8-Lug Truck Performance Duramax, 8.1L, and HD tech | Intakes | Exhaust | Tuning | Suspension | Drivetrain

Airbox question

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Old Sep 16, 2011 | 08:35 PM
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dick_landy's Avatar
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Default Airbox question

Does anyone with a duramax have an airbox like the one in the picture? I want to know the diameter is where the tube connects. Thanks

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Old Sep 17, 2011 | 02:28 AM
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4 and some inch?

Lol or get a piece of string, put it around and measure how much string you used from tip to tip with a ruler
then its all middle school from there

Last edited by kr1s; Sep 17, 2011 at 02:41 AM.
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Old Sep 17, 2011 | 05:44 AM
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I do believe its 4'', but i need to measure to be sure.

It's straight thru piping though, no restrictions inside, i see what your thinking and would like to see your results if you try it.
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Old Sep 17, 2011 | 09:10 AM
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Originally Posted by TIM Z
I do believe its 4'', but i need to measure to be sure.

It's straight thru piping though, no restrictions inside, i see what your thinking and would like to see your results if you try it.
Im thinking swapping out my airbox for a duramax one if its bigger than my gas one. I have a K&N kit from before I put the blower on but I like the idea of keeping a stock appearance. Im sure my blower would like access to more air!
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Old Sep 24, 2011 | 05:47 PM
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It is indeed 4". Im looking for one if anyone has one.
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