V8 Tach Conversion question - swapping circuit boards?

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V8 Tach Conversion question - swapping circuit boards?

Postby Corellian Corvette » Wed Sep 10, 2014 2:31 am

V8 swap in my 72 GT is coming to a close. One of the last things is to modify the tach.

I have the correct capacitors and the instructions - and one thing I noticed is there is an option to "swap the circuit board from a v8 tach"

I have several old Firebird gauge clusters from 2nd gen cars. Probably have 3-4 working tachs with lousy faces.

As anyone done the circuit board swap? Is that easier than adding the capacitors (I'm lousy at soldiering)?

Pics would be great.
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Re: V8 Tach Conversion question - swapping circuit boards?

Postby cosvega76 » Wed Sep 10, 2014 8:09 am

That's the way I've done all of my Vega tach conversions. The F-body (I've also used late-'60s X- and B-body ones, as well) circuit board swaps right in.

Chuck
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Re: V8 Tach Conversion question - swapping circuit boards?

Postby Corellian Corvette » Wed Sep 10, 2014 1:09 pm

Good to knoW! I'll grab some cores and see what's possible. Do you have any pictures so I can see what to expect?
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Re: V8 Tach Conversion question - swapping circuit boards?

Postby cosvega76 » Wed Sep 10, 2014 3:02 pm

I don't have any photos, as my conversions were done years and years ago. It's a simple swap - just match up the three pins for the board and away you go.


Chuck
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1973 Chevrolet Vega GT

Re: V8 Tach Conversion question - swapping circuit boards?

Postby Corellian Corvette » Sat Sep 13, 2014 6:51 pm

Chuck

I pulled the tach from a late 70's Firebird and the boards are completely different. The tach board in the Vega is pretty small. The F-body one is much larger and pins are in completely different locations.

Which model boards did you use?

Thanks!
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Re: V8 Tach Conversion question - swapping circuit boards?

Postby cosvega76 » Sun Sep 14, 2014 7:31 am

I've used boards from a '68 Impala, '69 Nova, and '71-'73 Camaro.


Chuck
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