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 Upgraded to 2.93 w/ G80 but forgot about speedo...

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emptyschmitz



Posts : 2
Join date : 2019-05-01

Upgraded to 2.93 w/ G80 but forgot about speedo... Empty
PostSubject: Upgraded to 2.93 w/ G80 but forgot about speedo...   Upgraded to 2.93 w/ G80 but forgot about speedo... Icon_minitimeMon Sep 23, 2019 10:59 am

So I upgraded my 96 RMW to the 2.93 w/ G80 LSD (original 2.56 open) and I love it! Only issue was I noticed I seemed to show a lot faster on the clock than it felt like I was going and I remembered...speed comes off the trans. Embarassed

I did a bit of homework last night and my choices are to either flash the ECM or POSSIBLY swap the ECM from a model with the V92 package. I don't know about that second option and I can't find anything to see if this has been done or has worked? I only can find info on the VSS gears for older models. Does anyone have any insight?
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silverfox103
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silverfox103

Posts : 3021
Join date : 2008-11-05
Age : 70
Location : Littleton, NH & St. Simons, GA

Upgraded to 2.93 w/ G80 but forgot about speedo... Empty
PostSubject: Re: Upgraded to 2.93 w/ G80 but forgot about speedo...   Upgraded to 2.93 w/ G80 but forgot about speedo... Icon_minitimeMon Sep 23, 2019 11:06 am

I've had the PCM reprogrammed for the exact same reason, worked great.

If you change the PCM itself, that will work also, but you have to make sure it's from a 1996 Roadmaster or Caprice with the 2.93 rear end.

Tom
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emptyschmitz



Posts : 2
Join date : 2019-05-01

Upgraded to 2.93 w/ G80 but forgot about speedo... Empty
PostSubject: Re: Upgraded to 2.93 w/ G80 but forgot about speedo...   Upgraded to 2.93 w/ G80 but forgot about speedo... Icon_minitimeMon Sep 23, 2019 11:17 am

silverfox103 wrote:
I've had the PCM reprogrammed for the exact same reason, worked great.

If you change the PCM itself, that will work also, but you have to make sure it's from a 1996 Roadmaster or Caprice with the 2.93 rear end.

Tom

Thank you Tom! I figured it had to be 96 only, just wasn't sure if the ECM swap would do it. I assume the wagon vs. sedan ECM doesn't matter?
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silverfox103
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silverfox103

Posts : 3021
Join date : 2008-11-05
Age : 70
Location : Littleton, NH & St. Simons, GA

Upgraded to 2.93 w/ G80 but forgot about speedo... Empty
PostSubject: Re: Upgraded to 2.93 w/ G80 but forgot about speedo...   Upgraded to 2.93 w/ G80 but forgot about speedo... Icon_minitimeMon Sep 23, 2019 11:49 am

emptyschmitz wrote:
silverfox103 wrote:
I've had the PCM reprogrammed for the exact same reason, worked great.

If you change the PCM itself, that will work also, but you have to make sure it's from a 1996 Roadmaster or Caprice with the 2.93 rear end.

Tom

Thank you Tom!  I figured it had to be 96 only, just wasn't sure if the ECM swap would do it.  I assume the wagon vs. sedan ECM doesn't matter?  

It shouldn't
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Upgraded to 2.93 w/ G80 but forgot about speedo... Empty
PostSubject: Re: Upgraded to 2.93 w/ G80 but forgot about speedo...   Upgraded to 2.93 w/ G80 but forgot about speedo... Icon_minitime

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