• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-

Question about gears and my setup???

  • Thread starter Thread starter JH96GT
  • Start date Start date May 23, 2010

Gear Opinion

  • Don't fear the gear.....keep the 4.10's

    Votes: 3 60.0%
  • Go w/ the 3.55's....you'll like'em better.

    Votes: 2 40.0%

  • Total voters
    5

JH96GT

Founding Member
Aug 20, 2000
1,526
13
124
Twilight Zone, TN.
May 23, 2010
#1
  • May 23, 2010
  • #1
Was reading another thread and it got me curious. Tried some searches, but didn't find much.

I'm curious if going from my current 4.10 setup to 3.55's would actually improve my 1/4 - 1/8 mile times. Current mods:

306, long tubes, H-pipe, MAC Exhaust, Edelbrock upper and lower intake, flat top forged pistons, world products windsor sr. heads, 24 lb injectors, F303, CAI, 70 mm mass air, 65 mm throttle body, Mark VIII elec fan, DCC fan/temp controller, Alum. Rad, SCT chip and tune by JMS Performance. 05115 NOS Dry Kit (never used and unhooked), World Class T-5 5spd tranny, 4.10 gears, New King Cobra clutch, FMS Flywheel, subframe connectors, air bag in rear spring, etc….

Best I've ever got it on street tires is 8.80 in the 1/8 mile. It spins like craaaaazy so I have to launch it softly. I do have D/R's now, but haven't tried them yet.

Just curious about the opinions from you guys? Would you stay 4.10 or go to 3.55's w/ this setup? I don't run the car much at all, but do like the street/highway cruising. Oh, and the 13-15mpg sux w/ the 4.10's....

Thanks gang.
 

87GT Drop Top

Member
May 1, 2009
500
3
17
South Florida
May 23, 2010
#2
  • May 23, 2010
  • #2
I know nothing about drag racing, but I have 3.73's in my car. It's a T5 also. I just installed a Pro Motion T5. 1st is 2.95 instead of 3.35. 5th is .58 instead of .68. Before the new trans I wish I would have done 3.55 instead of 3.73. With the new trans it's better, but I think 3.55 would be perfect.
 

nick6690

Member
Mar 2, 2008
147
1
17
McDonough, GA
May 23, 2010
#3
  • May 23, 2010
  • #3
Keep the 4.10's, especially since you have a cam. My car pulled a lot harder with 4.10's than with 3.73's.
 

Grn92LX

Fidanza Man!
Founding Member
Jan 14, 2001
6,819
64
129
New York
May 23, 2010
#4
  • May 23, 2010
  • #4
Keep the 4.10's. Dropping to 3.55 will not gain any mpg back.
 

nick6690

Member
Mar 2, 2008
147
1
17
McDonough, GA
May 23, 2010
#5
  • May 23, 2010
  • #5
My car got better mileage with the 4.10's than the 3.73's but i drive mainly around town.
 

ill advised

Member
Apr 29, 2003
656
10
19
West L.A.
May 23, 2010
#6
  • May 23, 2010
  • #6
With your set-up I would stay with the 4.10. With a 3.55 I think it would feel a bit soggy around town. The best bet would be a stickier tire.
 

Beasty306GT

Active Member
Dec 19, 2002
671
4
28
Oxford,Mass
May 23, 2010
#7
  • May 23, 2010
  • #7
i say keep the 4.10 gears
 

tannerc91gt

This last 25% is foreign territory at this point
Founding Member
Nov 29, 1999
4,392
2,967
234
Indiana
May 23, 2010
#8
  • May 23, 2010
  • #8
JH96GT said:
Best I've ever got it on street tires is 8.80 in the 1/8 mile. It spins like craaaaazy so I have to launch it softly. I do have D/R's now, but haven't tried them yet.

Thanks gang.
Click to expand...

this is your problem, not the 4.10s. you'll regret going to 3.55s
 

JH96GT

Founding Member
Aug 20, 2000
1,526
13
124
Twilight Zone, TN.
May 23, 2010
#9
  • May 23, 2010
  • #9
Roger, roger........

Thanks guys.
 

bentley429isBAC

10 Year Member
Jul 23, 2009
922
188
84
CT
May 23, 2010
#10
  • May 23, 2010
  • #10
4.10s or 3.73/3.90s on the bottle
 
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