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PostPosted: Wed Oct 05, 2016 9:12 pm 
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Joined: Sat Oct 01, 2016 8:32 pm
Posts: 8
Year and Trim: 1989 le & 1990 le
I have a 89 & 90 model bonnie but one of which the motor is gone and i have a free 97 old delta 88 that was just given but i was wondering if anyone of you guys could answer some questions? Could i just dumb the series II down to series I ie change the intake and sensors or would i have to use the whole computer ecu setup and the delta 88 has a motor the top end was just rebuilt or in a nutshell could i swap the heads off the Series II on to the series I im jusy trying to find the easiest rout to go given the LN3 in my 90 has blowed heads and close to 200k and the series II has 139k and some change. Im New here and i have a 89 le that ive owned for years and i havent had any issues with it like this but my 90 is my $250 project thats all i have invested in the car but im also on the hunt for taillight lens's for both car so if anyone's know where i could grab a set that would be alot of help. Thank you to inviting me to the page and if anyone can help it'd be much appreciated thanks


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PostPosted: Fri Oct 07, 2016 9:23 am 
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Certified Bonneville Nut
Certified Bonneville Nut
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Joined: Tue Aug 25, 2009 8:32 pm
Posts: 4505
Location: Dearborn, MI
Year and Trim: '93 SSEi
'05 STS-4
'97 Camaro
'97 LeSabre
In my opinion, you're better off taking the entire drivetrain (transmission and all) from the donor and swapping over. The only things you will really need to do are make a wiring adapter for the pass-through at the firewall and the main connector under the dash. I think if you have the donor you will have everything else you'll need as far as mounts and brackets and axles, pcm and harness, a free brake upgrade if you use the donor knuckle, etc.

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Blow all the things! Wait, I meant boost. Boost!
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Runs:
'93 Pontiac Bonneville SSEi - Twincharged, manual, and lots more! Build thread
'97 Chevy Camaro - 3800 supercharged, T5, T-tops
'05 Cadillac STS - V8, AWD, her DD
'92 Olds Trofeo - Fair weather DD
'84 GMC Sierra Classic - Twin turbo 3800
'97 Buick LeSabre - L67 winter DD
'92 Pontiac Bonneville SSE future project

Doesn't run:
'87 Buick LeSabre T-type - future victim
'67 Buick LeSabre - future victim


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PostPosted: Sat Oct 08, 2016 12:06 pm 
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LE Member

Joined: Sat Oct 01, 2016 8:32 pm
Posts: 8
Year and Trim: 1989 le & 1990 le
Don't sound hard but a big hassle but me and my father got to talking we think we could swap the heads and use the LN3 with series II heads. Would we just be able to do that? Given I need my car fast because my 85 el Camino is going under time to rebuild the motor in it and thanks for the info matt anymore would be greatful thank you!!


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