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Saw a thread the other day with a 300 MPH speedometer which got me to wondering:
1 - are 300 MPG speedos available in the USA from GM? OR, are the 300 MPG speedos a Canadian only thing? - I'm referring to a factory/GM 300 speedometer gauge face.
2 - has anyone swapped their 200 MPH Speedo out for a 300 MPH speedo? if so, what is all required?
3 - can you just swap the factory 200 MPH speedo for a 300 MPH speedo - will everything work and will your speed show correctly on the 300 MPH speedo, OR, do you have to swap other parts / sensors, etc . . . in order to get a 300 MPH speedo to work correctly
IN SHORT, someone been there/done this, who can walk me thru the process? I think it would be COOL to have a 300 MPH speedo. It's the one interior mod I'm seriously interested in.
Actually, I got the picture of the guages I'm talking about w/ the 300 MPH speedo to appear in post #4, BELOW vvv
I know the car won't actually do 300 MPH, I just want a speedo that SHOWS 300 mph -
I'm trying to figure out if that is a US, Canadian or European 300 MPH speedometer; then, I need to figure out what all is needed to make it work; then, I need to figure out where to get the parts.
The way it appears in the above post, it is a 300 MPH speedo, and the DIC button is used to go back and forth between MPH and KPH, just like our Vette's do w/ the 200 MPH speedo.
Last edited by 94legaleagle; Feb 6, 2007 at 12:41 AM.
Reason: added picture in post #4
You will be the talk of all the local ricers and newbies! (It says 300, so it must go 300!)
The 300 is to represent when its switched to km/h. Mainly because on the US version, while running in the Km/h mode on the DIC, 200 km/h would only be abou 120 mph... and we know the C5 easily goes over that.
I DO UNDERSTAND that when its in Mph mode it works too, but your needle will almost always be leaning to the left, not even using half your gauge.
Doing this swap would be purely for the useless bling effect, like NOS stickers with no nitrous.
But to each their own, you would just need to find a way to adapt your euro console to your US computer. Or swap it all out entirely. Pretty expensive if you ask me to change your 200 to a 300... lotta money for one digit.
But to each their own, you would just need to find a way to adapt your euro console to your US computer. Or swap it all out entirely. Pretty expensive if you ask me to change your 200 to a 300... lotta money for one digit.
Do we know for a fact that the "euro" console is pinned differently, or might it simply be a case of the speedo being calibrated differently, in which case it would simply be plug and play in the USDM cars.
Do we know for a fact that the "euro" console is pinned differently, or might it simply be a case of the speedo being calibrated differently, in which case it would simply be plug and play in the USDM cars.
Good question -
And, aren't most of us about "bling" - I simply think it would be cool to have a 300 MPH speedo - not quite the same as having NOS stickers, but no NOS - stickers don't do anything for you whereas the 300 MPH speedo WILL still show your speed, up to the max speed of the car - who cares that the MPH digits from 187 (or so) to 300 would not get used (unless you switched to KPH)
Fastbird93 restated my question in a great way - if you get a 300 MPH speedo, is it plug and play, or does something else need to be done to make the 300 MPH speedo show the correct speed in the USofA?
I'm pretty sure you'll need to swap the whole cluster since the US cluster has high resolution up to "100" and low resolution from "100" to "200". The Canadian speedo is constant all the way from "0" to "300".
Don't forget that you'll be stuck with metric water temp and oil pressure gauges if you do the swap... not a big deal to some, but I prefer the old PSI and Deg. F for my dash... I live in Ontario but I imported my car from NY.
Don't forget that you'll be stuck with metric water temp and oil pressure gauges if you do the swap... not a big deal to some, but I prefer the old PSI and Deg. F for my dash... I live in Ontario but I imported my car from NY.
Swapping the entire cluster was without question, but you do bring up a good point. I'm willing to bet that individual components could be pulled from the cluster to make it all work though. Just takes some ingenuity.
Swapping the entire cluster was without question, but you do bring up a good point. I'm willing to bet that individual components could be pulled from the cluster to make it all work though. Just takes some ingenuity.
The gauge cluster is a single unit. I don't think you're gonna find you can swap out single gauges. Look at the picture above of a "Metric" IPC and you'll note that the gauge lettering is metric for oil pressure and water temp.
Also, I suspect that you MAY have to re-program the BCM (requires a Tech2) as the BCM "knows" the "Country of Sale" and probably sends data out accordingly.
I've seen two US cars in person that have this swap. Both have Z06 300 "mph" units (the bastages). My understanding is that it's a direct bolt-in, no reprogramming required. Call Greg at AntiVenom if you want to know for sure; he put one in his car. I don't believe the parts are readily available from GM, but there is a certain used market for them. They are not cheap.
I've seen two US cars in person that have this swap. Both have Z06 300 "mph" units (the bastages). My understanding is that it's a direct bolt-in, no reprogramming required. Call Greg at AntiVenom if you want to know for sure; he put one in his car. I don't believe the parts are readily available from GM, but there is a certain used market for them. They are not cheap.
Thanks for the heads up - Is AntiVenom a supporting vendor, or can you PM me w/ contact information - they sound vaguely familiar, but I'm not sure how to contact them
I was starting to toy w/ the idea of getting a used cluster out of one of the car's for scrap that occassionally appear here, and then tinkering w/ the back of it to see if I could swap in a 300 speedo, but leave everything else the same - then contact one of our Canadian or European brothers to get the cluster - but I'll call Greg and see what he says -
I bought a spare IPC and tore it apart, I've been working on a way to change the lighting to Red. The gauges are all individual and you shouldn’t have a problem with swapping in the 300 MPH gauge. The faceplates are just held on with double sided tape. I have some pics here….
I bought a spare IPC and tore it apart, I've been working on a way to change the lighting to Red. The gauges are all individual and you shouldn’t have a problem with swapping in the 300 MPH gauge. The faceplates are just held on with double sided tape. I have some pics here….
Now whether or not it'll function correctly, I can't answer that...
I can't see pics from work, but from what you are describing, this should actually be a fairly easy swap to make happen so long as you have a donor euro cluster handy.
Physically… yes it can be accomplished without too much grief. Now that I’ve already taken out the IPC once it would probably take me less then an hour to get it out and disassembled. I don’t have a clue as to whether or not the 300 MPH Speedo is a plug and play swap.
When you get home look at the backside pic and you'll see two groups of four small Philips headed screws towards the center bottom of the cluster right above the DIC screen cover. Those are mounting screws that hold the actual Speedo and Tach gauges to the cluster. The faceplate supports are also held in place by small Philips screws accessed from the front only after the gauge faces are peeled off.
I'm missing something I guess. My speedo goes to 300. It may be true that it doesn't go past 187 mph or 183 (300 kph) because limitations but two things occur to me:
1. Only a goober is going to believe the car can go to 300 mph regardless of what the speedo shows and what it means.
2. Anyone who is smart enough to think the speedo is bogus is also going to be smart enough to not to get in the car with you to find out.
Put some NOS stickers on the car to reinforce the speedo indicaton.