I am still working on finding out what year Camaro the tch is that I have in my truck. My dad can't remember what year he got it from, and I have been scouring the wrecking yards for similar...nothing so far..late 80's were totally different...I still thnk the font/colors look like late 70's early 80's..thats what vintage I would focus on, but not rule out the 70-81 series, nor mid 80's...
Just looked on ebay for "camaro tach" and found this
http://cgi.ebay.com/ebaymotors/aw-cgi/ebayISAPI.dll?ViewItem&item=580753721&r=0&t=0 Without being able to compare sizes, not positive, but I bet thats it.
Not at my truck right now, but I am almost 100% sure that my dad used the needle off the gas gauge on the tach, to replace the "fat" needle on the Camaro one.
There isn't much to the changeover. Unbolt the fuel gauge face from the stuff on the back of it. Unbolt the Tach face from the electronics on its back. Glue (black silicone is invisible) the tach gauge to the fuel gauge face. (have to cut the holes for 4wd and brake in the tach I believe first) Rivet (my dad did anyway) the Camaro electronics to the now joined tach face/gas face. Done with that. Now again, not sure if any mounts or anything had to be removed from the tach face, but if so, no biggie.
Going to have to cut a hole in the back of the blue dash piece to get the wires through also I assume. The correct Camaro tach will take a seperate plug, and will NOT require any mods to the printed circuit board, (not really a board anyway) for the tach itself. The plug is easy, one wire to the dist. cap, one to the fuse panel (ign. hot) and one to ground, I used the grounding strip (bus bar) thats already under the dash on my '86.
The only other thing is now you don't have a fuel gauge. I believe from the same Camaro, he removed the small gas gauge, and did the same thing, only this time removing the clock. the clock is tied into the printed circuit board, but so is the fuel gauge. Run wires from the correct copper path on the printed circuit board from the original fuel gauge, (be careful soldering the circuit board!) and solder them to the clips that make contact on the back of the clock/gas gauge.
That should do it, all done : )
Dorian
My K5 and Chev/Olds tech/links page: <A target="_blank" HREF=http://www.dorianyeager.com/index2.html>http://www.dorianyeager.com/index2.html</A>