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Not sure if this has been brought up before but I will anyways. I am doing my 5.3 and 4l60e swap and I found out that if you still want to use a manual transfer case you can use an eighties np208 transfer case. The spline counts are the same and so is the bolt pattern so it mounts up perfectly. Just thought I could see if I could help someone out.Travis
They do bolt up just fine, but you run into problems with the speed sensors. The old TBI speed sensor is just a 4 pulse and the 4L60e needs a 40 pulse to shift. We ran into this when we put a 97 Votec and 4L60e with a NP208 transfer case. The trans wouldnt shift until redline and then it would shift really hard. We ended up drilling and tapping the rear trans case and putting in a reluctor and speed sensor from Jags That Run, but the 99 4L60e out of mine is different in the rear so that sensor set up wont work. Back to the drawing board.
Hey thanks for letting me know that. So what all do I need to make this work? Do you have any part numbers?Thanks for the help.
Oh and my T-case was in an 85 so it wasnt TBI. I don't know if that will make a difference or not.
K guys I figured it out guys on the pre 87 pickups you must run an np241 transfer case out of either a 90 or 91 blazer. These will have the right speed sensor and will bolt up. Hope this helps someone out there.
I dont know what the part numbers are just yet, but a np241 speed sensor only has 4 pulse per driveshaft revolution. The LSX PCM needs to see a 40 pusle signal. I will see if I can get the part numbers but search for "Jags That Run" and they should be able to help you out. Someone also makes a driveshaft mounted VSS but that didnt sound like a great idea foe what we do with these trucks.
lol ugh this is frustrating. I talked to a few people and they said it would work. I wounder if you can switch out the sensor? You the driveshaft deal probably would work for me because of snow and such. Oh well more research.
wouldn't something like a Dakota Digital box be a lot easier and cheaper to do?
Thats what I have heard but I couldn't find it. This is turning into kind of a headache and I almost wish I would have just used a 700r4.
do you have pass side drive shaft or driver side front drive shaft, my 87 k-5 has pass side, am hoping to use the 208 transfer case in it now, with my 5.3 4l60, i thing advance adpt , has a ring and sensor that you can install and make it all work
Thanks I will have to check that out.
My 05' silverado had a manual 4wd shifter. It was the base model with the 4.8. Find one of these and you don't have to piss around with wiring and sensors.
Wouldnt that have the driver side drop though? I need a passenger side drop.
Sorry, didn't see that part.
We tried to a Dakota Digital box on the last truck and it wouldnt work. We were told by Dakota Digital that no company makes a converter box to multiply the 4 pulse to a 40 pulse signal.
Here is what I would do (because as far as I can tell the sensor adapter we used in the 1997 5.7 4L60e wont work in the 1999 5.3 4L60e) is to buy a obs 4L60e and adapt it to the engine then drill and tap the speed sensor from Jags That Run. Or scrap the 4L60e all together and run the 700R4, but I think that you would be happier with the 4L60e in the long run.
Oh yeah, here is the one that we used and it turned out great for the 1997 Vortec 5.7, 4L60e, and NP208 transfer case into a K5 Blazer.
V-8 Vehicle Speed Sensors, 4L60-E Reluctor Ring, V8 Conversions, Stealth Conversions
Hope this helps some.
Thanks muddyjimmy i might try that one
I would call or email BakerElectronix and tell him what your needs are. He builds and designs all the items he sells and writes the programming. He can probably build you what you need and if there is any market for them he will put them on his website for sale afterwards. :thumb:
anyone swapped the 4l80e in?
Im wanting to do a 6.0l swap in my 91 4x4, I have swapped a th350 in for now but not sure how all that would work with the 6.0l swap.
Hey whats up guys? I'm new to to this forum and I've been reading alot of great stuff on here, my new favorite home lol Anyway, my dad and I are putting a 6.0L LQ4 and 4L80E out of a 2000 Silverado 2500HD 3/4 ton in my 1984 GMC Sierra Classic 3/4 ton. I'm finding I have that same problem, transmission won't shift at all past about 45 MPH. I've found out I HAVE to do the dual speed sensor setup to get the right pulse output. I got one of those pulse generators that screw onto the back of the speedo, only a 4 pulse. Only thing I can see working on my setup. BUT when I bought the engine and transmission, for some reason the guy I bought it from (off Craigslist) included the original NP241 transfer case with it, so I'm gonna try and use the reluctor ring and speed sensors off that to make my 4L80E work. So, anyone wanna buy a NP241 t-case??? hahaha
wow what a bonus lol i had to pay for mine. do you have a the computer out of the 2000 silverado?
