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Re: 2001 K1500 vs K2500HD: Air Cleaner and ducting differences?
Just checking in - that was the engine air induction system that I designed.
Same MAF all the way through; It's the same air cleaner assembly for all engine options, with different ductwork to attach to the various throttle body locations.
The HD option (K47) was standard for the "big" engines and then optional on the smaller ones.
One final comment: the system was sized for the highest engine airflow combinations (ie, 1" Hg restriction from ambient air intake to the throttle body opening, at max flow of 272 g/s) so the system greatly overachieves from a flow perspective for the smaller cubic inch displacements.
The basic system is still in use today.
K
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