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Mattchu60 · 04-27-2017, 09:10 AM

I have been looking at the LMC Tach for some time, would love to have that factory looking tach in my dash. I have read some of the write ups on here about installing one into a cluster and how to relocate the fuel gauge.

One big mystery I have stumbled into is if this will even work on my truck - I have a 1987 model with EFI. I have read somewhere that this model year cannot have a tach, because 87 EFI trucks have speed sensor (VSS) feedback needed for the factory EFI computer.

I wouldnt think the VSS would be affected by the tach, but i have never tore into a cluster before so maybe its on a spot where it wont work?

If anyone has done this on an 87' model, I would appreciate input. Thanks!

04-27-2017, 09:10 AM	#1
Mattchu60 Registered User Join Date: Jan 2014 Location: Swaledale, IA Posts: 485	LMC Tach for 1987 Model? I have been looking at the LMC Tach for some time, would love to have that factory looking tach in my dash. I have read some of the write ups on here about installing one into a cluster and how to relocate the fuel gauge. One big mystery I have stumbled into is if this will even work on my truck - I have a 1987 model with EFI. I have read somewhere that this model year cannot have a tach, because 87 EFI trucks have speed sensor (VSS) feedback needed for the factory EFI computer. I wouldnt think the VSS would be affected by the tach, but i have never tore into a cluster before so maybe its on a spot where it wont work? If anyone has done this on an 87' model, I would appreciate input. Thanks!