lb7 with lly heads

Troutfisher · 08-04-2012, 09:03 AM

I found some info on the internet about using lly heads and injectors on a 02 lb7 and using the lb7 ecm and ficm to run it using lb7 intake and turbo basicly just swapping heads and injectors and making a custom wiring harness from the ficm to the injectors and haveing the ecm retuned for the lly injectors has anyone else heard of this and has anyone tried doing it I am gathering up parts and going to try it just looking for some more info I have searched all over but can only find a couple threads about it.

Thanks Ed

blitzin247 · 12-01-2012, 04:15 PM

I've read about it too seems harder on the 01-02's though I don't remember why but on the 03-04 it's pretty much a head conversion and a few wires to splice a few lly fuel lines and efi live to tune it, retarding the timing and upping the flow rates iirc. How is your build going?

07keo02 · 12-01-2012, 04:20 PM

I know for sure the easiest way is to get heads, fuel system, wiring and Ecm. Then do emergency relearn and call it done. Someone definitely got it to work with lb7 electronics etc. though it was supposedly just really hard to tune. Someone needs to come out with a conversion package for sure. Seems lb7 heads could be machined for external injector placement or something.

RichieRich · 12-01-2012, 04:32 PM

Quote:

Originally Posted by 07keo02

I know for sure the easiest way is to get heads, fuel system, wiring and Ecm. Then do emergency relearn and call it done. Someone definitely got it to work with lb7 electronics etc. though it was supposedly just really hard to tune. Someone needs to come out with a conversion package for sure. Seems lb7 heads could be machined for external injector placement or something.

Paging Alligator Performance!

sparepartsracing · 12-01-2012, 04:44 PM

i am going to do this next summer with a motor built. Heads,engine wiring harness,injectors and you have yourself an lby lol. Talk to ben tyler if your really interested and he will get you everything you need for this swap to be painless.

juddski88 · 12-01-2012, 05:04 PM

I did it. the 01-02 wiring is the same as the 03-04 wiring if you decide to use lb7 electronics. I am 99% sure I could've used a lly ecm and ficm instead and made it work now after doing it, but only one other person had done what I did and I didn't feel like hacking up a bunch of stuff to have it not work. The easiest way to do it in a 03-04 truck is using lly ecm and ficm and harness. it is plug and play pretty much.

Troutfisher · 12-01-2012, 05:51 PM

I never could find enough info to be comfortable trying this so i just replaced my injectors for now still gathering parts and info to do this later

TexasRedNeck · 12-01-2012, 07:10 PM

I'm researching this as well. From what I can tell the 01-02 use a different language in the ECM and the 03 and 04 use the CAN network, which on the 03 and 04 it is as simple as plug and play with an emergency re-learn to swap the LLY into it. Not true with the 01-02, which is why you must use the LB7 ECM and FICU along with the turbo etc.

I'm also reading that you can use LLY injectors in an LBZ head, which means you might be able to run an LBZ with LLY injectors, LB7 turbo/intake, run off an LB7 ECM/FICU.

I'd really like to know from those who know: If you are going to build from a blank sheet in an 01 LB7: ......

Is the LBZ block stronger/better than the LB7 and LLY and it it worth it to use it and the bigger water pump with either the LLY heads and injectors, or the LBZ heads with LLY ijectors?

Which CP3 and regulator would you run in that combination?

I'd like to start building and engine over the next year to swap with the LB7 and would like to know the basic block/head/CP3 configuration is most ideal. Understanding that it must run LLY injectors and LB7 turbo and intake.

ferdkila · 12-01-2012, 07:20 PM

Quote:

Originally Posted by sparepartsracing

i am going to do this next summer with a motor built. Heads,engine wiring harness,injectors and you have yourself an lby lol. Talk to ben tyler if your really interested and he will get you everything you need for this swap to be painless.

I'm either doing this next week or swapping an lbz in. My injectors have finally toasted. No oil pressure and I just changed the oil so we all know what that means

Sent from my iPhone using AutoGuide.com App

blitzin247 · 12-01-2012, 08:19 PM

Wow I'm lovin the responses! So why is it best to swap out the lb7 ECM for the lly in 03-04, is it just better for the engine parameters and no special tuning needed?

