Dakota Dash VHX-67C-PU Tach issue - The 1947 - Present Chevrolet & GMC Truck Message Board Network

flykelley · 03-30-2019, 04:10 PM

Hi Guys
Did a 5.3/460LE swap from a 2000 Chevy pickup to my 69 C-10. The tach on the Dakota reads 2x higher that the tach when I hooked up a scanner to it. It also doesn't appear to be shifting into overdrive. Running about 3000RPM at 60 MPH. I have adjusted the shifter rod. Moved the shirt lever real slow from netural to what I think is overdrive still running high RPM according to the dash Tach. At idling, the scanner shows 678RPM while the dash tach shows about 1250RPM. Has anyone seen this issue? Trying to figure out which one is correct.

Thanks Mike

03-30-2019, 04:10 PM	#1
flykelley Registered User Join Date: Apr 2014 Location: Waterford MI Posts: 155	Dakota Dash VHX-67C-PU Tach issue Hi Guys Did a 5.3/460LE swap from a 2000 Chevy pickup to my 69 C-10. The tach on the Dakota reads 2x higher that the tach when I hooked up a scanner to it. It also doesn't appear to be shifting into overdrive. Running about 3000RPM at 60 MPH. I have adjusted the shifter rod. Moved the shirt lever real slow from netural to what I think is overdrive still running high RPM according to the dash Tach. At idling, the scanner shows 678RPM while the dash tach shows about 1250RPM. Has anyone seen this issue? Trying to figure out which one is correct. Thanks Mike



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