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That info is correct sawtooth, except the Allisons can't handle that much power stock. I have 2 buddies with 07's and they limped their trannys on 100hp tunes. That seems to be the breaking point. So I'd say they can't handle 400+ hp. The 08+ Torqueshifts are handling 500-600 all day long. On another site they have been dynoing a truck at 680 hp on all stock parts. Even the Spartan guys have Suncoast parts waiting but they havn't destroyed their stock tranny either. This is after all their beta testing and 100's of dyno and street runs (and the infamous burn-out contest).
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2008 F-250 Lariat 4x4, 6.4L, 4 tires, brakes, windshield, windshield wipers, tailgate, bumpers, blinkers, headlights, spare tire, rear bumper, hood, antenna, driver AND passenger seats, speedometer, radio, steering wheel, & spare set of keys!
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