08-04-2012, 09:03 AM	eBay Motors #1 (permalink)
Troutfisher Junior Member Join Date: Sep 2010 Location: Norfork,Arkansas Posts: 124	lb7 with lly heads I found some info on the internet about using lly heads and injectors on a 02 lb7 and using the lb7 ecm and ficm to run it using lb7 intake and turbo basicly just swapping heads and injectors and making a custom wiring harness from the ficm to the injectors and haveing the ecm retuned for the lly injectors has anyone else heard of this and has anyone tried doing it I am gathering up parts and going to try it just looking for some more info I have searched all over but can only find a couple threads about it. Thanks Ed __________________ 02 Chevy CC/SWB 2500 hd Duramax Allison Automatic,AFE stage 2 cold air intake, 150 Fass lift pump,Flo Pro turbo down pipe, Flo Pro 4 inch dual exhaust,modded intake horn,intake heater delete,Edge Insight CTS,Nicktane cat adapter,EFI by Rob Coddens

12-01-2012, 04:15 PM	eBay Motors #2 (permalink)
blitzin247 Senior Member Join Date: Oct 2012 Location: Everywhere Posts: 722	I've read about it too seems harder on the 01-02's though I don't remember why but on the 03-04 it's pretty much a head conversion and a few wires to splice a few lly fuel lines and efi live to tune it, retarding the timing and upping the flow rates iirc. How is your build going? __________________ Purchased 11/15/12: 2004 LB7 CCSB, ATS 4000 turbo, upgraded injectors, Diamond Eye 4 inch turbo back exhaust, H2's on 315/70/17's, Ranch hand front bumper. EFI LIVE by Kory Willis Purchased parts awaiting install: Moog problem solver lower ball joints, Moog pitman and idler arm, AD 165 Special thanks to: Brent@LDS, mrmanners@Synthetic Motorsports, and Kory Willis@PPEI. DMAXSTORE.COM, Your Duramax Diesel-Only Shopping Resource Jesus loves YOU, Have you asked Him to be your Savior yet?

12-01-2012, 04:20 PM	eBay Motors #3 (permalink)
07keo02 Senior Member Join Date: Feb 2012 Location: Dodge City, KS Posts: 325	I know for sure the easiest way is to get heads, fuel system, wiring and Ecm. Then do emergency relearn and call it done. Someone definitely got it to work with lb7 electronics etc. though it was supposedly just really hard to tune. Someone needs to come out with a conversion package for sure. Seems lb7 heads could be machined for external injector placement or something. __________________ 2003 Silverado 2500LS CCSB 4x4 ZF6 ------------------------------------------ EFI live with DSP5, Nicktane Aux Filter adapter and Filter head adapter with CAT water separator and 2 micron filter, Raptor 150 lift pump with check valve bypass, MA Engine Mounts and Trans Mount, MA Pump Rub Kit, SBC single disc, Straight pipe, Roadmaster active supension, Moog pitman/Idler/Support Bracket, Cognito support kit, Rare parts tie rods, Profab Turbo Horn, Intake heater delete, Kennedy high idle and airbox mod

12-01-2012, 04:44 PM	eBay Motors #5 (permalink)
sparepartsracing DuramaxForum Enthusiast Join Date: Aug 2009 Location: long island, ny Posts: 3,568	i am going to do this next summer with a motor built. Heads,engine wiring harness,injectors and you have yourself an lby lol. Talk to ben tyler if your really interested and he will get you everything you need for this swap to be painless. __________________ duramax- mild motor build,Custom s476 compound setup,Bt dieselworks trans,ATP tuned

