[Gmecm] converting 4cly distributor 1227808 to V8 DIS ignition.

[rawardsr]

Stop by www.thirdgen.org  DIY Prom board.

If your going to the hassle of a ECM swap, might as well and from the 
start use a 7749 from a Turbo Sunbird/GMC Typhoon, with OEM 2 bar code 
(mask $58), or hacked source code ( nicknamed $60) with available bins 
for 3 Bar. Note that in most cases a 7730 ECM can be subbed for the 
7749, so long as the injector wiring as used in a Typhoon (saturated 
injectors).

No good V8 dis swaps that I know of, however several peeps are looking 
into the Northstar V8 coil pack. I do know of a Grand National that 
regularly swaps between a 7749 and the original 148.

You can adapt the Ford dizzy to work with the GM ignition module, just 
lock out the advance.  I know you'd like DIS (mainly I'm sure to clear 
the supercharger snout), I just don't have that answer.

You can go DIS with any of the P4 ECM's, just need the right values in 
the bin.   Bob



Wayne Jones wrote:

> hi,
> i Am new to this list so please excuse the poor terminology i may use 
> and feel free to correct anything i say.
> I am from australia thus the '808 which is similar to the '165, i have 
> a computer from a holden camira which uses the same ECM as Astra and 
> some commodores.
> I want to use this computer on a Ford 351c engine with 671 
> supercharger pushing only small amout of boost. I plan to modify the 
> intake manifold to except injectors and was hoping to do away with the 
> dizzy in favour of a  distributor less ignition systems. (DIS??)
> The problems i face and hopfuly you can help with are:
> -Will this ECM do the job i have just described?
> - The ECM i purchased came from a distributor car wheres the same ECM 
> is used on distributor-less igition systems on the VN V6, wheres the 
> same commodore in V8 went back to distributor. In the FTP section 
> there is some wireing diagrams of the various ways this computer has 
> been used. I herd somewhere it is simple to convert distributor to DIS 
> by simply replacing the 6cyl coilpacks and module, with the same set 
> up from a v8 vehicle. Sound advice except we did not get a DIS V8 with 
> this ecm that i am aware of. i had a look at the  1227165 manuals but 
> they arnt the best ive seen plus do not know much between the 165 and 
> 808. I herd once that LT5 Corvette DFI Coilpaks can be used on v8's 
> that wish to use the 808?? What are my options?? Has anyone done this 
> before, or is there a "165 DIS that i can substitute the DFI from???
> - Can i simply wire the injectors the same way the V8 808 is wired or 
> would there be some underlying thing i have missed, (i have been led 
> to believe the computers on all the vehicles are identical just the 
> chip and loom and sensors was played with)
> - If i do change from Dizy to DIS will the engine still run or would 
> the chip programming be completly wrong, If the chip is an issue would 
> the corrections be difficult? In RT cat there is a slide bar which 
> allows you to change the number of cylinders, would i be best taking a 
> DFI V6 chip and increasing the cylinders, or correcting the spark 
> table of the V8 chip, would i even have to correct anything major? Is 
> it possible to use a 165 DFI chip if one exists??
> - Can someone please exlain what what "All use the 1227808 ECM which 
> is equivilant to Corvette's 1227165, but without U2 (the SXR chip), 
> limiting them to 160 baud ALDL data." What is baud Data is this the 
> amount of information a chip can store?? sorry i know this is a real 
> nebie questions.
> - Can anyone point me in the right direction for learning all the 
> obious sort of stuff so i do not have to ask stupid questions, i have 
> had a brief loook through the archives and am presently reformating 
> them into a more readable format and hopfuly a search function to be 
> placed on a webpage (if no one objects) Is there any good reading on 
> theP4 or delco systems to help me along ??
> i have plenty more questions but ill get these sorted first :)
> thanks in advance.
> -Jonesy-
>
> Why did the Co-Co Pops run away???
> Because they herd the Cereal Killer was coming!!!
>
>
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