rear end rebuild
Fleet Mechanic
Joined: Nov 2004
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From: Michigan
Fleet Mechanic
Joined: Nov 2004
Posts: 1,324
Likes: 4
From: Michigan
If you are changing gear ratios, the ring and pinion will need to be set up all over again. May be better to just swap entire axle. Is this a 4x4? If ratio is changed in rear, the front ring and pinion need to be changed as well. And maybe a new carrier if going lower than 3.73.
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Originally Posted by 17fordguy
its a two wheel drive im going to convert it to 4 wheel in the future currently running 3.55 in the rear going to gear for more torque any suggestions.
stock-3.55
33 inches-3.73-3.90
35 inches-4.10-4.56
37 inches-4.88
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Joined: Oct 2006
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From: Davis & Newcastle, CA
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Fleet Mechanic
Joined: Nov 2004
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From: Michigan
Hard to find stock 8.8 axles with 4.10s. Probably easier to rebuild and regear your current axle.
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From: Mathews Virginia
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From: The dark carnival
Yeah, check out badshoe productions for how-to info on setting up rear ends.
I don't understand what you are trying to do here. Rear ends do not make torque....thats what the motor does....that said, how is the rear end "guts" out of the Bronco going to benefit the f150 in the torque department?? All the differential gear changes will do is allow the motor to rev faster or slower depending on what gears you use. Reving faster or slower is not going to effect the amount of torque the motor will make thus what you are doing will not get the desired results. If you want torque go for a 460 or a some kind of stroker crankshaft.
Originally Posted by 17fordguy
ok thank u all i ame realy looking to do is take the guts out of a bronco rear end and put them i my f150 rear end for the torque
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From: The dark carnival
Originally Posted by 17fordguy
getting more torque at the wheels not at the motor
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From: Davis & Newcastle, CA
Correct me if I'm wrong but a better suited gear ratio for a bigger tire size is going to ALLOW the engine and drivetrain to put more torque to rear wheels, while the torque isn't actually being MADE in the differential.
While gears cannot actually MAKE torque they can correct for a change in tire size which may have hindered the amount of torque that the engine is able to put to the rear wheels... Again, correct me if I'm wrong, but that is my understanding...
While gears cannot actually MAKE torque they can correct for a change in tire size which may have hindered the amount of torque that the engine is able to put to the rear wheels... Again, correct me if I'm wrong, but that is my understanding...
Last edited by Skandocious; Sep 28, 2007 at 12:27 PM.
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If your gears are to tall you won't have any power because you will be to far out of your engines power range. While you won't "make" more torque it is somewhat like having a granny gear. By lowering the gears it will more or less start the engine off higher in it's power band. Thus more torque.