12-01-2012, 05:04 PM	eBay Motors #6 (permalink)
juddski88 Junior Member Join Date: Sep 2010 Location: Freedom Diesel, Southampton, MA Posts: 88	I did it. the 01-02 wiring is the same as the 03-04 wiring if you decide to use lb7 electronics. I am 99% sure I could've used a lly ecm and ficm instead and made it work now after doing it, but only one other person had done what I did and I didn't feel like hacking up a bunch of stuff to have it not work. The easiest way to do it in a 03-04 truck is using lly ecm and ficm and harness. it is plug and play pretty much. __________________ 2001 ECSB Silverado HD SS- "Sore Subject"-LBZ block, DTS-ported LLY heads and Exergy Injectors, DTS cam, controlled by LB7 electronics, Big Dipper trans parts, raybestos clutches, built my me w/DPC custom converter, HTT Custom turbo, Pro-Fab long tube headers, custom wiring, custom exhaust, Aluminum Traction Bars, custom suspension, Setrab Fuel Cooler and 15gal fuel cell, CryO2, Custom Nitrous, Custom CM Roll Cage built by Dominator Race Fab and Diesel Performance, Custom Paint by Full Tilt Auto Body and Keith Brick Designs, custom H2's and some other stuff I am probably leaving out. Thanks to BT Dieselworks, DTS, HTT, Blackout Diesel Performance, Todd Greene, Evan, Kyle and all of my friends and family. Freedom Diesel

12-01-2012, 05:51 PM	eBay Motors #7 (permalink)
Troutfisher Junior Member Join Date: Sep 2010 Location: Norfork,Arkansas Posts: 124	I never could find enough info to be comfortable trying this so i just replaced my injectors for now still gathering parts and info to do this later __________________ 02 Chevy CC/SWB 2500 hd Duramax Allison Automatic,AFE stage 2 cold air intake, 150 Fass lift pump,Flo Pro turbo down pipe, Flo Pro 4 inch dual exhaust,modded intake horn,intake heater delete,Edge Insight CTS,Nicktane cat adapter,EFI by Rob Coddens

12-01-2012, 07:10 PM	eBay Motors #8 (permalink)
TexasRedNeck Junior Member Join Date: Sep 2012 Location: Houston, Texas Posts: 154	I'm researching this as well. From what I can tell the 01-02 use a different language in the ECM and the 03 and 04 use the CAN network, which on the 03 and 04 it is as simple as plug and play with an emergency re-learn to swap the LLY into it. Not true with the 01-02, which is why you must use the LB7 ECM and FICU along with the turbo etc. I'm also reading that you can use LLY injectors in an LBZ head, which means you might be able to run an LBZ with LLY injectors, LB7 turbo/intake, run off an LB7 ECM/FICU. I'd really like to know from those who know: If you are going to build from a blank sheet in an 01 LB7: ...... Is the LBZ block stronger/better than the LB7 and LLY and it it worth it to use it and the bigger water pump with either the LLY heads and injectors, or the LBZ heads with LLY ijectors? Which CP3 and regulator would you run in that combination? I'd like to start building and engine over the next year to swap with the LB7 and would like to know the basic block/head/CP3 configuration is most ideal. Understanding that it must run LLY injectors and LB7 turbo and intake. __________________ 2001 CCSB 6.0 Gas wtih 6 inch lift and 35s 2001 CCLWB Duramax with 12 inch lift and 37s & just added a Calvin's tranny with Kory Willis tuned EFI live and DSP5. Both red on charcoal http://i48.tinypic.com/30krtop.jpg

12-01-2012, 08:19 PM	eBay Motors #10 (permalink)
blitzin247 Senior Member Join Date: Oct 2012 Location: Everywhere Posts: 722	Wow I'm lovin the responses! So why is it best to swap out the lb7 ECM for the lly in 03-04, is it just better for the engine parameters and no special tuning needed? __________________ Purchased 11/15/12: 2004 LB7 CCSB, ATS 4000 turbo, upgraded injectors, Diamond Eye 4 inch turbo back exhaust, H2's on 315/70/17's, Ranch hand front bumper. EFI LIVE by Kory Willis Purchased parts awaiting install: Moog problem solver lower ball joints, Moog pitman and idler arm, AD 165 Special thanks to: Brent@LDS, mrmanners@Synthetic Motorsports, and Kory Willis@PPEI. DMAXSTORE.COM, Your Duramax Diesel-Only Shopping Resource Jesus loves YOU, Have you asked Him to be your Savior yet?

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