VSS - 4l60e swap

[smurfasaur]

Swapping a 5.3/4l60e into my K20 with an NP208 that has a cable speedometer. I thought I had a good solution worked out for the VSS (using Dakota Digital SEN 01-4160 driven off the mechanical speedo cable in the transfer case coupled with a SGI-5e to increase the output to 128k/mile), but I was just reading on Jags That Run that the only way to make a VSS work right with a 4x4 mechanical speedo is to use a clamp on reluctor ring on the output shaft of the tranny, and drilling a hole in the tailhousing/4x4 adapter for the VSS.

Anyone else running a similar combo? What are you guys doing to solve the VSS issue?

Price wise it would be cheaper to go for the drilling and reluctor ring, which would probably give a more reliable reading (and I already have the VSS off the 2wd tailhousing my tranny came with). But at the same time I’m a little squeamish about drilling a hole in my tranny adapter (kinda hard to fix if I eff it up).

Thanks


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[smurfasaur]

Nobody has any info? Does anyone know any members or even someone not on the forum who has a similar setup that I could pick their brain?

Getting close to being able to stick everything in the truck and machining a hole in the tranny tail housing would be much easier if I did it before it was installed


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[VileZambonie]

The VSS input depends on what you are using for a controller. Are you using a factory PCM?

[smurfasaur]

Yep factory pcm so it should want the 40 pulse per revolution. The more I research I think it will be fine to go the Dakota Digital route... May not shift quite right in Low but I have maybe used Low twice in my years of driving a 4x4 so I’m not super concerned.

Also I was thinking, does anyone know if the speedometer is “off” when driving a truck in Low? Thinking it must be since the speedometer gear is in the output housing of the NP208 I have.


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[VileZambonie]

Why not run a 40 pulse vss? Just google it and there are different solutions depending on which way you want to set it up. I would use a pass through Like #3
http://www.jagsthatrun.com/Pages/SpeedSensors_Speedometer.html

[smurfasaur]

I would love to run a 40 pulse pass through sender, but I can’t find one! The number 3 you are referring to is a 4 pulse sine wave sender, not a 40 pulse sender. I saw that too and got excited but the number 3 you’re referring to is the descriptions of the different types of stock speed sensors. Below the pictures are the descriptions of the speed sensors JTR sells


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[VileZambonie]

email Chris CaptKaos here and see if he can get you a price on a signal converter or try advance adapters.

[smurfasaur]

Ended up ordering the Dakota Digital passthrough 8k sender and the SGI 5e before I saw your response about emailing Cap. I’ll post up if it works or not I’m surprised there isn’t more info about this somewhere on the interwebs


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[hdaniels]

Ended up ordering the Dakota Digital passthrough 8k sender and the SGI 5e before I saw your response about emailing Cap. I’ll post up if it works or not I’m surprised there isn’t more info about this somewhere on the interwebs


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Doing a LS swap with a similar set-up. I have a 4L60E transmission and NP208 transfer case. I am using a Holley Terminator X Max for the ECU and to control the transmission. I am trying to determine which pulse generate VSS to install. Dakota Digital makes two different Speedometer pulse generators. 128k High Frequency GM Pulse Generator Part# SEN-01-128 and Speedometer 8K Pulse Generator SEN-01-1. I can't figure out which one to purchase. How is your set-up working for you?

Thanks!