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01-19-2021, 11:16 PM | #26 | |
Registered User
Join Date: Apr 2019
Location: college station
Posts: 18
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Re: Need Some Rearend help/info
Quote:
I can kind of see the point but for some that just need a specific part to get things back in order, that ends up not being true for DIY'er. Guess If im going to replace the diff then I'll just upgrade the rear to a 31 spline mainly cause aftermarket parts are more plentiful for the 31 spline 8.8 after all my research. I dont get why Ford went kinda weird on the Mach. Couple yrs back I couldnt get an alternator anywhere. Ford dealer,Napa, and another place ordered me a new one and it would not fit, none had the shaker mount holes on them. All ford did was get a Cobra one, didnt work,holes didnt line up. Just had original rebuilt nearby been good since. |
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01-20-2021, 01:27 AM | #27 |
Soldier for Christ
Join Date: May 2009
Location: Willis, TX at The Daddy ASh Ranch
Posts: 30,596
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Re: Need Some Rearend help/info
yea that is crazy.
Honestly if you can swing it get the built one. on my 04 I did the Cobra diff and 31 spline, but kept stock gears. my 03 came with the rear built with 4.10s, it is a whole other animal on the street. ASh
__________________
2001 lazer red v6 Mustang coupe sold in Aug 2006 2004 screaming yellow 5.0 sc Mach 1 sold in Oct 2012 2013 grey 6 speed coupe GT Mustang Sold in Feb 2014 2013 RED Dodge Charger R/T Sold Nov 2014 2002 custom Blue 02 Auto Trans AM Sold June 2015 1998 Cobra Black Sold summer 2016 Current 2009 Ford F350 FX4 March 2017 (work truck) 2003 OW 5.0 Mach 1 Aug 2020 ASh |
01-20-2021, 02:44 AM | #28 | |
Registered User
Join Date: Apr 2019
Location: college station
Posts: 18
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Re: Need Some Rearend help/info
Quote:
Get car back and 2 months later bad sounds in rear, ford said whoever I had do work on the rear installed it wrong and it somehow trashed the whole rear....lol. I told them they did the work...lol. But get this. I get the car back after the new rear was done,kept driving around and getting passed by everyone. My speedo was 10 mph off. Told Ford they put wrong gears in, fix my speedo. They wouldnt without proof but wanted to charge me $100 to open rearend and look...NOPE. Showed them proof that they somehow installed 4.10's.. So free 4.10's and then they paid for the FRPP Speed-Cal box...lol Same Ford dealer that ruined 2 engines in my dads truck over a 2 week period, no joke. 1st motor they left a tool somewhere between the tranny and motor and it knocked a hole in the block.Week later a new motor and they cracked the block near the head. So motor 3 was the charm...lol |
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01-20-2021, 10:11 AM | #29 |
Soldier for Christ
Join Date: May 2009
Location: Willis, TX at The Daddy ASh Ranch
Posts: 30,596
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Re: Need Some Rearend help/info
I think I would try a different Ford dealership, lol.
I'm in Willis and a big Ford dealership a few exits up, I will not use them for service type stuff. I drive all the way to Huntsville to have all work done. 4.10s are fun, but not, depends which way i'm driving. I think I would like 3.73. For sure don't like 4.10s on the hwy while cruising. ASh
__________________
2001 lazer red v6 Mustang coupe sold in Aug 2006 2004 screaming yellow 5.0 sc Mach 1 sold in Oct 2012 2013 grey 6 speed coupe GT Mustang Sold in Feb 2014 2013 RED Dodge Charger R/T Sold Nov 2014 2002 custom Blue 02 Auto Trans AM Sold June 2015 1998 Cobra Black Sold summer 2016 Current 2009 Ford F350 FX4 March 2017 (work truck) 2003 OW 5.0 Mach 1 Aug 2020 ASh |
01-20-2021, 12:43 PM | #30 |
Registered User
Join Date: Apr 2019
Location: college station
Posts: 18
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Re: Need Some Rearend help/info
Yeah I dont use them. I only did yrs back just cause of the warranty I got with the car.
Believe or not thats just the worst stuff they have done. Dad took same truck in that they blew the motors to get oil change and tire rotation, he got about half mile down the road and rear wheel fell off. After that he got rid of the truck, figured it was a sign...lol As for the 4.10's,when I do the diff I may drop down to 3.73's. 4.10's are fun but my gas mileage took a beating. With the 3.55's I drove to Dallas and back and averaged about 27mpg, now its more like 22 and a lot of changing gears. |
01-20-2021, 01:12 PM | #31 | |
700 HP Mach
Join Date: Nov 2003
Location: Orlando, FL
Posts: 8,384
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Re: Need Some Rearend help/info
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__________________
03 dsg mach1 - MPR built 9.5:1 motor, D1, cams, ported intake, full exhaust, magnum t56, built rear, E85 etc... '12 F150 FX2 Supercrew with Ecoboost daily beater |
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01-20-2021, 02:07 PM | #32 | |
Registered User
Join Date: Apr 2019
Location: college station
Posts: 18
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Re: Need Some Rearend help/info
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Prob gonna do the whole diff change out/upgrade next month. Got a good deal on a set of FR500 9" wheels and 275 tires from AM I couldnt pass up, just under $1000 mounted and shipped. Calling them is much cheaper than just online order, always get better deals. Discount tire quoted me $1500 for the exact same setup. Hopefully the diff dont go boom in the meantime...lol. Doubt it,like I said I wouldnt have even known if I wasnt in there doing carrier/axle bearings and seals. Its just knowing couple chipped spider teeth bugs me. |
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01-20-2021, 02:11 PM | #33 |
Registered User
Join Date: Apr 2019
Location: college station
Posts: 18
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Re: Need Some Rearend help/info
Finally figured out the profile avatar,lol kept telling me upload failed.
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01-20-2021, 06:14 PM | #34 | |
Soldier for Christ
Join Date: May 2009
Location: Willis, TX at The Daddy ASh Ranch
Posts: 30,596
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Re: Need Some Rearend help/info
Quote:
ASh
__________________
2001 lazer red v6 Mustang coupe sold in Aug 2006 2004 screaming yellow 5.0 sc Mach 1 sold in Oct 2012 2013 grey 6 speed coupe GT Mustang Sold in Feb 2014 2013 RED Dodge Charger R/T Sold Nov 2014 2002 custom Blue 02 Auto Trans AM Sold June 2015 1998 Cobra Black Sold summer 2016 Current 2009 Ford F350 FX4 March 2017 (work truck) 2003 OW 5.0 Mach 1 Aug 2020 ASh |
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02-07-2021, 05:00 PM | #35 | |
MECHANIC
Join Date: Jun 2012
Location: Morgantown, WV
Posts: 916
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Re: Need Some Rearend help/info
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The only reason any car manufacturer sales parts for more than a few years old is because they are required too by law. If memory serves they have to sell parts for 10 years after manufacture. |
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02-07-2021, 05:45 PM | #36 | |
Registered User
Join Date: Apr 2019
Location: college station
Posts: 18
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Re: Need Some Rearend help/info
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Im done with it, about to either get the Eaton Truetrac or Yukon Duragrip and be done. Sometime this month hopefully. Probably gonna replace the ring and pinion too just to have it all done and good to go. Install isnt costing me anything. Just gonna take it to my cousins speed shop in Austin and me and him get it done. |
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