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  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech

How much faster in 1/4 mi with 4.10's?

  • Thread starter Thread starter 69fb00GT
  • Start date Start date Jun 19, 2004

69fb00GT

New Member
May 26, 2004
117
0
0
Southwestern PA
Jun 19, 2004
#1
  • Jun 19, 2004
  • #1
I'm trying to decide whether or not to get the gears....it's only a question for me because i do a lot of highway driving. usually 1000 mi a month of highway.

Anyway, after reading that they only increase your rpm about 3-400 at 70 mph, I figured it shouldn't affect my fuel mileage too bad.

However, unless i'm going to see significant 1/4 mi time improvements, i'm just gonna keep the 3.27's.

So, how many tenth's did you guys take off with your 4.10's? I'm not looking for hypothetical #'s here...but real world results.
 

5.0_GT_kid

20+ Year Stangneter
Apr 18, 2004
1,155
1
39
Largo, Florida
Jun 19, 2004
#2
  • Jun 19, 2004
  • #2
69fb00GT said:
I'm trying to decide whether or not to get the gears....it's only a question for me because i do a lot of highway driving. usually 1000 mi a month of highway.

Anyway, after reading that they only increase your rpm about 3-400 at 70 mph, I figured it shouldn't affect my fuel mileage too bad.

However, unless i'm going to see significant 1/4 mi time improvements, i'm just gonna keep the 3.27's.

So, how many tenth's did you guys take off with your 4.10's? I'm not looking for hypothetical #'s here...but real world results.
Click to expand...

I dunno about modular engines but I've heard it's average to take about .3 off the ET of the 94-95 5.0's
 
T

TARZAN

New Member
Apr 25, 2003
446
0
0
Philly MS
Jun 19, 2004
#3
  • Jun 19, 2004
  • #3
Well, I had a couple other mods, but from best I can tell, i gained close to half a second (thats right .5), but ONLY AFTER I learned how to launch and not spin so bad

Also, MPG's aren't that bad at all. The worst part on gas mileage, is when you want to feel those new gears

-Will
 
R

r281

MARRIED!!
May 21, 2004
25
0
0
S. California
Jun 19, 2004
#4
  • Jun 19, 2004
  • #4
69fb00GT said:
I'm trying to decide whether or not to get the gears....it's only a question for me because i do a lot of highway driving. usually 1000 mi a month of highway.

Anyway, after reading that they only increase your rpm about 3-400 at 70 mph, I figured it shouldn't affect my fuel mileage too bad.

However, unless i'm going to see significant 1/4 mi time improvements, i'm just gonna keep the 3.27's.

So, how many tenth's did you guys take off with your 4.10's? I'm not looking for hypothetical #'s here...but real world results.
Click to expand...


My brother has 4.10's in his 5-speed 96 GT and my husband's 5-speed 2001 GT has the stock gear ratio. You can definately tell the 96 wastes way more gas on the freeway.

My brother took it to the track before and after he put in the gears. He still hit 15's I think.

You also need better tires for those kinds of gears. I sometimes find myself CHIRPING the tires. I'm not sure how to spell that. So, unless you are going to be racing it often I would stick to 3.27's. Gas is expensive.
 

DBMSTNG

I fantasize about it being BIG!
Founding Member
Apr 23, 2002
2,120
0
56
not quite here
Jun 19, 2004
#5
  • Jun 19, 2004
  • #5
you can gain .2-.3 but if you can't get the power to the ground, you'll actually go slower. alot of people have done it. i suggest working on the rear suspension first, then at a later time get the gears. that way you can get the most out of the gears.
 

edcar01gt

New Member
Jan 6, 2003
327
0
0
san antonio, tx
Jun 19, 2004
#6
  • Jun 19, 2004
  • #6
i think w/o them i'd probaly be about .5 secs slower.
 
D

doveman

New Member
Apr 26, 2004
34
0
0
Jun 19, 2004
#7
  • Jun 19, 2004
  • #7
launching is the worst part. i usually launch at 2000 and slip ever so slightly with a hint of wheel spin.
 
T

TARZAN

New Member
Apr 25, 2003
446
0
0
Philly MS
Jun 19, 2004
#8
  • Jun 19, 2004
  • #8
Its all about the driver. I cut 1.9's on $80 kumho's with 4.10's and a stall. Its not impossible, just takes practice.

DON'T FEAR THE GEAR!!!!

-Will
 

69fb00GT

New Member
May 26, 2004
117
0
0
Southwestern PA
Jun 19, 2004
#9
  • Jun 19, 2004
  • #9
How much do you think my fuel mileage will suffer on the highway?
 

Dark Knight GT

I can't get it up......ok that didn't sound right.
May 26, 2003
3,653
2
56
Ozark, Missouri
Jun 19, 2004
#10
  • Jun 19, 2004
  • #10
I've read of guys dropping their 1/4 mile times by as much as .8 tenths by switching to 4.10's over 3.27's. However, I'm sure those people are using real sticky tires like ET slicks or BFG DR's. I'm also sure they know how to drive and hit their shifts like their suppost to and that probably takes lots of practice.
 
J

jas142

Founding Member
Feb 11, 2002
1,358
0
0
Jun 20, 2004
#11
  • Jun 20, 2004
  • #11
If you're gonna slap on 4.10s and run stock suspension and tires, you might be even slower. You'll spin.
 
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