And definetly go with 4.10s or 4.30s. Just get on a local mustang forum and ask around to find someone who installs gears at a good price and does great work. You're also going to need a handheld tuner at the least to reset your shift points and correct the speedo for the gears.
White Stang
Member
streetstang03
unModerator
Kilgore Trout said:
you just think that b/c you only want to put ford or FRPP on your stang
motive has just as good of a reputation as FRPP. No complaints of gear while like Richmond has.
streetstang03
unModerator
04YELLOWGT
Active Member
Prolly one of the best mods to do to an auto. 4.10s and a 93 oct tune will get you in to the 13s in an auto w/ stock tires. Mind you it will only be a 13.8 or 13.9 with a good launch. I got a 13.9 w/ stock tires and those are the only two thing I did to my car.
joshheat25
Member
I just got 4.10's installed in my auto and I think they are great haven't really got on it all the way out of the hole but am going to tomorrow! and I am heading to the track on Wednesday hoping for a 13.8 or better But right now I don't like the way it shifts coming out of the hole normal acceleration it shifts too quick like below 2G in each gear. Cruising at 70 it tach's like 2,700 which isn't bad I only travel for like 30 minutes at a time. Over all I like the gears and would reccomend them for any auto!
streetstang03
unModerator
joshheat25
Member
Dark Knight GT
I can't get it up......ok that didn't sound right.
I'm running OEM Ford 4.30 gears in my car. There really isn't any difference between factory Ford gears and FRPP gears. I've heard the FRPP gears are designed to have more "bend" so they won't break as easy, but I don't think you have to worry about that on anything other than an all out race vehicle.
Anyhow, I've been running them for a bit over a year now with no problems what so ever. I got mine from Randy Stinchcomb for a good price. Great guy to deal with.
If you can afford it, get a full beairng & seal kit, along with a bigger differential cover for increased fill capacity. I have one from Moser, and it works great. The stock fill capcity is 1.8qts, and most aftermarket girdles increase it to around 2.2-2.5qts. As for rear differnetial fluid, I recommend Amsoil full synthetic fluid. Thats what I'm using. You might want to also get a small bottle of Slip lock/friction modifier since you're using a slip-differential.
Anyhow, I've been running them for a bit over a year now with no problems what so ever. I got mine from Randy Stinchcomb for a good price. Great guy to deal with.
If you can afford it, get a full beairng & seal kit, along with a bigger differential cover for increased fill capacity. I have one from Moser, and it works great. The stock fill capcity is 1.8qts, and most aftermarket girdles increase it to around 2.2-2.5qts. As for rear differnetial fluid, I recommend Amsoil full synthetic fluid. Thats what I'm using. You might want to also get a small bottle of Slip lock/friction modifier since you're using a slip-differential.
03ghoststang
Well-Known Member
i love my 3.73's got them because im going supercharged in the near future with the KB so it's all preference on what you want and what you will be doing to the car 
If I were to gears, it would 3.73's. That's a 5-speed. If it had an auto, it would definitely be 4.10's. My $.02.
Cobra Jay
Member
Dark Knight GT said:
There isn't anything different about them at all. FRPP gears are are made in the same plant and on the same machines as factory installed gears. The 8.8 axle goes into more vehicles than just the Mustang.
Dark Knight GT said:
Where the hell did you hear that from? 
Back to the origional ? I'd go 4.10 or 4.30 in an auto.
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