98 Camaro 5.3 swap
Thread Starter
Registered User
Joined: Feb 2025
Posts: 4
Likes: 0
98 Camaro 5.3 swap Hey all,
I'm swapping a 5.3 into my 98 Camaro. It will be running on an Aces Fuel injection system. Will I be able to retain the BCM and all of my accessories on the interior of the car or will I need to rewire it on a stand-alone style set up?
I'm swapping a 5.3 into my 98 Camaro. It will be running on an Aces Fuel injection system. Will I be able to retain the BCM and all of my accessories on the interior of the car or will I need to rewire it on a stand-alone style set up?
Moderator
Joined: Aug 2010
Posts: 7,323
Likes: 529
From: Ann Arbor, MI
Is this originally a V6 Camaro?
98 Camaros were their first year for the LS1 5.7 engine.
I have no idea, but I wonder if the V6 and V8 cars had very different harnesses and perhaps even BCM. If this was a V6 car, you might just need more V8 car parts.
98 Camaros were their first year for the LS1 5.7 engine.
I have no idea, but I wonder if the V6 and V8 cars had very different harnesses and perhaps even BCM. If this was a V6 car, you might just need more V8 car parts.
Thread Starter
Registered User
Joined: Feb 2025
Posts: 4
Likes: 0
It is originally a V6 car. I’m not sure why V6 or V8 would matter if I’m just trying to run it standalone. If it does I’ll custom wire it all from scratch. I was just trying to save myself some time if I could.
There was a thread on this recently from someone else.
I had a 1998 V6 Camaro, built only the Engine Wiring Harness, put a Walbro 255 Fuel Pump in it, used a C5 Corvette Regulator, and crammed in a 408ci LS Engine on the LS1 Cradle with a Built T56. Then tuned it to run hard. Everything worked no issues. Used a 2002 Fbody 0411 PCM. I did this back in 2010.
BCM is the same, Gauges are different in the V6 and V8 cars, the Fuse Box has one thing different between the V6 and V8 cars. I moved the one different Fuse and made it to spec for a V8 car.
Stand-alone is not needed when you say you're trying to "save yourself some time". Get the 1998 correct Sensors, wire it right, send it.
I had a 1998 V6 Camaro, built only the Engine Wiring Harness, put a Walbro 255 Fuel Pump in it, used a C5 Corvette Regulator, and crammed in a 408ci LS Engine on the LS1 Cradle with a Built T56. Then tuned it to run hard. Everything worked no issues. Used a 2002 Fbody 0411 PCM. I did this back in 2010.
BCM is the same, Gauges are different in the V6 and V8 cars, the Fuse Box has one thing different between the V6 and V8 cars. I moved the one different Fuse and made it to spec for a V8 car.
Stand-alone is not needed when you say you're trying to "save yourself some time". Get the 1998 correct Sensors, wire it right, send it.
Thread Starter
Registered User
Joined: Feb 2025
Posts: 4
Likes: 0
There was a thread on this recently from someone else.
I had a 1998 V6 Camaro, built only the Engine Wiring Harness, put a Walbro 255 Fuel Pump in it, used a C5 Corvette Regulator, and crammed in a 408ci LS Engine on the LS1 Cradle with a Built T56. Then tuned it to run hard. Everything worked no issues.
Stand-alone is not needed when you say you're trying to "save yourself some time". Get the 1998 correct Sensors, wire it right, send it.
I had a 1998 V6 Camaro, built only the Engine Wiring Harness, put a Walbro 255 Fuel Pump in it, used a C5 Corvette Regulator, and crammed in a 408ci LS Engine on the LS1 Cradle with a Built T56. Then tuned it to run hard. Everything worked no issues.
Stand-alone is not needed when you say you're trying to "save yourself some time". Get the 1998 correct Sensors, wire it right, send it.
Thread Starter
Registered User
Joined: Feb 2025
Posts: 4
Likes: 0
I’m confused why you are offended when you responded to my question by telling me to get the correct sensors for the motor and wire it correctly. I’m asking because I don’t know if the BCM and PCM work together and if one can work without the other. Maybe it is self explanatory but it’s also reasonable to ask a group who may already know the answer.
Trending Topics
Some people come in here thinking the LS Engine needs it's own special "Stand Alone" wired setup when swapping it into anything. I said what I said from what I've built and done. I like simplicity.
If you're set on that particular Aftermarket ECU & wiring for whatever reason you'll be fine with that 1998 car, it's all Analog. You'll just take some time installing it all.
BCM controls the car, that's it. You mentioned it above, nothing about that is Engine or Drivetrain related. Nothing goes to the BCM except maybe the Vehicle Speed signal wire that would go the Speedometer as well, it went to the BCM to give that signal to lock the Doors above a certain speed. That's if that car even did that. Security wire comes out of the VATS Module but not needed with something that's not GM stuff.
If you're set on that particular Aftermarket ECU & wiring for whatever reason you'll be fine with that 1998 car, it's all Analog. You'll just take some time installing it all.
BCM controls the car, that's it. You mentioned it above, nothing about that is Engine or Drivetrain related. Nothing goes to the BCM except maybe the Vehicle Speed signal wire that would go the Speedometer as well, it went to the BCM to give that signal to lock the Doors above a certain speed. That's if that car even did that. Security wire comes out of the VATS Module but not needed with something that's not GM stuff.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
TECH Regular
Joined: Dec 2022
Posts: 444
Likes: 158
Not sure about that year camaro but some of the body harness may be integrated in the engine /pcm harness like wipers, some gauges, horn and a/c stuff. So that stuff will need to be separated and re routed to keep them functional if stripping the rest out... if thats what you are referring to.
other than that the bcm and functions will still work without pcm
other than that the bcm and functions will still work without pcm
Moderator
Joined: Aug 2010
Posts: 7,323
Likes: 529
From: Ann Arbor, MI
First, lets please tone this down to a pleasant exchange of questions and answers.
I think that we learned that the only connection between the stock PCM and the BCM is Vehicle speed and this is a simple analog signal.
Therefore, any after-market ECU/PCM only need to connect it speedometer output to either the BCM or possibly directly to the speedometer.
Good to know that the BCM is the same, but that doesn't sound like that was even necessary. Sorry if I started this discussion on the wrong foot.
Good luck with your project. Please give us a few updates as you progress.
I think that we learned that the only connection between the stock PCM and the BCM is Vehicle speed and this is a simple analog signal.
Therefore, any after-market ECU/PCM only need to connect it speedometer output to either the BCM or possibly directly to the speedometer.
Good to know that the BCM is the same, but that doesn't sound like that was even necessary. Sorry if I started this discussion on the wrong foot.
Good luck with your project. Please give us a few updates as you progress.