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Metric overlays on MPH speedo

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Old 07-30-2009, 01:02 AM
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Metric overlays on MPH speedo

Hi guys, I am wondering if anyone knows if I can fit metric overlays into my GTA when I have the 140mph speedo. Here's the link
http://www.macewenmotorsports.com/pf...l-87-s1uc.html
I can't see why it wouldn't work, but I figure I'll see if anyone knows before I order some
Old 07-30-2009, 07:55 AM
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Re: Metric overlays on MPH speedo

Originally Posted by VAN454
Hi guys, I am wondering if anyone knows if I can fit metric overlays into my GTA when I have the 140mph speedo.
My guess is that the overlay would work fine--no reason I can think of why it wouldn't.

JamesC
Old 07-30-2009, 08:18 AM
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Re: Metric overlays on MPH speedo

Thanks, that's pretty much what I was thinking. The only thing I could think of that might make it not work is if the stock gauges are backlit, which I'm not sure about on Firebirds, I know the Camaros aren't
Old 07-30-2009, 10:10 AM
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Re: Metric overlays on MPH speedo

Hmm. I'm remembering the needles being clear and transmitting backlighting for sure. Althought I haven't looked at a cluster in a while, the mph marking might be backlit too?
Old 07-30-2009, 06:16 PM
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Re: Metric overlays on MPH speedo

That's what I am wondering, if the lighting just comes from the needles then it should be okay, but if it comes through the cluster it won't work. Does anyone know?
Old 08-11-2009, 05:44 AM
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Re: Metric overlays on MPH speedo

So no one knows if the dash lights shine through from behind or if they shine from the needle?
Old 08-26-2009, 05:34 PM
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Re: Metric overlays on MPH speedo

Anyone????? Help......
Old 08-30-2009, 03:38 AM
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Re: Metric overlays on MPH speedo

If my math is right 140mph is 225kph so it will be a little fast.
Old 08-30-2009, 07:05 AM
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Re: Metric overlays on MPH speedo

Originally Posted by andrewmp6
If my math is right 140mph is 225kph so it will be a little fast.
I am 99% sure that the calibration is the same as the 140mph speedo.
Old 09-01-2009, 07:36 AM
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Re: Metric overlays on MPH speedo

Yeah and most factory speedos are off so it should come out even.
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