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08-04-2010, 02:13 AM
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Registered User
 
Join Date: Mar 2010
Location: Rocky Mount, NC
Posts: 224
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28 or 31 Axles for me?
My 03 automatic is my DD with just a few passes a year and has minor bolt ons and 4.10's. With that in mind and no power adder or 3600 stall in sight, do I need to upgrade to 31 spline axles and differential? or will my stock track lock and maybe some stronger 28 spline axles be fine for launching at 1000-2000 rpms with ET Streets?
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2003 Automatic Torch Red 28,000 miles Mods... Borla Stinger Catback Magnaflow O/R X Pipe Drop in K&N Silencer delete UD Pulleys SCT 93 Octane Tune AFS 17x9/10.5 275/35/17 NT555 315/35/17NT555r H&R SS Springs Stock Isolators MM C/C Plates MM XD Non Adj LCA Shorty Antenna 20% Tint 03/04 Cobra Mirrors Avic X930BT DDIN 2009 Harley Davidson Sportster 1200C -Samson Rip saw pipes -Kuryakyn Grips/pegs -Detachable Windshield -Low Sissy bar |
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08-04-2010, 03:03 AM
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#2 |
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PSR Mafia
 
Join Date: May 2007
Location: Gilbert, AZ
Posts: 2,011
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Re: 28 or 31 Axles for me?
I wouldn't bother with the 31s honestly at this point. If it was a stick car I might suggest otherwise.
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2010 Triumph Daytona 675 2003 Mach 1 - Azure Blue 5 speed Mostly stock...except for a few goodies 
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08-04-2010, 09:29 AM
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#3 |
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LuLz
Join Date: Dec 2003
Location: Cedar Park, TX
Posts: 19,294
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Re: 28 or 31 Axles for me?
moser 28 spline axles and a rebuild of the t-lok and call it a day
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11 Sterling gray GT500 coupe 08 Silver Z06 1058rwhp/1073rwt @ 15psi  14 Silver Q50S Vortech blown 04 DSG Mach 1 (stolen) 03 OW Mach 1 (sitting in a field rotting away) |
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08-04-2010, 01:00 PM
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#4 |
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Registered User
Join Date: Mar 2010
Location: Rocky Mount, NC
Posts: 224
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Re: 28 or 31 Axles for me?
Ok thanks. 28 spline it is then.
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2003 Automatic Torch Red 28,000 miles Mods... Borla Stinger Catback Magnaflow O/R X Pipe Drop in K&N Silencer delete UD Pulleys SCT 93 Octane Tune AFS 17x9/10.5 275/35/17 NT555 315/35/17NT555r H&R SS Springs Stock Isolators MM C/C Plates MM XD Non Adj LCA Shorty Antenna 20% Tint 03/04 Cobra Mirrors Avic X930BT DDIN 2009 Harley Davidson Sportster 1200C -Samson Rip saw pipes -Kuryakyn Grips/pegs -Detachable Windshield -Low Sissy bar |
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08-04-2010, 05:40 PM
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#5 |
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Mach1 member
Join Date: Aug 2003
Location: East Haven, CT
Posts: 3,349
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Re: 28 or 31 Axles for me?
You should be fine with 28 spline.
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2011 Mustang GT Grabber Blue Automatic 2003 Mach 1 Whipple 2.3 718 rwhp 735 rwtq @25 psi SOLD |
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08-05-2010, 12:32 AM
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saving pennies
 
Join Date: Apr 2008
Location: Griffin, Ga
Posts: 1,487
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Re: 28 or 31 Axles for me?
Since its along the same lines I'll ask it. Would a full bolt on car with 4.10's and something like a 4000 stall still be ok with 28 splines or would it be better to go ahead and step up to 31's?
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03 Mach 1--Auto, 4000 stall, 96 cobra intake cams, 4.10s, ARH L/T's, off road X, Moser 31 spline axles, Eaton Posi diff., MM FLSFC, Tokico D-Specs, k&n filter, 17x9/10.5s AFS Mac wheels 03 Cobra--18x9/10.5 TSW Nurburgring Wheels, Nitto NT05's 275/295, Stiegemeier ported, 2.87” pulley, Canton 9-qt oil pan, Spec Stage II clutch, MM coilovers, Bilstein Shocks/Struts, LFP heat exchanger, LFP radiator, Evans cooling system, 14" Brembo 4 Piston calipers, 470whp, 460ft-lbs |
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