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  • 2005 - 2014 S-197 Mustang -General/Talk-
  • 2005 - 2009 Specific Tech

A "sorry I got my 4:10s installed today"

  • Thread starter Thread starter 95vert354
  • Start date Start date Feb 9, 2009
9

95vert354

New Member
Mar 19, 2006
107
0
0
Feb 9, 2009
#1
  • Feb 9, 2009
  • #1
Repeat after me......."I will never install used gears in my street car"

Had my 4:10 FRPP gears that I had swapped out of my "track only" car and had been sitting on the shelf, installed in my new '09. They didn't have any noticable wear pattern or rough spots anywhere on them....they really looked good. I was going to buy new gears for it but figured why waste the money on new ones, and I could really use the money with my cold air and dyno appointment next week.

Well...It sounds like a '79 F-600 Dump truck

Before we get into the "Sounds like it wasn't installed right" replys, I can and have installed gears myself with good sucess. When I want a set done perfectly,
I drop it off at my buddys shop and have him do it. He's a perfectionist when it comes to my cars,and he's done hundreds of gear sets. He shimmed this set 3 different times trying to get rid of the noise. Above 40mph ,it has a roar on acceleration and a whine when you let off. It will prbably run 1000,000 miles without a problem,but I couldn't drive across town without gritting my teeth.
If it was a track only car, I could live with it,in fact I wouldn't hear it over the exhaust. Lucky for me he felt bad enough about it, that he said to order a new set and install kit and he would put them in for free Just ordered.

Lesson learned when it comes to gears...spend the extra money and buy new. It could of cost me double for the labor.

BTW I love the way it drives, 4:10 is just right for this car.
 

CRoberts91

Member
Jul 10, 2007
148
1
18
Northport, AL
Feb 9, 2009
#2
  • Feb 9, 2009
  • #2
sorry bout your troubles mate. thanks for telling us though. the mustang community learns from everyone's mistakes.
 

NastyStang113

New Member
Sep 12, 2008
1,567
1
0
Florida
Feb 9, 2009
#3
  • Feb 9, 2009
  • #3
Used gears are ALWAYS a bad idea, IMO. Gears create a wear pattern that is generally for each rear differential.
 
9

95vert354

New Member
Mar 19, 2006
107
0
0
Feb 9, 2009
#4
  • Feb 9, 2009
  • #4
NastyStang113 said:
Used gears are ALWAYS a bad idea, IMO. Gears create a wear pattern that is generally for each rear differential.
Click to expand...

I've swapped them around from drag car to drag car...but never again to a street car. I couldn't agree with you more.
 
2

21MsclCr

Member
Jan 27, 2009
49
0
6
Plano, Texas
Feb 10, 2009
#5
  • Feb 10, 2009
  • #5
Do you recommend the 4.10s or the 3.73s? I heard on the 05 and up 3.73s are actually a bit better but im not sure. I guess it just depends on what you do with it
 

NastyStang113

New Member
Sep 12, 2008
1,567
1
0
Florida
Feb 10, 2009
#6
  • Feb 10, 2009
  • #6
It depends on a lot of stuff .. Personally, I wouldn't run 4.10s on a car with a blower that is on the street and track. If it's a track car than there are plenty of people running 4.56s with tall slicks. I think 3.73s are perfect for a blown street car that goes to the track, too. 4.10s for N/A. 4.30s, 4.56s, 4.88s for track cars !! Than again, everyone has their opinion and no one is really right. It's just what you like in the end.
 

NotQuik

Founding Member
Oct 21, 2000
5,158
29
88
Central Florida
Feb 11, 2009
#7
  • Feb 11, 2009
  • #7
I can completely agree with nastystang on that one....maybe even a 3.55 for blower cars IMO.
 

08blueskunk

New Member
May 8, 2008
217
0
0
Maine
Feb 11, 2009
#8
  • Feb 11, 2009
  • #8
my 97 cobra had 3.73 and it was IMO the best setup over my stock 3.31 just felt more alive.
 

Emay

Member
Oct 4, 2006
228
1
18
South Elgin, IL
Feb 13, 2009
#9
  • Feb 13, 2009
  • #9
I'm currently in a set of 4.10's with my procharger, they are coming out for a set of 3.73's.

4.10's in a blown car make for a ton of tire spin on the street, even on a radial.
 

NotQuik

Founding Member
Oct 21, 2000
5,158
29
88
Central Florida
Feb 13, 2009
#10
  • Feb 13, 2009
  • #10
I just got the 4.10's installed and took a 190 mile drive back home and I like them alot so far.
 
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