qwk08snk Posted April 17, 2011 Report Share Posted April 17, 2011 08 shelby gt500 is in dealers having 373 Ford Racing Gears installed, I haven"t taken it home yet but the mechanic says the whining is unacceptable. Took a spin with him at 60-65 mph and he's got that right.He's had it apart twice checking everything, only thing he can't get correct is the pattern .He's going after that tomorrow. so here's hoping. It seems to be a common problem on GT500's. I have BMR adjustable uca and bracket/lca and adjustable panhard bar. I'm thinking the pinion angle is wrong but don"t want to P/O the guy by opening my mouth as I'm not a mechanic and he is. Anybody go thru the same deal and end up with a happy ending? A little noise I can handle but this is way past noise. I am reading that there are a lot of NFG Ford gear sets around. If these arer no good I hope they make good and replace them at their cost as the car hasn't even left the shop yet. They say they'll figure it out one way or the other so here's hoping. Any advice appreciated. Link to comment Share on other sites More sharing options...
shel-b001 Posted April 17, 2011 Report Share Posted April 17, 2011 08 shelby gt500 is in dealers having 373 Ford Racing Gears installed, I haven"t taken it home yet but the mechanic says the whining is unacceptable. Took a spin with him at 60-65 mph and he's got that right.He's had it apart twice checking everything, only thing he can't get correct is the pattern .He's going after that tomorrow. so here's hoping. It seems to be a common problem on GT500's. I have BMR adjustable uca and bracket/lca and adjustable panhard bar. I'm thinking the pinion angle is wrong but don"t want to P/O the guy by opening my mouth as I'm not a mechanic and he is. Anybody go thru the same deal and end up with a happy ending? A little noise I can handle but this is way past noise. I am reading that there are a lot of NFG Ford gear sets around. If these arer no good I hope they make good and replace them at their cost as the car hasn't even left the shop yet. They say they'll figure it out one way or the other so here's hoping. Any advice appreciated. Why don`t you ask thjem to check your pinion angle or was that done when you added the UCA< that could be your problem. Link to comment Share on other sites More sharing options...
SteelTownStang Posted April 17, 2011 Report Share Posted April 17, 2011 I don't think that the pinion angle is the issue... Link to comment Share on other sites More sharing options...
cluscher Posted April 18, 2011 Report Share Posted April 18, 2011 Make sure backlash is set around .008. Link to comment Share on other sites More sharing options...
Tob Posted April 19, 2011 Report Share Posted April 19, 2011 So how much did you pay for the gears and installation? Link to comment Share on other sites More sharing options...
qwk08snk Posted April 19, 2011 Author Report Share Posted April 19, 2011 gears were 150 and installation 450 all in. Dealer is going to install new set of gears now and looks like warranty will pick up the tab. I just want my car back with no loud whine.stay tuned...hasn't moved from dealers in a week good thing its raining....lol Link to comment Share on other sites More sharing options...
qwk08snk Posted May 7, 2011 Author Report Share Posted May 7, 2011 08 shelby gt500 is in dealers having 373 Ford Racing Gears installed, I haven"t taken it home yet but the mechanic says the whining is unacceptable. Took a spin with him at 60-65 mph and he's got that right.He's had it apart twice checking everything, only thing he can't get correct is the pattern .He's going after that tomorrow. so here's hoping. It seems to be a common problem on GT500's. I have BMR adjustable uca and bracket/lca and adjustable panhard bar. I'm thinking the pinion angle is wrong but don"t want to P/O the guy by opening my mouth as I'm not a mechanic and he is. Anybody go thru the same deal and end up with a happy ending? A little noise I can handle but this is way past noise. I am reading that there are a lot of NFG Ford gear sets around. If these arer no good I hope they make good and replace them at their cost as the car hasn't even left the shop yet. They say they'll figure it out one way or the other so here's hoping. Any advice appreciated. well car is still at dealers, noise is off the scale. tech says gears nfg, Ford racing say too bad no warranty. I havent even taken the car home yet. Has anyone had any dealings with warranty on Ford racing parts? I emailed Ford racing for help but that went unanswered. I am past frustrated. Link to comment Share on other sites More sharing options...
