E38 DBC for Boat
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Teching In
Joined: Jun 2021
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E38 DBC for Boat So it’s an old question in a new way.
anyone know if you can convert a gen 4 harness with the E38 pcm to run dbc? I have a gen 4 LS (LMG?). It’s a 58x/4x 5.3L. It looks like the pins are there and if you swapped the wires into the connectors and programmed the pcm it might work, maybe? I’m referring to the J2 connector pins 3, 5, 6. I’ve finished rebuild and found this problem. I was originally going to run Holley terminator x but you can’t get one for nothing right now.
My only other option I see is to get a ligenfelter trg-002 (converts 58x/4x to work on 24x/1x harnesses and pcms), get a LS1 harness (blue/red connectors) make it a stand alone and get a compatible pcm. Part numbers or suggestions appreciated.
the engine has a coupler bolted to flywheel and a splined shaft slides in to drive the bravo 3 outdrive. No trans etc. there is a mechanical shifter cable to change fwd to rev in the outdrive for those who are curious (no electronics involved).
I put a call and email into Brendan at lt1swap but was hoping you guys might know or point me in right direction. This is kind of different from what I searched here.
anyone know if you can convert a gen 4 harness with the E38 pcm to run dbc? I have a gen 4 LS (LMG?). It’s a 58x/4x 5.3L. It looks like the pins are there and if you swapped the wires into the connectors and programmed the pcm it might work, maybe? I’m referring to the J2 connector pins 3, 5, 6. I’ve finished rebuild and found this problem. I was originally going to run Holley terminator x but you can’t get one for nothing right now.
My only other option I see is to get a ligenfelter trg-002 (converts 58x/4x to work on 24x/1x harnesses and pcms), get a LS1 harness (blue/red connectors) make it a stand alone and get a compatible pcm. Part numbers or suggestions appreciated.
the engine has a coupler bolted to flywheel and a splined shaft slides in to drive the bravo 3 outdrive. No trans etc. there is a mechanical shifter cable to change fwd to rev in the outdrive for those who are curious (no electronics involved).
I put a call and email into Brendan at lt1swap but was hoping you guys might know or point me in right direction. This is kind of different from what I searched here.
Thread Starter
Teching In
Joined: Jun 2021
Posts: 36
Likes: 6
Ok so utilizing the pins is not possible is your answer? It appears on pin diagram that functionality is there and has to be somehow for dbw to work. The question is can the pcm handle seeing it differently? I’ll say I’m 99% sure this won’t work.
but what about switching to a dbc TB? Then converting with ligenfelter trg-002, LS1 harness and a pcm…
but what about switching to a dbc TB? Then converting with ligenfelter trg-002, LS1 harness and a pcm…
Thread Starter
Teching In
Joined: Jun 2021
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I don’t see how… the throttle controllers are vastly different. Everything would be me inventing something that’s just not reliable. I’d rather turn myself inside out on wiring vs a control thats not proven or designed for salt water environment. I’ve spoke to various vendors of potentiometers none of them recommend this. Dbc is the the old reliable. I’m going 15-20 miles offshore in serious conditions. There is no uscg on my island, if something happens you’ll be out there overnight minimum. No risks can be taken when you got families and kids on board.
In 24 years of DBW operation in cars - never a failure. In 26 years of cable operated carbs/throttle bodies - 2 broken cables. ‘Course - I reckon in that case you could have a family member operate the throttle…
If you must have a cable, I think you’ll need a DBC throttle body, computer and harness and the 58x to 24x adapter.
If you must have a cable, I think you’ll need a DBC throttle body, computer and harness and the 58x to 24x adapter.
Joined: Mar 2010
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From: Vancouver area, West coast Canada
If you want ultimate reliability, I wouldnt be putting that 58-24 conversion box in there.
Get a 24x crank wheel or an aftermarket EFI. Marine engines are so simple I'd megasquirt the thing. Where do you plan to put the Ox sensor, which the Holley depends on ?
Also, There are electric based marine throttle levers out there, All the bigger boats use them. If you really really want to get to basics you could run a carb and MSD ignition box.
Get a 24x crank wheel or an aftermarket EFI. Marine engines are so simple I'd megasquirt the thing. Where do you plan to put the Ox sensor, which the Holley depends on ?
Also, There are electric based marine throttle levers out there, All the bigger boats use them. If you really really want to get to basics you could run a carb and MSD ignition box.
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Thread Starter
Teching In
Joined: Jun 2021
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If you want ultimate reliability, I wouldnt be putting that 58-24 conversion box in there.
Get a 24x crank wheel or an aftermarket EFI. Marine engines are so simple I'd megasquirt the thing. Where do you plan to put the Ox sensor, which the Holley depends on ?
Also, There are electric based marine throttle levers out there, All the bigger boats use them. If you really really want to get to basics you could run a carb and MSD ignition box.
Get a 24x crank wheel or an aftermarket EFI. Marine engines are so simple I'd megasquirt the thing. Where do you plan to put the Ox sensor, which the Holley depends on ?
Also, There are electric based marine throttle levers out there, All the bigger boats use them. If you really really want to get to basics you could run a carb and MSD ignition box.
yeah I suppose I could do msd box and carb. but I really wanted to keep my tbss… I’m aware I could spend thousands and get solutions but if I wanted to drop that coin I wouldn’t be doing this. There are foot pedals out there but that isn’t ideal for trolling. I have a twin lever controller I really like.
Last edited by xcomunic8d; Aug 27, 2021 at 10:17 PM.
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Verdad Gallardo Thread Starter
Teching In
Joined: Jun 2021
Posts: 36
Likes: 6
In 24 years of DBW operation in cars - never a failure. In 26 years of cable operated carbs/throttle bodies - 2 broken cables. ‘Course - I reckon in that case you could have a family member operate the throttle…
If you must have a cable, I think you’ll need a DBC throttle body, computer and harness and the 58x to 24x adapter.
If you must have a cable, I think you’ll need a DBC throttle body, computer and harness and the 58x to 24x adapter.
btw I do have the dbc tb, I’m scratching my head now to make a work with b at the moment.