Metric overlays on MPH speedo

Reply Subscribe

Thread Tools

Search this Thread

Jul 30, 2009 | 01:02 AM

VAN454

Thread Starter

Member

Joined: May 2006

Posts: 330

Likes: 1

From: Melbourne Australia

Car: 88 GTA

Engine: Ls1

Transmission: 4L60E

Axle/Gears: 9 bolt 3.27

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

Jul 30, 2009 | 07:55 AM

JamesC

Moderator

iTrader: (5)

Joined: Aug 1999

Posts: 19,282

Likes: 103

From: Lawrence, KS

Car: Met. Silver 85 IROC/Sold

Engine: 350 HO Deluxe (350ci/330hp)

Transmission: T-5 (Non-WC)

Axle/Gears: Limited Slip 3.23's

Re: Metric overlays on MPH speedo

Quote:

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

Jul 30, 2009 | 08:18 AM

VAN454

Thread Starter

Member

Joined: May 2006

Posts: 330

Likes: 1

From: Melbourne Australia

Car: 88 GTA

Engine: Ls1

Transmission: 4L60E

Axle/Gears: 9 bolt 3.27

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

Jul 30, 2009 | 10:10 AM

jmd

Supreme Member

iTrader: (4)

Joined: Jul 2000

Posts: 6,522

Likes: 92

From: Aridzona

Car: `86 SS / `87 SS

Engine: L69 w/ TPI on top / 305 4bbl

Transmission: `95 T56 \ `88 200-4R

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?

Jul 30, 2009 | 06:16 PM

VAN454

Thread Starter

Member

Joined: May 2006

Posts: 330

Likes: 1

From: Melbourne Australia

Car: 88 GTA

Engine: Ls1

Transmission: 4L60E

Axle/Gears: 9 bolt 3.27

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?