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Old 03-26-2011, 07:16 PM   #1
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Default swappin 3.8 supercharged into a bonneville se

i have a 1999 buick gegal gs and i lost the tranny i also have a 1998 bonneville se and i was thinking about taken the 3.8 supercharged engine out of the buick and dropen it in the bonneville which is a basic se non supercharged is it a big job to swap like wireing and will the trans work
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Old 03-26-2011, 07:19 PM   #2
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The trans will work but dont expect it to last long..It would need to be upgraded with an HD diff axles and i beleive one other thing but i forget..I am not sure about all the wiring
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Old 03-26-2011, 07:22 PM   #3
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It will take some tuning and you will need to add a wire from the PCM to the boost control. ZZ performance sells the wiring kit to do this. But the tuning will take a bit more work. You need software like HPtuners, or know someone near by that has it. Where are you located? As for your transmission. I don't remember if you have a 4t65e or a 4t65e-HD Same transmission, but the diff is different, as well as the right side axle.
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Old 03-26-2011, 07:29 PM   #4
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i have the computter and allthe wireing from the buick to put into the bonneville
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Old 03-26-2011, 08:45 PM   #5
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i have the hd diff
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Old 03-26-2011, 08:48 PM   #6
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If you have the HD diff, then you have no problem there. So that leaves the boost control wire, and the tune.
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Old 03-26-2011, 09:31 PM   #7
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well if he uses the pcm from his "gegal" lol, it would make things easier
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Old 03-26-2011, 09:33 PM   #8
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Providing things in the dash all work out. Also some sensors may be different. It might, or might not work right.
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Old 03-27-2011, 11:55 AM   #9
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the dash in the regal is digatal and the dash in the bonneville is not but both cars have all the same optians
and i got a friend who is real good with wireing he has a crapaleir z24 with a twin turbo 3.4 in it he is helpn me wit the swap
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Old 03-27-2011, 11:57 AM   #10
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Would be interested in seeing the outcome. Take lots of pictures and post up your progress.
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