Electronic or mechanical speedo? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Brute · 08-23-2020, 08:08 AM

I’m about four weeks in my new (to me) ‘67 C10. Still working through all the gremlins. Noticed a small tranny fluid spot on the driveway. Put it on a local mechanic’s lift for a look. A “rigged” connection of the speedo cable seems to be the culprit. Although an impressive McIver-like rig, including zip ties, it needs to be fixed. I have a 454 w/ 700r4 and want to do what’s best. Any opinion on mechanical vs electronic sensor?

gmc684x4 · 08-23-2020, 02:36 PM

700r4 can run a mechanical speedo
I would keep it stock

If your running a 4.8 5.3 6 liter with 4l60e 4l80e then i would look at electric speedo as the new tranny has no mechanical provisions and the computer for the engine needs a speed input

08-23-2020, 08:08 AM	#1
Brute Registered User Join Date: Aug 2020 Location: Sarasota, Florida Posts: 4	Electronic or mechanical speedo? I’m about four weeks in my new (to me) ‘67 C10. Still working through all the gremlins. Noticed a small tranny fluid spot on the driveway. Put it on a local mechanic’s lift for a look. A “rigged” connection of the speedo cable seems to be the culprit. Although an impressive McIver-like rig, including zip ties, it needs to be fixed. I have a 454 w/ 700r4 and want to do what’s best. Any opinion on mechanical vs electronic sensor? Last edited by Brute; 08-23-2020 at 08:11 AM. Reason: Fixed fat finger mistakes

08-23-2020, 02:36 PM	#2
gmc684x4 Registered User Join Date: Jul 2012 Location: Whitehorse yukon Posts: 1,218	Re: Electronic or mechanical speedo? 700r4 can run a mechanical speedo I would keep it stock If your running a 4.8 5.3 6 liter with 4l60e 4l80e then i would look at electric speedo as the new tranny has no mechanical provisions and the computer for the engine needs a speed input



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.