They will all run the motor. B body had PCM mounted left front under air filter box. Buick Raodmaster would have some extra connections to Climate control. You could use this to read codes etc... get temps, fan speed, pretty cool feature other guys wire into Impalas. Show me the plug and I may be able to identify it or find it in my manual. I have a 1994 LT1 Roadmaster, lots of fun to blow doors off stuff with a White Woodgrain Grandpas car!
The 1992 1993 LT1 PCM looks just like the old 1227727 which was an underhood weather proof version of the 1227730 they will all run MPFI, I don't know if any are sequential or if they have dual knock and dual heated O2 etc...
Yes I did that about 10-12 years ago and have made them for just about any motor made. Pretty slick setup as it has the EFI cap and rotor. If you look inside the cap and rotor you will see the magic GM made of channeling spark so no chance of misfire.
Have to be very careful with duraspark conversion invented by Custom EFIS years before anyone else claimed to be the inventor. EFI can handle so much spark advance in certain situations it can fire wrong cylinder (read above cap and rotor). Has burned up a few IH engines number 7 cylinder because of firing order. Very good setup though. Just have to be careful with initial spark setting and full advance settings, some guys set reluctor to gain a few degrees which is helpful till reluctor slips on shaft. Others like Jeep or Ford or whatever that came with Duraspark won't skip but can't gain the few degrees. Others set few degrees wrong direction because of distributor rotation. So have to be careful there.
Using the throttle body from LT1 would be cool! But may find it easier to do what JeepsandGuns did?
http://www.gearhead-efi.com/Fuel-Inj...Getting-closer...
One other thing to think of is OBDII software is EXPENSIVE!!! And you'll be getting rid of most of the stuff it was needed for. So your harness will work with work and plug into OBDI LT1 PCM, software and files are cheap. Tuning options are plentiful. But have to build an Optispark Hybrid. Or go down to 1227727-30 ECM for regular distributor. For now anyways I have never seen one done with regular distributor. But Dave runs an LS1 PCM with vortec distributor and a crank sensor he made. So just have to decide if you want simple and easy or go for something unique and cool.
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