Hey guys, looking for a little help on my project. I've got an 84 C10 that I'm looking to do some serious parts rearranging. I'll be installing a TBI fed 454, as well as a 4l80e, while swapping it onto a 4x4 chassis.
Here is where I'm a bit stumped. I know my 80e is going to want to see a 40 pulse per driveshaft RPM VSS signal, but I'd like to retain the stock 84 instrumentation, which includes a cable driven speedometer (cable driven speedo output on the transfer case). I've heard that the speedometer has a built in 4 pulse per cable revolution optical VSS built into it. Is there a way to utilize this existing VSS signal to feed my 7427? I do have a Burn1 and an Extreme ALDL DVD cable, so getting into the PCM shouldn't be an issue. Don't help you guys can provide is greatly appreciated.
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