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Layne · 01-27-2015, 07:55 PM

I have a '68 C20
It does not have the tach or vaccume gauge.
I'd like to have a tach for obvious reasons. What is the vaccume gauge used for?

01-27-2015, 07:55 PM	#1
Layne Registered User Join Date: Nov 2014 Location: Gonzales, Louisiana 70737 Posts: 263	Gauge cluster I have a '68 C20 It does not have the tach or vaccume gauge. I'd like to have a tach for obvious reasons. What is the vaccume gauge used for?