I currently have the speedometer that says Z28 on it, and goes up to 145mph.

I bought 145mph white halo glow gauge things, but I really don't want to fudge up my speedometer. And a regular 145 is so dang pricey now!

Can I just get an 85mph one and put the overlay on it? How could I re-calibrate it?

Thanks!

 

Recalibrating a 85 mph would be more $ then just buying a 145 cluster. Yours -would- work fine as the numbers are in the same places as the normal 145, but the trip reset is in a different spot, along with the trip and odometers are reversed.

 

Weak. Yah, I'm kinda glad that they won't fit on my gauge, as I might have done it! I haven't seen many of that speedo; I have no idea what they came in either.

Guess I'm off to the classifieds!


BTW, how would you go about calibrating it?

 

That's odd that your car has it at all. That is the over-the-counter GM parts 145 speedometer. You could order that before the factory 145 was included, note they are really close in design save for the few small differences I mentioned earlier. AFAIK, all TPI camaros from 87'-89' had the 145 speedometer standard (some late 86 cars got it as well). [on 90-92 cars, only the 5.7 cars got it]

As far as calibration, it would need to be rewound by a shop that deals with that sort of thing. I have never bothered to look into it too far, but complete clusters are in the 80-150 range.

 

Yah, I actually pulled the speedo from a parts yard for $20

My car is an 88 Iroc-Z with the LB9 and a T5... but I got the 115