Can you make an 8cyl tach work with a 6?

[Kaiserman]

Just picked up an original 69 dated Sun Super Tach from my buddy. It was in an 85 F150 with a 300 so we both thought that it was a 6cyl tach.

I opened it up and it's an SST-802. For a V8. Just wondering if I can do anything to make it work with the 230 in my 63.

Thanks.

[mrtazwrench]

If it seemed accurate on the ford maybe it was modified, other ones I've had have a 4-6-8 switch in them.

[Kaiserman]

Possible. Some one replaced all the wiring. At least it looks like it. The colors are all wrong for a Super Tach. Truck has no key though so I couldn't start it (easily).

My buddy bought the truck to scrap from the same guy he bought a 69 Corvette 350HP 350 4-speed car from. Thinking it might have come from that.

[Stuka]

They are different internally. You can make it work, but if it doesnt have a switch to choose between each, then its going to require changing some components.

[Kaiserman]

Any idea what? I've read about changing out resistors and capacitors.

[hutcho]

All my sunpros have the 4,6,8 switch

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[Kaiserman]

This isn't a Sunpro, it's a Sun Electronics Tach. One of the originals before Actron bought the rights to make Sun tachs and started calling them Sunpro.

[hutcho]

Oh gotcha, ill have to look but I know I have a really old one laying around somewhere ill have to look and see if its like that now...

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