Oh yeah PCM came with it. Had almost all of the wiring harness too. Was only missing a few connectors here and there but figured out which ones pretty quick. Been piecing it together since March and its just now almost done lol I just got my PCM back in the mail today. I'm pretty jacked about that. I actually had to send it back to the guy who programmed it for me again. The first program I had done (my guess being) I erased it all with my Superchips tuner hahaha So if you get a Superchips Flashpaq Tuner after having VATS deprogrammed out of it, be careful with what your doing, I learned the hard way. Anyway, it runs great, I absolutely LOVE how it sounds! I'm only running 2 1/4" piping with Dynamax mufflers but damn it sounds great. A close second is my "custom" cold air intake. It goes like this in this order: throttle body, MAF sensor, massive cone air filter. LOL It whistles and hisses just enough so it sounds like a turbo, its really a great thing. I'll post a video up one of these days after I fix my VSS problem.
Hey Podunk. My wife and I vacation up in Boise and around Idaho in general. Been up there a half dozen times or so. Anyway, just thought I'd say hey. Hoping to be living up there someday. If so I'll have the truck with me. I'll look forward to making a few runs. Would like to take it to Firebird...
Anyway, just thought I'd say hey. Don't see many people from Idaho.
Right on! Its good to talk to people who know the area. Idaho is a really beautiful state, many people don't realize that. Yeah Firebird is definitely one of my first stops after my truck is all said and done. I'm hoping to be in the neighborhood of 345 hp after I (correctly) tune it. Where about are ya from and what brings you to Idaho?Quote:
Originally Posted by DamnYankee
There's a website called findyourspot.com. You fill out a bunch of stuff and it gives your recommendations as to what areas are a good fit for you. I like hiking and outdoor activities, mountains, etc. Wifey likes shopping and decent restaurants. So Boise was one of the areas it recommended.
Really? Never heard of it but I'll look at it sometime.
Just bumping this thread......I'm starting to plan a 5.3/6.0 swap in a 90' 4x4 Suburban. I've been toying with the idea of just running a Ford Dana 60 with a driver side drop and not worrying about the speed sensor. Plus the bonus of 1-ton axles.
If anyone has any new insight or ideas....I'm buying....:beerchug:
Im running an 05 lq4 with the 4l80 and and np243 without any speed sensor problems. From what Ive read the Tbi engines did have a 40 pulse sensor.
Not to bring up old posts, but I want to second this one. Boise ROCKS!!!!!! I never thought I would say that, but after being there twice in the last year I dig it. I was there in July for 2 weeks, then again in April for 3 days. I did get snowed on this last time, it sucked. I was working on an airplane for 6 hrs in the damn snow.Quote:
Originally Posted by DamnYankee
So, im trying to understand this. I have an 86 k5 factory v8 700r4 np208 i wanted to swap a 5.3 or 6.0 with a 4l60e, hopefully into stock location and not have to move transfer case or cut axles, and this 4 pulse verses 40 pulse is confusing me.
What all work is there to bolt the 4l60e to the np208 and get it to work and shift correctly? Is the reculator ring in the back of the trans then? Trying to understand all this.
Im pre tbi or fuel injection, and planned on just running a vette style regulator and possibly a 87-91 blazer tank that had factory efi with a different fuel pump.
Im hoping to keep it stock location as stated before, if i gotta start dealing with driveshafts and corssmembers, just gonna do a 4l80e mid 80s np205 and a 3/4ton running gear.
The ring is located in the transfer case in 4x4 setups and in the trans on 2wds. I think if you could find an np241 of a 88?-91 blazer or suburban you can keep the passenger side drop and still have the right pulses. Atleast thats what Ive learned in my studing. Im sure theres other ways around changing transfer cases maybe the reluctor ring kit from jags that run?Quote:
Originally Posted by KansasTwister