40 pulse

[oldcarstulsa]

i am installing a 5.3 4l60 into a jeep wrangler, the transfer case i am using does not alow for a 40 pulse VSS, is there a way to reprogram the computer to a 4 pulse so i can use one of the adpt that screws to the mechanial speedometer out put thank you

[NITROUS]

Here's your easy way out if you don't mind spending a little money and a lot less effort. LOL The SGI-5 or SGI-8 Speed/ Tach Interface You can also use something like a true pulse or an S&P reluctor ring which goes in the tranny tail housing or S&P's tailhousing.

[oldcarstulsa]

i bought the 40 tooth reluctor ring from JTR, and the VSS sensor, but the late model transmissions must be different, once you drill the hole and thread it, you still have a .5 inch gap, and you need a .011 gap, so trying to find something else, wish i had just used a 700R4, but then would have had to changed from DBY to cable, will contact dokato digital and see if there interface will work, didnt see anywhere in there lit. regarding 40 pulse, was hoping that could just be taken care of with pcm tuning, but guess not that lucky, thank you

[NITROUS]

Look at the first paragraph and it says the SGI-5 can recalibrate 8K pulse per mile (ppm) through 250K ppm electronic speedometer pulse rates. A friend of mine has one of these on his truck.

Good Luck!

[oldcarstulsa]

which sender did he use from the tran, a 2 or 4000 or can you use the 8000, is the 8000 from a ford, or what is it from thank you

[NITROUS]

I'm pretty sure it's the 4000 from what I remember. Tech support at Dakota will tell you the best way to go though. I'm pretty sure you can convert just about anything up to 250k so the 8000 should work also.

[oldcarstulsa]

talked to the guys at dakota digital, they said what the had would not work for running the computer. talked to the guy at jags that run, they had a adapt that fits the tailshaft of the late model transmission, then you use the adpt for the old style transmission(4 bolt holes), that makes both adpt the same lenght as the original adpt, then you install the JTR 40 pulse ring and the sender screws into the first adpt, now all will work, still have the mech drive from the transfer case to work the speedometer, and have the 40 pulse to operate the ECM, that was almost more work than fitting the mortor into the jeep! thanks for your help, the dakota stuff was for if your speed ometer worked from something different than 40 pulse, it can go from the 40 to what ever, but cant go from what ever to 40 pulse.