ok i put a 92 speed density tpi in my 88 camaro and i wanted to know if the computer 7730 needs a vss buffer or does the computer have it built in. i hav a mechanical speedo and was going to buy the vss that has the mechanical hook up as well as the vss


ok so now i know i dont need the buffer box just gotta figure out which vss to order i know its 4000 pulse but what about the teeth count

Rodger at www.speedometersolutions.com should be able to answer any questions you have before you even finish asking them.

I called them up and told him "I'm putting Autometer gauges in my 84 Camaro with a mechanical speedo and I need..." he cut me off and told me I need this cable along with this short extension so I can add this hall effect unit that would replace my VSS and that I needed to measure my tires and tell him my gear ration so I could get the correct driven gear and sleeve.
He was spot on!

There are a couple of ways to do this. The current VSS/buffer can be used, but you need to flip a flag in the ECM calibration. If you have PROM burning equipment you can do it that way.

If not, get a 4-pole in-line magnetic sensor. Place it inline with the speedometer cable and wire it to the ECM. No need to change the calibration using this method.

RBob.

thanks for the all the info greatly appreciated