LMC Tach for 1987 Model?

[Mattchu60]

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!

[Keith Seymore]

My '87 TBI truck came from the factory with the tach cluster.

K

[SCOTI]

Originally Posted by Mattchu60

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!

Not sure on your specific model but I converted my 89 CC dually w/TBI to a tach dash & relocated the fuel gauge over to the blank spot w/the smaller gauges.

[Mattchu60]

Sounds like its a non-issue then - SCOTI - did you cut a hole in your stock cluster and run wires over to the new fuel gauge spot like I have seen some do - reusing the stock printed board? Or did you handle it differently?

[SCOTI]

Originally Posted by Mattchu60

Sounds like its a non-issue then - SCOTI - did you cut a hole in your stock cluster and run wires over to the new fuel gauge spot like I have seen some do - reusing the stock printed board? Or did you handle it differently?

Yes, yes, & re-used the original printed circuit board.

I used the LMC small fuel gauge & a 7k tach w/both using the later year models font so everything matched the remaining OE gauges.

[Mattchu60]

I like the look of that 7k tach - where did you get it at? - the LMC ones are all 5k tachs.

How difficult would you say this install is? I know its always a pain to take the dash apart for me - seems like it takes a good amount of time to get it all out and then back together for me.

[SCOTI]

Originally Posted by Mattchu60

I like the look of that 7k tach - where did you get it at? - the LMC ones are all 5k tachs.

How difficult would you say this install is? I know its always a pain to take the dash apart for me - seems like it takes a good amount of time to get it all out and then back together for me.

http://www.gmsports.com/tags/tachometer

Be advised though, they sent the tach & the 4 gauge cluster assembly. But, the font style for the 2 upper gauges were 81-87 while the lower 2 were 73-80. I was kind of pissed about that. So I ordered the correct font fuel gauge & did it that way. That 4-cluster set-up is still sitting in the box on a shelf.

[Dads79GMC]

Mattchu60, I'll be watching this. Please post the success you have. I have a 91 cluster for my LS conversion and would like a tach and relocate the fuel gauge as well. Good Luck, Mike.