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Old 09-09-2003, 08:28 PM
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S10 v8 swap-need help!

Has anyone heard about using a 2.8Ltbi ECM and wiring harness with a 350 tbi engine I am looking @ buying a truck that is running like that and it seems to work fine.

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Old 09-09-2003, 09:22 PM
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Hmmm, I didn`t know a ECM running 6 cylinders could run 8. where`s the other 2 cylinders getting there fuel from? how`s it know to advance the timing on 2 cylinders that it don`t know are even there? how about the fuel increase that is required for 177 more cubic inches? something smells here.
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Old 09-09-2003, 09:37 PM
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The only thing that has not been changed is the ecm everything else has been change. the ignition and all the sensors are for a v8
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Old 09-09-2003, 09:47 PM
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it`s still the same, the fuel table for the V8 and V6 are not the same, these are 2 different engines and they have a 177 cubic inches of difference and 2 more cylinders. as far as I know ECM`s aren`t interchangeable between different cubic inch engines and number of cylinders, if that was the case we could take a computer out of vettes and slap them in a geo to make them tire burners.
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Old 09-09-2003, 09:52 PM
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This is true but I know that you can use a 4.3L ecm to run a v8 with the right chips. I agree that the engine might not be getting as much fuel as it would with the right ecm but it runs just as good as any other swap I have seen.
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Old 09-09-2003, 10:32 PM
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We just put swapped a 350 for the 4.3 that was in my dads fullsize. It would run decent with the 4.3 chip but not perfectly so we had to have a chip burnt.

Some of the V8 full sizes and 4.3 S10s use the same ECM. The only difference is the Chip.
I've never heard of anyone running a V8 on a 2.8 ECM before though.
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