4.10's installed!!!!!!!!

tucker-tx · Jul 18, 2004

Just got back from picking up my car after the gear swap. Holy F'ING hell!! Everyone needs 4.10's! The car really feels like it shed some serious weight. Searching through all the gear posts led me to go the 4.10 route instead of the 3.73, and now I feel confident to pass along the info to anyone else considering a gear swap. My car is a daily driver and at 80mph I tacked just over 2600 RPM, not bad. Also if anyone lives in the dallas area, my guy only charged $140 for the install,and that was with fluid and the pinion bearing. Not bad, if anyone is at all interested please PM me and I'll give you his contact stuff. Thanks for all the helpful advice fellow stangnet members and in the words of many before me: DON"T FEAR THE GEAR

Joel's98GT · Jul 18, 2004

good to hear

Matto · Jul 18, 2004

Yep, 4.10's are the ****. I wouldn't have it anyother way. I love being able to blip the throttle and the car seems like its packing 400 HP (well maybe not that much, but cool to pretend)

twogts4us · Jul 18, 2004

I'm starting to lean toward 4.10s. I've been driving my wife's 01 around the last few days and am getting hooked. Plus the A/C doesn't affect the performance as much as in my 02 with 3.73s.

ProCharger GT · Jul 18, 2004

what is your rpm's around 60-70 mph? also, how much top end did you lose? i was considering gears but with gas being as expensive as it is and i only get about 15-17 mpg (hopefully only a tuning issue that can be fixed), i have to consider the price of fuel into any further mods.

99StanGT · Jul 18, 2004

410 is a real nice gear, but if ur feeling a little ballsy try 430's there even better on 99+ GT's

CottonBurnerz · Jul 18, 2004

tucker-tx said:
Just got back from picking up my car after the gear swap. Holy F'ING hell!! Everyone needs 4.10's! The car really feels like it shed some serious weight. Searching through all the gear posts led me to go the 4.10 route instead of the 3.73, and now I feel confident to pass along the info to anyone else considering a gear swap. My car is a daily driver and at 80mph I tacked just over 2600 RPM, not bad. Also if anyone lives in the dallas area, my guy only charged $140 for the install,and that was with fluid and the pinion bearing. Not bad, if anyone is at all interested please PM me and I'll give you his contact stuff. Thanks for all the helpful advice fellow stangnet members and in the words of many before me: DON"T FEAR THE GEAR

I also got my gear changed in dallas.. did you got yours changed at the mustang shop?

menasci · Jul 19, 2004

tucker-tx said:
My car is a daily driver and at 80mph I tacked just over 2600 RPM, not bad.

What???? 2600rpm at 80mph???
Check again.
80 mph is more like 2900rpm

tucker-tx · Jul 19, 2004

menasci said:
What???? 2600rpm at 80mph???
Check again.
80 mph is more like 2900rpm

Okay so I just did some more freeway driving, and I"m not trying to wave the BS flag as you mentioned before, however I"m right under 2700 @ 80mph, sorry if you don't agree but thats what I got.

tucker-tx · Jul 19, 2004

CottonBurnerz said:
I also got my gear changed in dallas.. did you got yours changed at the mustang shop?

No, I was referred to a guy by a sales associate at Dallas Mustang, he did it at his house, and I had my car back in less than two hours. Let me know if you need some more info.

menasci · Jul 19, 2004

tucker-tx said:
Okay so I just did some more freeway driving, and I"m not trying to wave the BS flag as you mentioned before, however I"m right under 2700 @ 80mph, sorry if you don't agree but thats what I got.

That sounds weird to me.
I wonder if your speedo is calibrated properly?

tucker-tx · Jul 19, 2004

menasci said:
That sounds weird to me.
I wonder if your speedo is calibrated properly?

I don't know man, I bought my speed-cal at Dallas Mustang and followed everything accordingly. Don't know. I appreciate the concern, I'll look into it, let me know if you've got any other suggestions.

menasci · Jul 19, 2004

tucker-tx said:
I don't know man, I bought my speed-cal at Dallas Mustang and followed everything accordingly. Don't know. I appreciate the concern, I'll look into it, let me know if you've got any other suggestions.

Here, use this:

http://www.wcfords.com/stuff/calcs/EGTcalc/egtcalc.php

tucker-tx · Jul 19, 2004

menasci said:
Here, use this:

http://www.wcfords.com/stuff/calcs/EGTcalc/egtcalc.php

Hey, thanks for that link!! It looks like the speed-cal may not have worked just right. I should be a little closer to 2900 than 2700 from what the calculator states. I'll look into it tomorrow and let everyone know what the outcome was. I really wasn't trying to throw any BS out, that's just what I saw on the tach. Thanks again.

menasci · Jul 19, 2004

No problem!
Just trying to help a fellow Stanger out.
Sorry 'bout the thing.
I calibrated mine with a Hypertech programmer.

kboy262 · Jul 19, 2004

tucker-tx said:
Hey, thanks for that link!! It looks like the speed-cal may not have worked just right. I should be a little closer to 2900 than 2700 from what the calculator states. I'll look into it tomorrow and let everyone know what the outcome was. I really wasn't trying to throw any BS out, that's just what I saw on the tach. Thanks again.

Your transmission is the T-3650. Anyway the overdrive ratio is .62 unlike the T-45 found in '02 and older have a .68. Your speedo is correct. At 70 mph you should be around 2300 rpm and at 80 mph around 2600 rpm. The T-45 at 80 mph is at 3000 rpm and at 70 mph at 2550 rpm

menasci · Jul 19, 2004

kboy262 said:
Your transmission is the T-3650 or T-3560 (I get the numbers mixed up) Anyway the overdrive ratio is .62 unlike the T-45 found in '02 and older have a .68. Your speedo is correct. At 70 mph you should be around 2300 rpm and at 80 mph around 2600 rpm. The T-45 at 80 mph is at 3000 rpm and at 70 mph at 2550 rpm

The diff. between the 2 trannys rpm's are not that much different.
They are almost identical.

kboy262 · Jul 19, 2004

No they are not. 80mph in the new tranny is 2600rpm. T-45 at 80mph is 3000rpm I have friends with both trannys running 4.10 and this is what they run at. Plus the gear calculator on the Corral shows it.

tucker-tx · Jul 19, 2004

kboy262 said:
Your transmission is the T-3650 or T-3560 (I get the numbers mixed up) Anyway the overdrive ratio is .62 unlike the T-45 found in '02 and older have a .68. Your speedo is correct. At 70 mph you should be around 2300 rpm and at 80 mph around 2600 rpm. The T-45 at 80 mph is at 3000 rpm and at 70 mph at 2550 rpm

Thanks for the info, I"m headed up to Dallas Mustang tomorrow for an o/r H so I'll have them take a look just to be safe. I do appreciate the info. Off topic here, are you the one with the video of your idle and cams? If so man those sound AWESOME, I think I"m going to throw in some comp 268h's as well when the finances get replenished! Did you change your springs?

kboy262 · Jul 19, 2004

Yep, that is my car. Thanks for the compliments. Anyway I did not do the spring change. The cams do not have much lift. (.495 lift what the cam card said) Anyway, I am not worried because I will be switching to a PI motor in the future. The springs in the PI heads are a little stronger than what I have. You can do just do the swap without worrying. Enjoy the gears. I will be getting mine within a couple of months.

4.10's installed!!!!!!!!

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