The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post

Chris.S · 02-22-2017, 02:30 PM

I cant talk for Speedo.But I did install a aftermarket Tach. There is a output from the ECM. Mine was tune for corrected output is not I believe you need to adjust your tach for 4 Cyl

02-22-2017, 02:30 PM	#2
Chris.S Registered User Join Date: Feb 2017 Location: New brunswick Canada Posts: 20	Re: 1987 R10 LSx Swap Gauge Replacement I cant talk for Speedo.But I did install a aftermarket Tach. There is a output from the ECM. Mine was tune for corrected output is not I believe you need to adjust your tach for 4 Cyl __________________ 1980 Chevy Short step 5.3 Manual Instagram:https://www.instagram.com/chris.s.custom/?hl=en Youtube:https://www.youtube.com/channel/UCzh...vuHKm04yVK4X9w