3:73 gear questions - Ford Mustang Forum
 
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post #1 of 8 (permalink) Old 11-06-2012 Thread Starter
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3:73 gear questions

I decided to go with a set of 3:73 gears for my 07 GT with auto and Detroit Rocker cams. I have been reading up on the different manufacturers out there and my installer prefers Richmond gears over the FRPP's, which I prefer. Reading on some of the forums about gear whine has me concerned somewhat. Some report whine with the FRPP gears while others report whine with the Richmond gears. I have also heard that Motive is now supplying the FRPP gears. My installer is not a fan of the Motive gears.

So, what are your opinions on this issue? Preferences, experience, pros and cons, etc. My decision to go with the 3:73's are firm. Your opinions have helped me make decisions before so I look forward to them.


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post #2 of 8 (permalink) Old 11-06-2012
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I have the Ford gears...quiet as stock...if they whine they are not setup properly

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post #3 of 8 (permalink) Old 11-06-2012
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I got the FRPP's and I got some whine to go with them . . . I guess I need to get back to the installer to ask them to fix it

| 2010 GT coupe | Daily Driver with some Steeda and GT500 take-off stuff for the occasional track day
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post #4 of 8 (permalink) Old 11-06-2012
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i had my frpp gears installed by someone who builds pro-quality competition rock crawlers. Quiet as a mouse....except the KOOKs long tubes.. :-P

2010 Mustang GT, FRPP 3:73.1 gears, Paxton NOVI 2200 H.O. supercharger, SCT brenspeed tune, KOOKS LT headers, catted H pipe, SSS axleback exhaust, Comp Cams Detroit RoCkErS, brenspeed grind, DuPont SuperJetBlack re-spray w/ ChromaPremier clear, blocked down and buffed out, no orange peel! and a 3m clear bra.. It sounds like my Ducati 996 now. :-P
BHP? Lots, I guess...
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post #5 of 8 (permalink) Old 11-06-2012
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stick with the ford gears and an experienced installer. Then should not whine at all. Make sure you get the friction modifier added

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FRPP CAI with StangHi tunes | Kooks LT's | FR500 axle back | Steeda Sport springs | Koni STR.t struts/shocks | J&M camber plates | UMI adj. panhard bar | LCA relocation brackets | GT500 LCA's | Hurst Billet shifter | 3.73 gear | FRPP axle girdle | Baer Rotors and Pads
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post #6 of 8 (permalink) Old 11-07-2012
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I've got Ford 4.10 gears and they don't whine. Professionally installed by a drag racer who has a shop in my city.

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post #7 of 8 (permalink) Old 11-07-2012
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I have the Ford 3:73s in my 91 and no whine at all. Got 4:10s in my 07 auto and there is a bit of whine at 50-60 mph range. Not extremly noticeable. Thinking about 4:56s in my 10' GT auto.

2012 Mustang GT Grabber Blue 6spd (Current)
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post #8 of 8 (permalink) Old 11-08-2012
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FRPP 4:10 gears for me since day one and absolutely no Whine

2007 Black on Black, GT 6 Speed
B326 (5.3L) Built Stroker,FRPP CNC PORTED Heads,Kooks LT's,Hi-Flow Catted H,Aluminum Drive Shaft,4:10 Gears,Tokico, Eibach Pro,Nitto 555R,,UCA/LCA, ,HotRod Cams,FRPP 62mm TB,Whipple HO-Intercooled SC,GT-500 Dual Fuel Pumps,Steeda-Whipple 10 Rib Belt Drive System,15 psi, Mcleod RXT Twin Disc Clutch, Moroso 7qt oil pan. Tremec T56 Magnum XL 6 Speed
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