[Freak]

I have 2000 GMC Sonoma that I am installing a 231/300 doubler and running twin sticks, I am running the stock drive train 4.3L V6 and and 4L6E trans with the stock computer, thus, the trans wont shift right without the spedo. Also, I have 72 Bronco axles (D44 & 9") I found this kit from mass adapters, I am curious if anyone has a more cost effective solution?

Chevy has the speed sensor in the tail shaft of the tcase, but eliminating all the electronics on the tcase (orginal was a 233 electronic shift) and not using a Chevy shifter so the cmoputer wont know when the case is low, and having the doubler makes a lower ratio (roughly 6:1) so would it be better to have the speed sensor on the tail shaft of the trans anyway?

 

[Disturban]

Your best bet would be run a 700R4 instead of the 4L60E.

 

[Freak]

yes, when I want to put a new trans in it along with a new computer ill give you a call, then you, your son, and I can smoke some dope and come up with more dumb ideas. Wait, I would have to put a new gauge cluster in too to get a working spedo since this is my DD and its kinda nice to have. :thumb: Honestly I don't want to replace a perfectly good trans when there are easier, and cheaper options.

 

[Kodiak450r]

you will need a VSS on the output of the t-case. your problem is gonna be with the 4 low. the stock truck gets the 4 low input from the transfer case control module. there is no external source such as a switch on the tcase like older trucks had. your gonna be SOL on that part.

 

[Nuggets]

yes, when I want to put a new trans in it along with a new computer ill give you a call, then you, your son, and I can smoke some dope and come up with more dumb ideas. Wait, I would have to put a new gauge cluster in too to get a working spedo since this is my DD and its kinda nice to have. :thumb: Honestly I don't want to replace a perfectly good trans when there are easier, and cheaper options.

lolz

 

[Disturban]

yes, when I want to put a new trans in it along with a new computer ill give you a call, then you, your son, and I can smoke some dope and come up with more dumb ideas. Wait, I would have to put a new gauge cluster in too to get a working spedo since this is my DD and its kinda nice to have. :thumb: Honestly I don't want to replace a perfectly good trans when there are easier, and cheaper options.

Now I am going to let you find out the hard way why I suggested a 700R4 :sonicjay:

PS: You would not need a new computer, you have a flashable ECM, Figure it out.

 

[kj kyle]

I dont think I can help, but their is a shit ton of talk about how they bypassed the VSS in this thread: 5.3 Jeeps - Pirate4x4.Com Bulletin Board

 

[Freak]

you will need a VSS on the output of the t-case. your problem is gonna be with the 4 low. the stock truck gets the 4 low input from the transfer case control module. there is no external source such as a switch on the tcase like older trucks had. your gonna be SOL on that part.

I am looking at putting it in the tail housing, yes my speedo will be off with roughly a 6:1 ratio, but it eliminates the need too hook up the 4 low sensor that wont work properly with the doubler anyway. I mean, really, do I need a speedo when I am in 4low? Having it on the output would make true 1:1 ratio so the trans would still have the correct shift points.

I dont think I can help, but their is a shit ton of talk about how they bypassed the VSS in this thread: 5.3 Jeeps - Pirate4x4.Com Bulletin Board

Lots of info man :thumb: looks like most people went with the tone ring on the output of the trans, according to mass adapters the tone ring on the rear of the tcase only works on pre 93 trucks. lots of stuff to look though though.

 

[Kodiak450r]

I am looking at putting it in the tail housing, yes my speedo will be off with roughly a 6:1 ratio, but it eliminates the need too hook up the 4 low sensor that wont work properly with the doubler anyway. I mean, really, do I need a speedo when I am in 4low? Having it on the output would make true 1:1 ratio so the trans would still have the correct shift points.



Lots of info man :thumb: looks like most people went with the tone ring on the output of the trans, according to mass adapters the tone ring on the rear of the tcase only works on pre 93 trucks. lots of stuff to look though though.

incorrect. your truck will not shift out of 1st gear unless it knows it's in 4 low. been there done that. happened on a 94 fullsize truck i worked on. the t-case range switch went bad. truck ran and drove good in 2 hi and 4 hi but when you put it in 4 low you would run all the way to the limiter and it would not ever shift out of 1st gear.

 

[Freak]

incorrect. your truck will not shift out of 1st gear unless it knows it's in 4 low. been there done that. happened on a 94 fullsize truck i worked on. the t-case range switch went bad. truck ran and drove good in 2 hi and 4 hi but when you put it in 4 low you would run all the way to the limiter and it would not ever shift out of 1st gear.

with the ring on the trans output I will need it always to think it's in high, if the sensor is in the tail shaft you have the gear reduction requiring lower speed shifts and my speedo will be way off when using the low gears in the tcase. Dose that make since?

 

[Kodiak450r]

well when you said tailhousing to me that means the output of the t-case. if your gonna put it in between the trans and t-case then yes that makes sense.

 

[Freak]

well when you said tailhousing to me that means the output of the t-case. if your gonna put it in between the trans and t-case then yes that makes sense.

:teehee: my bad
even if I get the kit to go on the tail housing of the 300 and hook up the low range switch it won't work when I use the doubler, at this point it only makes since to put it on the output of the trans.

 

[SHARPMACHINE]

:teehee: my bad
even if I get the kit to go on the tail housing of the 300 and hook up the low range switch it won't work when I use the doubler, at this point it only makes since to put it on the output of the trans.

From what I have understood (and am doing in my own build) you can run the vss in front of the t-cases without much trouble.

I made my own vss by pulling a ring from a np231c and installing it with a chevy pick-up, in front of my t-case in my tranny to t-case adapter. Of course, now I am re-doing it before it ever got done oke:. I need a shorter than stock adapter that can rotate my t-case to the right spot.

 

[Freak]

are you running the 4l6e or a 700? Did you just bore the ring out? How hard was it to get the sensor in the right place?

 

[SHARPMACHINE]

are you running the 4l6e or a 700? Did you just bore the ring out? How hard was it to get the sensor in the right place?

5.3/4l60e

I had to make a bushing for the ring to slide onto the 4l60e output shaft. Then put a very small tack weld on it to hold it in place.

 

[Freak]

5.3/4l60e

I had to make a bushing for the ring to slide onto the 4l60e output shaft. Then put a very small tack weld on it to hold it in place.

sweet, were you able to just drill a hole and tap it for the sensor?

 

[SHARPMACHINE]

sweet, were you able to just drill a hole and tap it for the sensor?

Yep, that is what I did.