Electric Speedo?? - Team Camaro Tech
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post #1 of 17 (permalink) Old Feb 28th, 15, 07:43 AM Thread Starter
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Electric Speedo??

My question is have any of you guys gals ran the VSS converter "if that's what it's called" at the firewall then from there the regular cable to the tranny? If I have this all wrong in my assessment let me know. I have the classic update AAW harness and will be running Speed Hut guages TH350 tranny.
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post #2 of 17 (permalink) Old Feb 28th, 15, 07:47 AM
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Re: Electric Speedo??

Not that I have ever used one of these - don't they attach at the transmission then wire up to the digital gauge? So no speedo cable needed?


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post #3 of 17 (permalink) Old Feb 28th, 15, 07:58 AM Thread Starter
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Re: Electric Speedo??

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Originally Posted by 69-Pace View Post
Not that I have ever used one of these - don't they attach at the transmission then wire up to the digital gauge? So no speedo cable needed?
That's what I was kind of stumped on Brian. I did a search but no results here. Figured maybe somebody here had done this before.
I may try the GPS speedo out as well.

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post #4 of 17 (permalink) Old Feb 28th, 15, 09:57 AM
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Re: Electric Speedo??

You should be able to use something like this: http://www.dakotadigital.com/index.c...109/prd109.htm

I was going to do something similar when I had the old Saginaw and electronic speedo. I ended up using a GPS sender instead, but the issue with that was I would drop the speedo signal whenever I was in a tunnel, and there are several tunnels here in Boston. There is also some lag time with the GPS sender, it's not instantaneous.


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post #5 of 17 (permalink) Old Feb 28th, 15, 01:58 PM
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Re: Electric Speedo??

I just sold a box that runs VSS to drive a motor that runs a cable speedo.

They work very well

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post #6 of 17 (permalink) Old Feb 28th, 15, 02:05 PM
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Re: Electric Speedo??

Jon, my question is if your running Speedhut gauges (which are the best Ive ever used by the way) are you not going with GPS and ditching the need to connect to the tranny altogether ??
I didn't notice any lag with my Speedhut speedo

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post #7 of 17 (permalink) Old Feb 28th, 15, 04:32 PM Thread Starter
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Re: Electric Speedo??

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Originally Posted by Sheck44 View Post
Jon, my question is if your running Speedhut gauges (which are the best Ive ever used by the way) are you not going with GPS and ditching the need to connect to the tranny altogether ??
I didn't notice any lag with my Speedhut speedo
That's a good point you and Brent have made together Steve. I just didn't know anything about the GPS stuff and how they worked for anyone else. How did you guys mount the GPS puck? Got any photos of your install? And does yours lag any like Brent describes his doing? And if you don't mind me asking which did you wind up going with the legacy etc..??

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post #8 of 17 (permalink) Old Feb 28th, 15, 04:53 PM
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Re: Electric Speedo??

Jonathon, I would second the GPS speedo signal option. Less wiring to run outside the body (to and from trans) and if you ever decide to change your trans to a overdrive (or any other one) it will be one less thing to deal with. Either way, I would call Speedhut and see what pulse their speedos require. Nice looking car!

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post #9 of 17 (permalink) Old Feb 28th, 15, 05:47 PM
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Re: Electric Speedo??

The lag time is only noticeable when accelerating hard. The GPS signal averages your speed over a given distance/time, so under normal driving it's not an issue. But it's a fairly common complaint under hard acceleration.

If you don't have tunnels or tall city buildings you'll be fine. In Boston we have both. If you have ever used GPS to get somewhere and it drops the signal or "misplaces" you on a map, then your GPS speedo would have dropped too. I had a Boston cop follow me through a 3+ mile long tunnel with no speedometer reading and I came out the other side doing about 10mph under the limit!


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post #10 of 17 (permalink) Old Feb 28th, 15, 08:16 PM Thread Starter
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Re: Electric Speedo??

Quote:
Originally Posted by 130fe View Post
Jonathon, I would second the GPS speedo signal option. Less wiring to run outside the body (to and from trans) and if you ever decide to change your trans to a overdrive (or any other one) it will be one less thing to deal with. Either way, I would call Speedhut and see what pulse their speedos require. Nice looking car!
Thanks for the info Chris, I've got to figure out where to mount the puck to where it's not too noticeable if I go that route. Definitely the best way none the less without all the wiring headaches outside the cabin and back. Thanks again

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Originally Posted by 67Rally View Post
The lag time is only noticeable when accelerating hard. The GPS signal averages your speed over a given distance/time, so under normal driving it's not an issue. But it's a fairly common complaint under hard acceleration.

If you don't have tunnels or tall city buildings you'll be fine. In Boston we have both. If you have ever used GPS to get somewhere and it drops the signal or "misplaces" you on a map, then your GPS speedo would have dropped too. I had a Boston cop follow me through a 3+ mile long tunnel with no speedometer reading and I came out the other side doing about 10mph under the limit!
No big buildings here Brent. But good info to think about. I see the jump you describe in my boats GPS when taken to a hard acceleration. It will skip or round up until it catches up. I assume the pointer don't just jump to that speed? It just swings as fast as the gauge will let it up to the speed being ran?
Great info guys for sure...

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post #11 of 17 (permalink) Old Feb 28th, 15, 08:25 PM
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Re: Electric Speedo??

I notice the GPS lag getting on the highway. Another issue is I have gone as far as three miles before it aquires a signal after starting the car. Not always that far but 1/2 mile is pretty common.
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post #12 of 17 (permalink) Old Mar 1st, 15, 05:13 AM
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Re: Electric Speedo??

VSS to mechanical Speedo

http://www.abbott-tach.com/cablex.htm
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post #13 of 17 (permalink) Old Mar 9th, 15, 08:10 AM
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Re: Electric Speedo??

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Originally Posted by 67Rally View Post
But it's a fairly common complaint under hard acceleration.
shouldn't speeding tickets be a complaint under hard acceleration?

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post #14 of 17 (permalink) Old Mar 9th, 15, 08:35 AM
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Re: Electric Speedo??

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shouldn't speeding tickets be a complaint under hard acceleration?
Technically I think they get you for exhibition of speed. You don't even have to break the speed limit for that, you just need to be having fun.


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post #15 of 17 (permalink) Old Mar 10th, 15, 05:58 AM Thread Starter
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Re: Electric Speedo??

Ordered gauges yesterday from Speedhut. Should be around 2 to 3 weeks for delivery. I will post up some pics when they arrive.

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