qwk08snk Posted May 11, 2011 Author Report Share Posted May 11, 2011 well car is still at dealers, noise is off the scale. tech says gears nfg, Ford racing say too bad no warranty. I havent even taken the car home yet. Has anyone had any dealings with warranty on Ford racing parts? I emailed Ford racing for help but that went unanswered. I am past frustrated. and the plot continues. I have given up so has dealer. Downloaded ford racing specs for 373 rear end and mechanic set to those specs. Noise was worse than ever. Called ford racing and asked for help.Dealer mechanic says gears are nfg. Ford racing says send them to us for inspection That is really wonderful, I'm sure that won't take longer than 6 months. I am out the money I spent for the gears and the dealer is out money for installation all for a crummy few humdred dollars. they sure know how to p** people off. I don't understand how they can sell defective parts and then tell the customer "too bad"...I will wait and see what happens but you know where this will go...I am a true blue ford guy but boy they sure make it hard...stay tuned.. Link to comment Share on other sites More sharing options...
SteelTownStang Posted May 11, 2011 Report Share Posted May 11, 2011 It’s unfortunate that your problems persist. If the dealership knew that there was a problem, then why didn’t they just throw another set in there? The actual gears are relatively inexpensive. It’s the labor that is costly… I recently purchased a set of FRPP 3.73 gears from Summit and had a local guy install them… whisper quiet with no issues. It seems that there have more complaints recently regarding gear swaps. I still think that 99% of the problems are related to the install and not the actual gears. Good luck and I hope that you get the matter resolved. Link to comment Share on other sites More sharing options...
2010KonaBlueGT Posted May 12, 2011 Report Share Posted May 12, 2011 08 shelby gt500...<snip> the mechanic says the whining is unacceptable. Took a spin with him at 60-65 mph and he's got that right.He's had it apart twice checking everything, only thing he can't get correct is the pattern Did he say what kind of pattern he's seeing? Give me that info and I may be able to send you some tips/pointers to give to your tech. Phill (ASE Master Certified Tech) Link to comment Share on other sites More sharing options...
07SGT5687 Posted May 12, 2011 Report Share Posted May 12, 2011 I still think that 99% of the problems are related to the install and not the actual gears. Good luck and I hope that you get the matter resolved. +1, I had 4.10s installed on my 05 GT a couple years back and stressed the crap out of myself (not thats not a new development) trying to decide where to have them done since EVERYONE told me that a less than METICULOUS install will cause moderate to severe whining. Asked around for a long time and finally found a guy that knew what he was going. Did it once and no whine. Also FRPP gears. Quick question, did you provide the parts? Or did the dealership order them for you? If you supplied them, I'd just tell them you want it back to stock, you're not paying for a failed install, and take your gears and start over with a new installer that knows what they are talking about. If THEY supplied the gears, I'd tell them FAIL and you want your stock car back and you're not paying a dime... THEN go find the guy that knows how to do this. Just my $0.02 Link to comment Share on other sites More sharing options...
SSGT500 Posted May 13, 2011 Report Share Posted May 13, 2011 I put FRPP 3.73 gears in my GT500 several years ago and they are noisier than I think they should be. I'll use a different brand next time. Link to comment Share on other sites More sharing options...
07SGT5687 Posted May 13, 2011 Report Share Posted May 13, 2011 I put FRPP 3.73 gears in my GT500 several years ago and they are noisier than I think they should be. I'll use a different brand next time. I think you'll be disappointed either way if you have the same person install them. I'm told FRPP gears are as good as it gets for our cars, IF they are installed correctly. But that's just my experience and opinion of course. Link to comment Share on other sites More sharing options...
lawdude Posted May 13, 2011 Report Share Posted May 13, 2011 OEM gears began whining a month or so after I bought my new GT500. Had 4.10s put in awhile back. After a couple of months, they started whining too. Rear axle on my Ford Explorer whines. I have bigger things to worry about than whining rear axles on Fords. Link to comment Share on other sites More sharing options...
leadfoot 5.4 Posted May 13, 2012 Report Share Posted May 13, 2012 I had the same problem too when I stuffed 4:10 in the rear..it had something to do with the bearing.... Link to comment Share on other sites More sharing options...
