5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

5.0 rear

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Old 08-15-2005, 11:35 PM
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dc_mann8
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Default 5.0 rear

how strong is the 8.8 in fox bodys? how hard can i drop the clutch on my slicks? i have 3;73s, and bolt ons, im racing tomorrow in slicks for the first time, will 3500 drops hurt the rear?
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Old 08-15-2005, 11:50 PM
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primetime5.0
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Default RE: 5.0 rear

no not at all id be more worried about the torque box than the rear
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Old 08-16-2005, 12:09 AM
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Default RE: 5.0 rear

well i was thinkign id reinforce them, and put subframe connectors in, but ill have one day at the track before that.
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Old 08-16-2005, 12:14 AM
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primetime5.0
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Default RE: 5.0 rear

i hear just welding the torque box up there is all you need
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Old 08-16-2005, 01:01 AM
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Default RE: 5.0 rear

okay, this is something i really dont know much about on cars, whats a torque box, where is it exactly, and what part needs welded, im making a driveshaft loop tomorrow so ill weld the torque boxes while im at it, but i need help with this!
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Old 08-16-2005, 01:27 AM
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Default RE: 5.0 rear

torque boxes are where the control arms go. factory is only spotted so run full beads

you can dump as high as 5k if yo uwanted to. the weak spot in the rear is the clutches or the axles.

in the pic you can see my box has been reinforced. i need to do my uppers also you can see my ds loop
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Old 08-16-2005, 01:31 AM
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Default RE: 5.0 rear

thanks for the info and pictures quik, so i should have no worries droppin at 3500??? i just rebuilt with new stock clutches in the rear, and axles with new seals.
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Old 08-16-2005, 01:35 AM
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Default RE: 5.0 rear

with your stock motor i wouldnt worry about breaking an axle unless it has a bad worn spot to it. 3500 shouldnt be a problem. make sure to have subframes if not youll get some twistage
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Old 08-16-2005, 01:38 AM
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dc_mann8
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Default RE: 5.0 rear

well i dont have subframes...yet. will one day at the track twist it much??? subfreams will be in soon.


also, 3500 should be lots high launch right? i shoudlnyt bog with that high?
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Old 08-16-2005, 01:43 AM
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Default RE: 5.0 rear

you can still spin at 3500 or bog. chances are your not going to hook that well with stock suspension and no stiffening. so everything but the tires will take a beating. it will stick but youll lose some momentum without suspension and stiffening. youll probably see a 1.9 to 2.1 with Et streets and totall ystock supsension. a buddy see those times with his and stock suspension.

it shoudl be ok but i wouldnt do it agai nwithout them. just keep and eye on the quarter window pillar. check it now then check it after the track. if you see dimples after the track then you just twisted some. also look at the gap around the hatch very well. then after the track check it again. if its a little off then you twisted some.

run about 15psi in the tires and about 42 or 45 in the front tires.
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