Tach Signal On a Ls7 Swap?
02-02-2009, 04:25 PM
#2
You cant..................
However, you can swap a later year electronic tach and use the mechanical tach faceplate and housing. You'll also have to reprogram the computer to output an 8 cylinder signal rather than 4.
Or, I found an Isspro tach I had laying around that has the same sweep and even faceplate screw pattern as my 68 tach. It took a little cutting of the the plastic to mount it, but it fits perfectly and uses the LS computer 4 cylinder signal.
However, you can swap a later year electronic tach and use the mechanical tach faceplate and housing. You'll also have to reprogram the computer to output an 8 cylinder signal rather than 4.
Or, I found an Isspro tach I had laying around that has the same sweep and even faceplate screw pattern as my 68 tach. It took a little cutting of the the plastic to mount it, but it fits perfectly and uses the LS computer 4 cylinder signal.
02-02-2009, 04:42 PM
#4
Le Mans Master
Several of the instrument restorers can convert your original to electronic. Places like Corvette Clocks by Roger and probably Corvette Instrument Service.
02-02-2009, 05:01 PM
#5
Race Director
I had mine converted a few years ago to electric. Much smoother operation and no cable to deal with. To work with the LS7 you will have to convert. As said most gauge restorers can do this for you.
02-02-2009, 05:27 PM
#6
Like I said, I used the Isspro electronic tach in the 68 housing with the 68 faceplate needle and face. It looks exactly like a 68 from the inside. I suspect this is what the retrofitters do.
Here's the tach I used. I can try to find pics.
http://www.isspro.com/proddetail.php?prod=R85100
Here's the tach I used. I can try to find pics.
http://www.isspro.com/proddetail.php?prod=R85100
02-02-2009, 08:51 PM
#7
Melting Slicks
I had my '64 gauge converted by Roger at www.corvetteinstruments.com
like you, i wanted to retain my stock face so it wouldn't look different from my view.. he used the guts from a late 70's electronic tach and retained my original gauge face..
several members have done it themselves, but I preferred to hire it out.. I needed work done to a couple other gauges at the same time..
like you, i wanted to retain my stock face so it wouldn't look different from my view.. he used the guts from a late 70's electronic tach and retained my original gauge face..
several members have done it themselves, but I preferred to hire it out.. I needed work done to a couple other gauges at the same time..
