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**K25alive** · 03-30-2020, 08:11 PM

I see this Tach Filter was offered on CK trucks from 75-81. I have a 76/77 gauge cluster with tach that I want to swap with my non-tach gauge cluster (into a 77 C10). Question is, must I use one of these tach filters? And if so, where is it mounted? Is it mounted to the intake manifold? I do not want to fry the tach, just had it refaced, cleaned and calibrated for a pretty penny.

03-30-2020, 08:11 PM	#1
K25alive Senior Member Join Date: Jun 2015 Location: Portland, OR Posts: 273	Tach Filter GM 14020025 I see this Tach Filter was offered on CK trucks from 75-81. I have a 76/77 gauge cluster with tach that I want to swap with my non-tach gauge cluster (into a 77 C10). Question is, must I use one of these tach filters? And if so, where is it mounted? Is it mounted to the intake manifold? I do not want to fry the tach, just had it refaced, cleaned and calibrated for a pretty penny.