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1997 - 2003 Ford F150 General discussion on the Ford 1997 - 2003 F150 truck.

Engine Builders talk.

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Old Feb 11, 2016 | 06:25 PM
  #8011  
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Originally Posted by jprevat

I think dyno before and after would definitely be a good idea. That 10k price point is why I want to take a 98 long block with some mild cams, to start building torque before the 1000 rpm mark, in pi heads just to see if its even remotely close to what I want. If it is then I can spend the money to actually build the engine from new.

I really want a rear e-locker but I would do gears at that point too. Nothing about truck building is cheap. Lol
A detroit Trutrac is far more cost effective and does a great job. That's what I did anyway. Flawless operation and great traction even with 37" tires.
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Old Feb 11, 2016 | 06:39 PM
  #8012  
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Originally Posted by charliedyal
A detroit Trutrac is far more cost effective and does a great job. That's what I did anyway. Flawless operation and great traction even with 37" tires.
That's the Torsen style LSD right?
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Old Feb 11, 2016 | 07:01 PM
  #8013  
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Yes
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Old Feb 11, 2016 | 07:15 PM
  #8014  
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Originally Posted by charliedyal

A detroit Trutrac is far more cost effective and does a great job. That's what I did anyway. Flawless operation and great traction even with 37" tires.
I will definitely need to look into that. I wonder if they make one for the front diff.
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Old Feb 11, 2016 | 07:33 PM
  #8015  
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Originally Posted by jprevat
I will definitely need to look into that. I wonder if they make one for the front diff.
if your rear is an 8.8 then you should be able to use them same one for the front and rear since the direction of the gears cut doesn't affect the operation of the carrier.
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Old Feb 11, 2016 | 07:44 PM
  #8016  
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Originally Posted by jprevat
I will definitely need to look into that. I wonder if they make one for the front diff.
They do, I've looked into it. The problem with a full time locker in the front is that you will always be running 4wd making fuel mileage even more horrible than it already is.
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Old Feb 11, 2016 | 07:49 PM
  #8017  
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Originally Posted by DrillRig52
They do, I've looked into it. The problem with a full time locker in the front is that you will always be running 4wd making fuel mileage even more horrible than it already is.
it's a truck with a V8, who gets worried about fuel mileage anyways
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Old Feb 11, 2016 | 07:53 PM
  #8018  
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I would need this one for the rear. http://www.summitracing.com/parts/dtl-913a477/overview/

...and this one for the front. http://www.summitracing.com/parts/dtl-912a562/overview/
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Old Feb 11, 2016 | 08:00 PM
  #8019  
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Originally Posted by DrillRig52
They do, I've looked into it. The problem with a full time locker in the front is that you will always be running 4wd making fuel mileage even more horrible than it already is.
Even if its the torsen LS? Since it would only be connected with the driver side axle and the short axle that isnt collared to the pass side wouldnt the LS by definition power the shorter pass axle since it has the least amount of resistance?
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Old Feb 11, 2016 | 08:10 PM
  #8020  
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Originally Posted by jprevat
Even if its the torsen LS? Since it would only be connected with the driver side axle and the short axle that isnt collared to the pass side wouldnt the LS by definition power the shorter pass axle since it has the least amount of resistance?
I'm almost positive it will keep the 4x4 engaged. If you look at how a Torsen diff works, it only lets a limited amount of slip before it turns to a full on locker unlike a clutch style LSD with clutch packs. Too bad Collin doesn't come around much anymore, he has a locked front and I'm sure he could explain this much better than I.
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