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What engine stuff do I need to change?

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Old Jan 31, 2002 | 05:33 AM
  #1  
ANDYZ28's Avatar
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From: Midlothian,VA. 23112-6108
Car: 1982 Z-28
Engine: 5.0 w/ Holly carb
Transmission: TH-700R4
What engine stuff do I need to change?

What engine "ECM" ect stuff do I need to change when I install a 3.42 rear in my '86 IROCZ that currently has the original 3.27 rear. I guess my speedo will be off also?

I am hoping I will only need to ghange the speedo driven gear?

Thanx,ANDYZ28
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Old Jan 31, 2002 | 07:46 AM
  #2  
RCR's Avatar
RCR
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Joined: Jul 1999
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From: Shelby Twp., Mi., USA
Car: '84 Fiero ('01 GA interior)
Engine: '96 4.0 Aurora
Transmission: '96 4T80E
Just change the speedo gear and you should be fine.
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Old Jan 31, 2002 | 11:30 AM
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ANDYZ28's Avatar
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From: Midlothian,VA. 23112-6108
Car: 1982 Z-28
Engine: 5.0 w/ Holly carb
Transmission: TH-700R4
Thanx
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