The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Picture request - factory vac gauge connections to the back of the dash

**jocko** · 02-06-2014, 09:58 PM

thanks very much guys - that's exactly what I needed. Are the connections for the hard line just regular old NPT at the gauge end? LMC sells a kit that I THINK allows soft line to be used and a barb that screws into the back of the gauge (but it just uses ww washer hose as the vac line, I may need a thicker wall vac hose to avoid fluctuation/poor readings - very good to hear that Coley's setup works well). All things being equal, I'll have all the parts for a soft-line approach, if I see any problems, I may upgrade to the hard line. Thanks again, really appreciate the quick response and the great pics!

02-06-2014, 09:58 PM	#5
jocko Senior Member Join Date: Oct 2009 Location: Godley, TX Posts: 17,934	Re: Picture request - factory vac gauge connections to the back of the dash thanks very much guys - that's exactly what I needed. Are the connections for the hard line just regular old NPT at the gauge end? LMC sells a kit that I THINK allows soft line to be used and a barb that screws into the back of the gauge (but it just uses ww washer hose as the vac line, I may need a thicker wall vac hose to avoid fluctuation/poor readings - very good to hear that Coley's setup works well). All things being equal, I'll have all the parts for a soft-line approach, if I see any problems, I may upgrade to the hard line. Thanks again, really appreciate the quick response and the great pics!