Brand new FRPP 3.73's have broken teeth! Need advice!!

mixedbreed02gt

Banned

Oct 6, 2007

0

0

0

Nashville, TN

Jul 22, 2008

#1

• Jul 22, 2008

• #1

had my FRPP 3.73 racing gears put in on May 17th, this past Friday, my rearend went out. mechanic pulled the diff cover off, and there were broken teeth on the brand new ring gear.

this was a brand new ring gear and pinion from FRPP, and we used a brand new motive bearing kit, with Purple Royal 75W-30 gear oil. I bought the entire kit from AmericanMuscle.com

need a good recommendation on a better gear.

I was looking for Dana 3.73's, but everywhere I've called says they don't make them????

So I was wondering what do the pro's use when running upwards of 1000+ hp to handle the power?

are Richmond Gears any good?????

I don't want cheap FRPP parts again, I want the good stuff, so I know it won't break again.

The gears were also installed by my mechanic who is Ford Master Certified and has done many gear install jobs, and he said this wasn't an install error, and it wasn't from driver abuse.

 

03ghoststang

Well-Known Member

Jul 16, 2005

1,930

1

57

Los Angeles, California

Jul 22, 2008

#2

• Jul 22, 2008

• #2

thats weird but you might have gotten a bad set of gears on all the gear swaps ive done i used FFRP gears never had a problem

 

mixedbreed02gt

Banned

Oct 6, 2007

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Nashville, TN

Jul 22, 2008

#3

• Jul 22, 2008

• #3

couple racer buddies of mine back home recommended Precision Gear 3.73's, they said it's what the "Big Boys" use when they run 750+. he said they will work on mine though, just said that they are rated for like 1500+ HP.

 

Flghtmstr1

Member

Mar 31, 2005

572

4

19

Springfield, PA

Jul 22, 2008

#4

• Jul 22, 2008

• #4

Everything I've ever heard about gears indicates that FRPP gears are the "good stuff". They are heat treated, and supposedly significantly stronger than other brands such as Motive, Richmond, etc. I don't know anything other than what I've heard from others, so take it with a grain of salt.

 

CobraRed_96_GT

Active Member

May 20, 2006

1,421

4

39

UCSD/La Jolla

Jul 22, 2008

#5

• Jul 22, 2008

• #5

I don't see how it could not be the install. I've never heard of FRPP gears whining properly installed much less breaking

 

MyBloodRunsBlue

New Member

Feb 1, 2007

127

0

0

Jul 22, 2008

#6

• Jul 22, 2008

• #6

yea so far so good on my FRPP 4.10 gears

 

Tim2002GT

Founding Member

Apr 10, 2002

635

4

29

Tulsa, Oklahoma

Jul 22, 2008

#7

• Jul 22, 2008

• #7

I have never heard of anyone having trouble with the FRPP gearsets either. Sounds like an install issue to me. There are quite a few high hp cars around here still using the 8.8 rear with Ford Racing gears and they don't even have problems. By high hp, I mean 5-600 hp cars.

 

8

89lxsport50

10 Year Member

Feb 25, 2003

550

5

39

Franklin Tennessee

Jul 22, 2008

#8

• Jul 22, 2008

• #8

They must have started making them in China.

 

bobc83

Member

Jul 31, 2007

130

0

16

Normal,IL

Jul 22, 2008

#9

• Jul 22, 2008

• #9

I really like the Motive Performance Plus series gear. Light wieght and really hold up to alot of "hey lets see what this thing can do" kinda friends. But as for the FRPP gears, I would think several things could be the result of their failure, but I've never seen a problem out of them when set up correctly. Can you return them as a manufacturer defect?

 

mixedbreed02gt

Banned

Oct 6, 2007

0

0

0

Nashville, TN

Jul 22, 2008

#10

• Jul 22, 2008

• #10

well the knuckleheads over at Precision Gear don't even have the 3.73's in stock, so I cancelled the order, and just got off the phone with Blue Oval Industries, and they are sending me another set of FRPP 3.73's, and shipping them out 2 day.

