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Old 12-24-2012, 06:04 PM   #1 (permalink)
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stock trans

Does anybody know how much HP the stock tran will take?
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Old 12-24-2012, 10:23 PM   #2 (permalink)
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but seriously need some more info. like year of truck its in, 5 or 6 speed. the 6 speeds are stronger stock than the 5 speeds
2006 silverado 2500hd lly/lbz crew cab 4x4
only light tuning. egr blocked torsion bars cranked
nicktane cat filter adapter
MBRP 4 inch turbo back straight pipe
105,000 miles

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Old 12-24-2012, 10:42 PM   #3 (permalink)
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Mybad I got an 08 6 speed
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Old 12-26-2012, 03:19 PM   #4 (permalink)
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Its a matter of torque, not HP. Horsepower is torque times RPM. The trans doesn't really care what speed you make the twisting force at with the exception of heat in the clutches. Contrary to what Ford says in their commercials, torque is not power, its twisting force. It does not matter how quickly its applied which is where power differs.

All that said, the two limitations if you up the torque by more than 80-90 lb-ft in the 2006-2010 Allison are the TCC and range clutches. The latter can be addressed by a TG Jr kit. The other by running a 2011- LML torque converter.
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