3.4 swapping rearends... pcm swap also? 1995 - LS1TECH

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3.4 swapping rearends... pcm swap also? 1995

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Old 06-10-2008, 03:09 PM   #1
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Default 3.4 swapping rearends... pcm swap also? 1995

My girlfriends got a 1995 3.4 v6, she has 3.08 gears, I want to swap in a 3.42 off of the junkyard, but cant find a way to calibrate the shifts/speedo. What about swapping a 3.42 geared v6 pcm into the car? Would that fix the speedo? Or who does do 3.4 tuning? Cant seem to find anyone
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Old 06-10-2008, 09:09 PM   #2
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there were no 3.42 geared 3.4l v6's made you are out of luck there and 3.4's are all OBD1 so nobody will touch them.
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Old 06-10-2008, 10:53 PM   #3
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even the y87 coded cars? doh >< supposely this guy on ebay that sells pcm says he can sell me a flashed pcm for the gearing i chose wiht gm flash machine he has, he said 125$
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Old 06-11-2008, 11:22 PM   #4
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Nope.. There was no Y87 option on v6's during the 3.4l years. All 3.4l's had drum brakes, open rearends, and 3.08 gears.
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Old 06-12-2008, 03:50 AM   #5
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well i found 2 tuning shops who said they can flash it online for about 120$ they can do shift points and regearing tune
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Old 06-12-2008, 09:41 AM   #6
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Quote:
Originally Posted by eddielb View Post
well i found 2 tuning shops who said they can flash it online for about 120$ they can do shift points and regearing tune
With what software?
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Old 06-12-2008, 10:44 AM   #7
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i have to ship out my computer and they will flash it on their "gm" bench, said it changes vin numbers etc, ecm something is what its called over on ebay

if I was closer to them id be able to get a dyno tune
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Old 06-12-2008, 10:44 AM
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