6.0 swap into 1990 RCSB
Picked up a donor truck with a 6.0 litre with 72k on the ticker. Gonna swap into my RCSB. I am going to buy a harness and ECU. Give me your thoughts on your guys past experiences . I am down to 2 companies Fitech standalone ECU and harness and Holley Terminator X Max harness and ECU.
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Re: 6.0 swap into 1990 RCSB
Holley is 10x better than FiTech. Every FiTech product I’ve used has been garbage. Also, hope you have a plan to wire up the factory gauge cluster or getting an aftermarket cluster. About 85% of LS swaps done on OBS trucks are half-assed and the clusters don’t even work. Take your time and do it right.
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Re: 6.0 swap into 1990 RCSB
EVRLET... Thanks for the info.. The more I read about these 2 the more Fitech bad stories come out. I am going to go with the Holley.
I am definitely gonna have a proper working set of gauges. That would drive me crazy to not have proper working cluster. I am to that point in my life where a few extra dollars to do it right is the way to go. I will post pictures as I go through the process. |
Re: 6.0 swap into 1990 RCSB
having ran the fitech...it wasnt as user friendly as i would have liked.
it didnt just take as stated...it needed some tweaking, and to my knowledge the now current owner cannot find any willing to really play with tuning it. i still converse with him suggesting ideas and waiting for feedback. |
Re: 6.0 swap into 1990 RCSB
Thanks for the info on the Fitech.. There is probably a reason why Holley has been around for so long...
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Re: 6.0 swap into 1990 RCSB
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Spent some time on Sunday getting the 6.0 out of the donor truck.
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Re: 6.0 swap into 1990 RCSB
100x more technical support behind Holleys products. If you encounter an issue w/FiTech, you're stuck w/them. Holley products have many tuners outside of Holley if the tech help @ Holley isn't enough.
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Re: 6.0 swap into 1990 RCSB
Since you have the whole donor why not stick with the GM PCM?
A little more time but no parts in the system to fail after they are obsolete when you can't source them easily in a salvage yard. There are a lot of guys tuning them. Supposedly you can tune them with TunerPro if you don't want to pay for HP Tuners or something similar. http://www.gearhead-efi.com/Fuel-Inj...ed-is-TunerPro If you're using the 6.0 with a manual transmission or an old school automatic you can program the PCM to a stock GM flash image with an MDI or Tech 2 and AC Delco TIS single VIN subscription using a manual transmission VIN. Delco doesn't have to know the whole story nor should they. Once you have the stock GM program in the PCM as a baseline you can save that baseline stock flash image to your laptop hard drive or a thumb drive with your tuning package and modify it knowing you can always go back to bone stock if needed. 1GCHC23U22F172096 is a 2002 2wd crew cab 2500HD 6.0 Manual Transmission DPW fleet truck VIN from a truck that was long ago recycled. |
Re: 6.0 swap into 1990 RCSB
there is a forum for the fitech...but it is a private individual who of course needs funding...so you have to pay to really have any assistance.
next go, my choice will be a holley product for sure. |
Re: 6.0 swap into 1990 RCSB
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Re: 6.0 swap into 1990 RCSB
I have HP tuners and have tuned several PCMs. I will say factory PCMs are decent at best. I have bricked a few of them. When I spoke to HP Tuners at SEMA last year, they said you can’t predict how many times a PCM can be rewritten. The circuit boards are 10-20 years old and while some can be retuned 100s of times, some may only be retuned a few times. HP Tuners won’t give you a new PCM if you end up bricking it.
All in all I still mess with HP Tuners but for builds like yours, the standalone is, in my opinion, the way to go. For those on a budget and don’t want to spend the $1k and up for a stand-alone, factory PCMs will get you started but I would recommend upgrading to a stand alone somewhere down the road. |
Re: 6.0 swap into 1990 RCSB
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If you have the hot air soldering equipment you can float the flash chips off a PCM board and install new ones. They're a lot more robust than your garden variety Apple or Sony product. I've replaced the flash chips on more than one mid 90's LT1 ECM. Several times I just flashed the same old AMD flash chips with an EPROM burner and re-installed them. |
Re: 6.0 swap into 1990 RCSB
HP Tuners said it’s not just a chip issue that causes bricking. You have circuit board material, the wires itself, voltage regulations in the entire vehicle system, etc. I could careless about bricking because I have a pic a part here that has all the PCMs I need to replace. However other people in the country doesn’t have the luxury of a endless supply like I do.
There are plenty of “circuitry” issues with GM trucks. The NBS cluster is a good example. While resoldering is a common fix, there are other issues dealing with circuit board runs, circuit board components, chips, incorrect input voltages, etc. The cluster does nowhere near the many things the PCM does. Plus the constant heat cycle of the PCM from being in the engine bay for NBS trucks makes them susceptible to electronic problems. That why PCMs can be bricked and a simple chip replacement won’t fix it. |
Re: 6.0 swap into 1990 RCSB
Outside of the poor quality stepper motors and tungsten filament bulbs...
Cracking solder joints on the banks of SMT resistors and dodgy voltage regulators are the most common failure points I've found on the T800 clusters. And the ham handed amateur repair attempts. There are a few other issues that occasionally rear their ugly heads but they are not common. Bricking during a flash has usually happened because of voltage sagging. It corrupts the flash and the PCM freaks out. Sometimes you can lie to TIS and tell the software you're flashing a new device. I have yet to get into a PCM ECM, that didn't present actual physical board damage, that I couldn't coerce back to life. All bets are off on scorched boards from burned components. I've resurrected one but usually they are just dead dead dead. 8-) |
Re: 6.0 swap into 1990 RCSB
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Here are some pics of the slow progress of the LS swap. Touched up the firewall with new paint. De-greased the front end and ready for paint. Found some factory color paint markings on the suspension.
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Re: 6.0 swap into 1990 RCSB
Has anyone done a swap with a drive by wire. Looking for the easiest gas pedal to fit the obs. Since I will be using a Holley Terminator X max the pedal needs the 6 pin connector ( not the 8 pin that came with the truck motor).
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