"Gut Check" on 4.10's

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03-07-2009, 02:37 PM

#11

S197winstang

3rd Gear Member

Join Date: Mar 2009

Location: Texas

Posts: 950

Go with 3.73- it is the best all around set-up. if you hate it switch to 4.10, gears are not a all or nothing mod..

03-07-2009, 02:47 PM

#12

S197winstang

3rd Gear Member

Join Date: Mar 2009

Location: Texas

Posts: 950

Quote:

Originally Posted by vaporstang

From reading up on MF, if you have an automatic, you don't want to go above 3.73s.

On a manual, going from 3.55s to 3.73s is not worth it - I assume going from 3.31s to 3.73s would be. Someone chime in if I'm wrong....

You are correct.

03-07-2009, 07:03 PM

#13

VistaGT

4th Gear Member

Join Date: Feb 2008

Location: NJ

Posts: 1,496

Dude 4.10s are nasty! The only problem is lack of traction!!!!

03-07-2009, 07:16 PM

#14

vaporstang

2nd Gear Member

Thread Starter

Join Date: Apr 2008

Location: Illinois

Posts: 269

Thanks everyone for your responses - it's a great help! I meant to get out to the dealership this morning for estimates, but ended up doing my taxes.

As stated earlier, I believe my dealership knows what they are doing. However, when I ask for the estimate, I'm not mentioning new bearings just to see if they recommend them or automatically include them. If they don't, I'll start looking for a different shop. (I know it ain't much of a test.) I'll also be asking about the no-whine guarantee also.

03-07-2009, 07:19 PM

#15

vaporstang

2nd Gear Member

Thread Starter

Join Date: Apr 2008

Location: Illinois

Posts: 269

Quote:

Originally Posted by VistaGT

Dude 4.10s are nasty! The only problem is lack of traction!!!!

Are you saying I need different tires and/or suspension mods?

03-07-2009, 07:27 PM

#16

kpaulhus

4th Gear Member

Join Date: Oct 2006

Location: Jax, FL

Posts: 1,554

I am happy to see the post about the 28" tires....I just had mine installed today and my 4.10's are going in in 2 weeks to make up for the extra tire weight.

03-07-2009, 07:32 PM

#17

Stkjock

Retired Mod

Join Date: Jan 2007

Location: Long Island, NY

Posts: 7,658

IMO (i have them) the only issue with 4.10s is if you do a lot of long highway driving you pull a lot of RPM @ 75, a 28" tire will kill some of the effect

03-07-2009, 07:49 PM

#18

moosestang

6th Gear Member

Join Date: Sep 2006

Location: Gainesville, FL

Posts: 11,278

Quote:

Originally Posted by vaporstang

According to an Excel spredsheet gear calculator I got on MF, the redline speed for 4.10s on a manual w/ 235/50R18 tires is 184mph.

(I can't get the file to attach and I don't remember if he had set up a link....)

It's closer to 199mph and that's at the stock rev limiter of 6250.

http://www.angelfire.com/fl/procrastination/rear.html