 

SRT Handz

I tripped & fell down and cut myself & got blood

Oct 10, 2004

941

23

19

La Mirada, CA

Jul 23, 2008

#11

• Jul 23, 2008

• #11

Nothing is wrong with your gears....who ever installed them F'd up big time.

FRPP gears are the best. Motive makes FRPP Gears and the FRPP Gears and Motive gears are exactly the same.

FRPP gears are OEM Goods.... everyone who runs them doesnt have a problem. I have FRPP 3.73 and my Stock Diff went out and the gears were still 100% perfect.

The person who installed your gears ******* up so slap him in the face.

 

mazen189

Member

Jul 31, 2007

424

0

16

I.E. southern california

Jul 23, 2008

#12

• Jul 23, 2008

• #12

have had my frpp 3.73's for over 2 years on my 98 and no problems.

 

rabidscoobie

10 Year Member

Jun 21, 2007

616

12

48

College Station,TX

Jul 23, 2008

#13

• Jul 23, 2008

• #13

Sorry to go off subject here,but mixedbreed i love how your car looks in your sig....that just looks awesome...

 

xporter

Member

Apr 9, 2002

34

2

6

Florida

Jul 23, 2008

#14

• Jul 23, 2008

• #14

I usually just get OEM Ford gears from the dealership(a buddy of mine work there). I've never had a problem with them. I think you can get up to 4:10's.

 

flstang65

10 Year Member

Dec 6, 2007

1,484

135

94

SE Georgia

Jul 23, 2008

#15

• Jul 23, 2008

• #15

SRT Handz said:

Nothing is wrong with your gears....who ever installed them F'd up big time.

FRPP gears are the best. Motive makes FRPP Gears and the FRPP Gears and Motive gears are exactly the same.

FRPP gears are OEM Goods.... everyone who runs them doesnt have a problem. I have FRPP 3.73 and my Stock Diff went out and the gears were still 100% perfect.

The person who installed your gears ******* up so slap him in the face.

Click to expand...

+1000000000000000000000
Just don't take them back to the same people.

 

04YELLOWGT

Active Member

Jun 29, 2005

1,135

2

39

Indiana

Jul 23, 2008

#16

• Jul 23, 2008

• #16

xporter said:

I usually just get OEM Ford gears from the dealership(a buddy of mine work there). I've never had a problem with them. I think you can get up to 4:10's.

Click to expand...

They sell 4.30s too.


+1 on ****ty install. I have had 3 sets of FRPPs in my car and never had a problem with one.

 

Mossberg

Active Member

Jul 21, 2003

0

1

36

ATL, Shawty

Jul 23, 2008

#17

• Jul 23, 2008

• #17

No probs here with FRPP for 3 years and counting.

 

mixedbreed02gt

Banned

Oct 6, 2007

0

0

0

Nashville, TN

Jul 28, 2008

#18

• Jul 28, 2008

• #18

unfortunately for me, it's not FRPP's faulty gears, and wasn't my mechanics faulty installation. should a put a new differential in from the start.

well my mechanic was pulling the gears and traction-lok out today, and the tracktion-lok was locked up, and caused 3 of the bolts that hold the ring gear to the traction-lok to vibrate loose, which is the reason the teeth on the gears were missing. so I need a new traktion-lok, but I have no idea what to get. might as well beef it up, and make it worth my while.

so I need to know what do I get? (please provide a link if you can).

thanks in advance

 

Black_02_GT

Member

Mar 2, 2008

0

0

16

Mississippi

Jul 28, 2008

#19

• Jul 28, 2008

• #19

31 spline eaton diff with moser axles...

 

SRT Handz

I tripped & fell down and cut myself & got blood

Oct 10, 2004

941

23

19

La Mirada, CA

Jul 28, 2008

#20

• Jul 28, 2008

• #20

My trac-lock started to go out but i caught the issue before any BS started to occur.

Instead of buying a new T-Lok, i bought a Auburn HD LSD and i have been 100% satisfied on the how the car drives since.