Kevin Patten Posted May 13, 2012 Report Share Posted May 13, 2012 I see that this topic has been brought back so I thought that I would throw in my .02 worth. 95% of the time when there is a problem with a rearend gear swap it is DUE TO AN ERROR on the installers behalf. I.E. did not replace the bearings(which should always be done) , did not set the pattern correctly on both the drive and coast side , did not set the pinion depth correctly , DID NOT KNOW THE DIFFERENCE BETWEEN A HUNTING VS A NON-HUNTING Gear Set , did NOT understand gear patterns ( heel/toe ) and lastly but not too often setting the correct ammount of backlash . 3-4% of the time is DUE TO IMPROPER BREAK-IN PROCEDURE and/or IMPROPER FLUID TYPE, then there is the remaining 1-2% of the time when there is an actual problem with the gear set .(i.e. ring gear runout , uneven or improper hardening process). I have seen too many techs try to cut corners or give up on getting the patterns correct and then blame the gear set both in the classroom (as a teacher) and in the field (as an ASE Certified Technician). Again my .02 Link to comment Share on other sites More sharing options...
Ray Lucca Posted May 16, 2012 Report Share Posted May 16, 2012 Very well put Albino... I have been thinking about having the 3.73 Frpp gears installed in my 09 Vert. I keep hesitating because of all of the horror stories like above..... Link to comment Share on other sites More sharing options...
2010KonaBlueGT Posted May 16, 2012 Report Share Posted May 16, 2012 I have seen too many techs try to cut corners or give up on getting the patterns correct and then blame the gear set both in the classroom (as a teacher) and in the field (as an ASE Certified Technician). Again my .02 Blackout is having a whine issue with the 4.10 install in his 2012 Super Snake and I told him the same thing. I've had gear sets out as many as 4 times before I was satisfied with the install and I believe that's what his problem is, a Tech (actually, two of them now/same dealership) that doesn't want to repeat the job multiple times and just blames the gear as a bad set rather than take blame himself. I've offered to inspect the gears to see if I can spot a problem but I'm not holding my breath (on finding a problem). The first install ended with a ratcheting noise but no whine. The second install had a whine and now he's reporting a ractheting noise. The first Tech reinstalled his Shelby 3.73 gears and they WHINED! No whine with it from Shelby, but a whine when the 1st Tech reinstalled which tells me the Tech doesn't know what he's doing (obvious by the first failed attempt at a install). I totally agree with you that in MOST cases it will be a inept Tech, not a bad gear set. I've installed HUNDREDS of gears and have never ever EVER had a bad gear set. I've had them whine which resulted in me pulling it back down and resetting something (pinion bearing pre-load, pinion depth, back-lash, carrier bearing pre-load, etc. etc. etc. On a side note, I see you're a CA Pacific Coast resident that was/is in the field and taught Auto Tech. Me too.. I'm also a ASE Master Tech + L-1/Advanced Level + Alternate Fuels + AC R&R, etc., a GM certified (Master) Delco-Tech, and a Certified Instructor with California BAR for the CACC/Smog Course. I taught EMD 1-5 at a Private Post-secondary school for a few years before retiring due to a bad back injury. I taught up in Fremont CA, worked in Monterey, Pacific Grove and Salinas CA for most of my adult life so I'm wondering if by some slim chance we worked at the same school. It was Sequioa Institute when I worked there, now it's Wyo Tech (i.e. Carinthian Colleges). Just curious, Phill Pollard Link to comment Share on other sites More sharing options...
Kevin Patten Posted May 16, 2012 Report Share Posted May 16, 2012 Phill - PM sent Link to comment Share on other sites More sharing options...
hunters1 Posted November 3, 2013 Report Share Posted November 3, 2013 Took a while to find a reputable speed shop in Panhandle of Florida. For those in this area I highly recommend XXX Motorsports in Pensacola. Had gear swap to 3.73's done last week. No whine no issues what so ever. Great shop! Link to comment Share on other sites More sharing options...
Kevin Patten Posted November 4, 2013 Report Share Posted November 4, 2013 Good to hear for the guys in the South Atlantic area . Hope that you like the 3.73s . Link to comment Share on other sites More sharing options...
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