Just a short Vid of the last 01 to LLY swap we did. Still retains all LB7 electronics...
http://www.youtube.com/watch?v=P-cddN1Dv_A&feature=youtube_gdata_player
http://www.youtube.com/watch?v=P-cddN1Dv_A&feature=youtube_gdata_player
01 LB7 to LLY swap Vid
- Thread starter RPM Motorsports
- Start date
Very cool Russ. Either the information on LLY injector voltage is wrong (is it 95v or 48v?), or overdriving them doesnt seem to hurt them.
I would imagine they would work even if overdriven. They appear to be more or less a solenoid. I wonder if the extra voltage will eventually hurt anything?
Also, was there a reason the LLY FICM couldn't be used with the LB7 ECU? I seem to remember hearing it wouldn't work.
Sent from my Galaxy Nexus using Tapatalk 2
Iirc it's 48v., or close to it. We fired up an 01 4500 to LBZ swap (12v.) today. Time for the tuning fun to begin, and it's not fun... The LLY FICM would not work, different communication.
Your gonna have to catch that guy he just drove off with your hat under the hood :roflmao:
Looks like a very nice swap,id love to do this to mine at some point.What all is needed from the lly to swap? heads valve covers injectos and harnesses?
Looks like a very nice swap,id love to do this to mine at some point.What all is needed from the lly to swap? heads valve covers injectos and harnesses?
Looks good, I have complete lly sitting in the shop for this swap, when my injectors go again. I am curious about the longevity of the injectors with the higher voltage, as mine is a daily driver. I am looking for reliability.
Sent from my MK16a using Tapatalk 2
Sent from my MK16a using Tapatalk 2
This swap has about 6k mi. So far, and a couple more swaps have more. I got my hat before he closed the hood 
. If your not ready to sit there and tune for days straight, I don't recommend the swap. It's far from a drop in, plug N play. We are going to try out a hybrid harness on the next one, using two ECMs, Ect. Plan is to control the truck with the stock lb7, and run the motor as a stand alone. Hoping it makes the swaps less difficult/time consuming, we shall see.
. If your not ready to sit there and tune for days straight, I don't recommend the swap. It's far from a drop in, plug N play. We are going to try out a hybrid harness on the next one, using two ECMs, Ect. Plan is to control the truck with the stock lb7, and run the motor as a stand alone. Hoping it makes the swaps less difficult/time consuming, we shall see.
Last edited:
Is it still the LB7 turbo? I really like the Lb7 sound and mileage so being able to have external injectors in one would be great. Is this something that you will be able to sell the necessary tuning for in the future?
Yes, still the LB7 turbo. Honestly unless your really patient with tuning, it's a nightmare... Even with help from Rob, there's at least 15hrs sitting at a lap top.
Pardon my ignorance, but the tuning wouldn't be relatively close for all of 01/02 lb7 to lly conversions after the first one? It's at least 15-hrs everytime, period? If I keep my truck long enough for the injectors to get me, I'd strongly like to consider the LLY conversion.
That's the strange part lol. I figured the same thing and tried using a proven swap tune from a 2500 truck and applied it to a Kodiac, not even close. Truck to truck, not so much of a big deal. About ready to look into the Kodiac issue today. This is our first 4500 swap. So realistically if you already had one truck/tune figured out, it should be close.
x2. It took me forever to tune Juddski's truck with the big LLY injectors, running off an LB7 FICM and ECM.
Just getting it to start and idle would have been enough to probably discourage 95% of the people from doing this swap. Maybe it was the big injectors, I dont know. But it was a PITA to tune. Idle problems, random sputtering and missing at some loads/RPM's, dead RPM area around 2,100rpm that the engine would die for a second before picking up again, etc etc etc.
Once I got it figured out it was fine....but if I had to do it all over again, Id probably just use an LLY ECM and set it up as standalone, with an LLY FICM.
Who knows, the LLY ECM might even communicate properly with an 01-02 cluster?????? We all know that an 01-02 TCM will communicate properly with an 03-06 BCM and instrument cluster, so Id bet my lunch money you could wire in an LLY ECM to the Class 2 bus on an 01-02 truck and the instrument cluster would still work properly and display coolant temp, trans temp, and fuel level correctly. (the only class 2 info that 01-02 clusters use, the oil pressure and everything else on the 01-02 clusters is with discrete "old school" signals)
So Russ. I bet you wouldnt even need a hybrid setup with two ECM's and stuff. Remove the LB7 ECM alltogether...and try hooking up the Class 2 data wire from an LLY ECM into the Class 2 data wire(s) on an 01-02 truck.......the worst that will happen is it just wont communicate properly. Its not like its gonna fry anything, that Ill guarantee.
Class 2 is Class 2. J1850 VPW. Its the same databus specification/language on the 01-02 trucks as the 03-06 trucks. Its just used much more widespread and 3x the amount of body modules communicate on the common bus in the 03+ trucks.
ben
GMC_2002_Dmax
The Still Master
A Road Runner Ecm would have cut that down to two or three hours easily
ROAD RUNNER...........:thumb:
Im not going to spend the money on something that only works with an ECM that was put out to pasture 8 years ago.
:this was a one-time thing, tuning juddski's truck. I highly doubt Im ever going to come across such a rare setup ever again. And if I do, and Juddski's base tune that I made for his truck doesnt work, ill just send them to you.
Not worth my time/aggravation for such an oddball/unique/rare setup.
plus, everyone is moving to LBZ stuff anyways.
Sign me up, don't know much about RR! This Kodiac is kicking my ass, and I've got an 01 2500 to LBZ waiting to be fired up too.
So would it be alot easier to just use the LLY ECM and ficm and keep the Lb7 turbo and turn off the VVT stuff in the LLY ECM with EFI live?