Does anyone know if I can directly swap out my 87 transam 140kmh cluster for an 140mph from a 90 transam without any issues or should i look for a higher kmh cluster.would there be any wiring issues?

 

does anyone have any idea if this is possible?

 

kmh is measured diffrently then MPH so I would imagine you could install it but it would need to be calibrated after installing it.

 

How would i be able to do that?

 

They aren't measured any differently. A metric speedo is interchangeable with an english one.

I don't know if there are any differences between the 87 and 90 Firebird speedos though. They're both electronic so there might not be.

 

I replaced my old "85mph" to a "140mph" and had no troubles. I think that the conversion process takes place in the circuit board that is connected the the speedo gauge, so make sure you change the gauge with the chip board. On my conversion everything seems to be accurate mileage, trip and speed. hope this helps. I'm not sure about the 87 to 90 swap though.

 

Well im waiting for the cluster to be shipped.I guess all i can do is try it out and see what happens.worst case i can just stick with what i have.