Originally Posted by tgansert
True true. Check thread, I have an LS Trans. Does this change your recommendation? By what you say, I would have a problem ustilizing a GSR cluster. A more technical explanation like the one you gave me makes more sense to me than layman's terms. Don't hold back, slugger.
With everything I have read above, I need a more dense tach, not LS and not GSR. Seems like it needs new math to encompass the LS trans on a higher revving motor. Can I get hallelujah? So basically, I need to install a TV that plays porn 24/7 where my tach is and go for an Autometer Tach.
With that said, anyone know where I can get a tach that won't show off for the thieves?
:chuckles: What ever rocks your party, eh? The cops might take a dim view of the TV being in plain sight..

h:
After you mentioned you've got an LS trans, I'm beginning to doubt my theoretical math. [I have a high degree of skepticism about math in general; this situation just elevated it and focused it.]
Furthermore, the Factory Shop Manual shows no distinction in VSS sensor rates between the DC2/DB8s [VTEC coupe & sedan] and the DC4/DB7s [Non-VTEC coupes and sedans]. So the speedo ought to be fine. :dunno:
Since the tachometer is a sub-component of the Gauge Assembly, it could be replaced, in theory, with a GSR tach
assuming the printed circuit boards are identical.
Not wanting to spend more than is absolutely necessary, I'd try running the car with the stock LS cluster and see if the tacho is accurate.
A good way to do this is to take the car (fueled with premium gas of course) in 2nd gear, up to about 5500 rpm indicated and see if the VTEC lobes engage. VTEC system woes not withstanding, you can use the stock switchover point to gauge the accuracy of the LS tachometer.
If all is well, I'd try disassembling the gauge cluster to retrofit a GSR tachometer. That's about as low-profile as you can get.