auto and gears

[thebreeze72]

i have ford motorsport 4.10's new in the box for an 8.8 i was asking $150.00 make me an offer and pick em up asap and try them out you won't be upset with your choice. call dave 724 - 425 -1911

[scott2001GT]

4.10's in the auto for a daily and 4.30's for a track whore. I had 4.10's in my 01 gt auto and daily drove it for 3 years. Also I could still hit around 130 in 3rd with the 4.10's so top speed really isn't an issue.

wow great info man! thanks alot!

and I don't have 150 at the time lol sorry! but thanks!

[Inkdcountryboy]

4:30's FTW!!

[scott2001GT]

4:30's FTW!!

but not the top speed

[pRojekt02GT]

Really, Dave? I might have to take you up on that if you got them within the next couple of weeks..Just trying to recover lol.

[Inkdcountryboy]

scott you can come over ill take you for a ride in my 01 gt with 4:30's

[Slow01GT]

Honestly 4.30's wouldn't lower the top end too dramatically over the 4.10's but I still think thats a little steep for a daily driver with the auto. 5 spd I would say go for it.

[scott2001GT]

it's only a weekend car. I need 120mph atleast. and idk if a none F.I 2V with pull 4:30's all that well. I live it STL Lol

[scott2001GT]

scott you can come over ill take you for a ride in my 01 gt with 4:30'

auto?

[Inkdcountryboy]

5spd

[scott2001GT]

oh well man that doesn't help!

[pRojekt02GT]

..at least he tried..lol

[Troll]

http://www.allfordmustangs.com/Detailed/608.shtml

here's a link to a calculator. It uses a 5-speed, but your AOD is a 1:1 Ratio in 3rd gear (not OD).

you can play around with it, but looks to me like 3.90's will put you at 120mph at 6,125 RPM.

hope this helps.

edit: I see you're not concerned about the 3rd gear at 1:1.

I don't know what the OD factor is on an auto, but you can plug in different numbers for the 5th gear on that calculator.

Even with a 4.56 at a .80 OD, you'd be 120mph at 5,7xx rpm.

I'd say you'll be fine with 4.30s.

[pRojekt02GT]

Now that you got me playing with it, I feel kinda like a dumbass, but can't figure it out...

[Troll]

enter your ratio, enter the speed, then hit "calculate"

down below, it gives you the RPM for each gear at that speed.

[pRojekt02GT]

LOL..

[Slow01GT]

The ratios for the 4R70W are:
1st = 2.84
2nd = 1.55
3rd = 1
4th = .70
Hope that helps a bit

[steve-O]

Im about to go pick up my auto with 4.10's from SLP. Ill let ya know what its like

[steve-O]

alright, got my car back. has good punch off the line with the 87oct tune, and great punch off the line on the 93oct tune (sct X3) cruises at 2600rpm @70mph. still hits 110mph in 3rd gear, same as with the 3.27 gears which i thought was kinda wierd

[White5.0]

4.30s