67 68 Barracuda Dash and Performance Indicator Installation

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jagsdtc

jagsdtc
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Since there is no silly question...
I came upon a 67 Barracuda Instrument Gauge cluster that has a performance indicator that I want to use in my 68 Barracuda.
Question 1- Will a 67 instrument cluster connect to a 68 dash?
Question 2- What does the performance indicator connect to on the car? Appears to be a vacuum line output from the indicator.

Thanks!
 

Question 1- Will a 67 instrument cluster connect to a 68 dash?
Question 2- What does the performance indicator connect to on the car? Appears to be a vacuum line output from the indicator.
1) yes but not a 100% bolt-in.

2) The unit measures vacuum, so; you can plumb it to any vacuum source. I have, in the past, used it to help map out my VA, and then, while driving with it Tee'ed to the Sparkport, I could calculate when and how much VA my engine was getting.

Most guys use it as pseudo gas-mileage indicator.
 
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67 VS 68 has subtle differences round knob vs thumbwheel radio for starters. Wiper switch mount is oriented differently as well. Performance indicator and any rally gauges(67-69) are a direct swap.
 
I believe the cluster housing is the same, the 67 housing should mount to the 68 dash bezel.
Only the speedometer is different (and tach), all the other gauges are the same.
The 68 speedometer uses a clip on cable and the 67 uses a thread on.
Depending on what you overall objective is you can mix and match gauges as needed.
If all you want is the vacuum gauge then just transfer it to your cluster.


Alan
 
There are 3 Phillips head screws in a triangular pattern that hold the gauge in place. Other than having to lay in a very uncomfortable position it can be done with the 68 panel in place. I have to agree with Al... unless your current panel is toasted, I would just install the 67 gauge in the 68 cluster. Having the performance indicator is better than an empty gauge socket.
 
It will need a small diameter vacuum line run through the firewall. There's a dimple in the firewall where the grommet goes. I do not recall if the original type grommet is available. Use either a T in an existing manifold vac line, a multi-port fitting, or vac port on the base of a carburetor. Whicherver is most convenient.

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