electronic speedometer conversion

paradigm said:

May be swapping my 700R4 to a 4L80e transmission soon on my 5.3LS swapped '86 Monte Carlo SS. The current mechanical speedometer has been very jumpy even after changing the speedometer cable twice, and lubing with white lithium grease. Now the speedometer has stopped working completely too. Time to switch to an electronic speedometer.

Other than the K5 blazer electronic speedometer, do any others fit the Monte Carlo cluster? What about using an amazon / ebay aftermarket speedometer in the Monte Carlo cluster?

I see this conversion thread here using the K5 blazer speedo:

Thread 'Electronic Speedo Conversion PIC HEAVY!!!!!!!'

Jul 16, 2016

I recently aquired the gauge cluster from a 1988 Monte Carlo SS. It was in really good condition, just needed to be cleaned up. My original one from my SS was cracked and broken so I had to take it out of the car. I converted it over to an electronic speedo using a 1990 K5 Blazer Gauge with the SS Faceplace, and dialed it in.

I started with this Cluster, complete with everything

Took it apart and removed the Speedometer and other small gauges

Using my dremel I cut out the back for the electronic speedo gauge...

• Built6spdMCSS
• 1984 6.0l 6spd carlo electronic speedo monte t56
• Replies: 44
• Forum: How-To's / Knowledge Base

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87National said:

Not sure if the monte face plate would be compatible with an aftermarket speedo. That would be a deal breaker for me......I'm a big fan of a factory appearing cluster.

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paradigm said:

Nice setup. Where in NY are you?

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