Ligenfelter crank trigger conversion - The 1947 - Present Chevrolet & GMC Truck Message Board Network

elimontfort · 09-30-2014, 06:40 PM

http://www.lingenfelter.com/mm5/merc...3#.VCswFsu9KSM

Why would you need to run this on a swap? I see what it is for but if your are running a stock gm ECM that would negat the need for the conversion box correct? I'm assuming this is for someone running a 4.8 on a 5.3 ECM or vice versa?

ls1nova71 · 09-30-2014, 07:53 PM

Quote:

Originally Posted by elimontfort

http://www.lingenfelter.com/mm5/merc...3#.VCswFsu9KSM

Why would you need to run this on a swap? I see what it is for but if your are running a stock gm ECM that would negat the need for the conversion box correct? I'm assuming this is for someone running a 4.8 on a 5.3 ECM or vice versa?

It's for running a newer engine with an older PCM. Its easier than changing reluctors on the crank. I have heard there have been reliability problems with them though.

elimontfort · 09-30-2014, 08:05 PM

That's what I thought. I'm currently doing a lq9/4l80 swap on mine. I was looking at a buddies 74 jeep that he did the 5.3/4l65 swap on and he was running that. But he is using stock management so just kinda made me think why? He had a shop do it and they told him he needed it.

littlevictories · 10-01-2014, 11:00 AM

i was following a thread on HPT forums where it looks like they were gonna add code to make the switch in the OS, but it dead-ended.

about your buddies swap: i dunno why they wanted the box. maybe they needed to make a DBC OS work? I met a local guy that did just that…but he was getting ready to swap reluctors b/c the lingenfelter box was a turd. Caused multiple fails per week in his 5.3 swapped toyota wagon.

elimontfort · 10-01-2014, 11:45 AM

yeah thats what he his running but they can program that out correct? or use a dbc computer.

ls1nova71 · 10-01-2014, 12:43 PM

Quote:

Originally Posted by elimontfort

yeah thats what he his running but they can program that out correct? or use a dbc computer.

There are no DBC Gen4 applications, so if he was running a 2008-up 5.3, and wanted to run DBC, that's why they used it, hes running a Gen3 PCM with a DBC tune. You cannot tune the DBW out of the newer ECMs.

elimontfort · 10-01-2014, 12:45 PM

thats what i figured but you cant write that out of the PCM? just payed attention to the end of the post nevermind. thanks guys for the info.

littlevictories · 10-01-2014, 04:02 PM

so the takeaway here is if you have gen4 and want to do a DBC, the best fix is to change the reluctor wheel.

correct me if i'm wrong. thanks.

09-30-2014, 06:40 PM	#1
elimontfort Registered User Join Date: Jun 2011 Location: Sunbury, N.C Posts: 140	Ligenfelter crank trigger conversion http://www.lingenfelter.com/mm5/merc...3#.VCswFsu9KSM Why would you need to run this on a swap? I see what it is for but if your are running a stock gm ECM that would negat the need for the conversion box correct? I'm assuming this is for someone running a 4.8 on a 5.3 ECM or vice versa?

09-30-2014, 08:05 PM	#3
elimontfort Registered User Join Date: Jun 2011 Location: Sunbury, N.C Posts: 140	Re: Ligenfelter crank trigger conversion That's what I thought. I'm currently doing a lq9/4l80 swap on mine. I was looking at a buddies 74 jeep that he did the 5.3/4l65 swap on and he was running that. But he is using stock management so just kinda made me think why? He had a shop do it and they told him he needed it.

10-01-2014, 11:00 AM	#4
littlevictories Registered User Join Date: Dec 2013 Location: Portland, Ore. Posts: 348	Re: Ligenfelter crank trigger conversion i was following a thread on HPT forums where it looks like they were gonna add code to make the switch in the OS, but it dead-ended. about your buddies swap: i dunno why they wanted the box. maybe they needed to make a DBC OS work? I met a local guy that did just that…but he was getting ready to swap reluctors b/c the lingenfelter box was a turd. Caused multiple fails per week in his 5.3 swapped toyota wagon.

10-01-2014, 11:45 AM	#5
elimontfort Registered User Join Date: Jun 2011 Location: Sunbury, N.C Posts: 140	Re: Ligenfelter crank trigger conversion yeah thats what he his running but they can program that out correct? or use a dbc computer.

10-01-2014, 12:45 PM	#7
elimontfort Registered User Join Date: Jun 2011 Location: Sunbury, N.C Posts: 140	Re: Ligenfelter crank trigger conversion thats what i figured but you cant write that out of the PCM? just payed attention to the end of the post nevermind. thanks guys for the info. Last edited by elimontfort; 10-01-2014 at 12:50 PM.

10-01-2014, 04:02 PM	#8
littlevictories Registered User Join Date: Dec 2013 Location: Portland, Ore. Posts: 348	Re: Ligenfelter crank trigger conversion so the takeaway here is if you have gen4 and want to do a DBC, the best fix is to change the reluctor wheel. correct me if i'm wrong. thanks.



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