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Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 03-08-2006, 06:09 PM   #1
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Default Supercharger

I want to put an 1990'* sle, sse, or ssei supercharger in my 1989 bonneville sse. How would i do that what computer things need to be done and will it even fit?
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Old 03-08-2006, 06:11 PM   #2
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Old 03-08-2006, 06:34 PM   #3
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Old 03-08-2006, 08:00 PM   #4
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You'll have to swap the entire drivetrain. You can't just bolt up to an LN3.
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Old 03-08-2006, 08:34 PM   #5
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I turbo has been done on a LN3 tho..........so dont rule that out if you still want boost out of your current car
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Old 03-08-2006, 08:44 PM   #6
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By the time you have gone through it all it would have been easier and cheaper to do an engine swap...

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Old 03-08-2006, 08:51 PM   #7
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Quote:
Originally Posted by jr's3800
By the time you have gone through it all it would have been easier and cheaper to do an engine swap...
very true Don, I still believe that there is issues with the tuning of the car with the turbo
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Old 03-08-2006, 09:04 PM   #8
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Quote:
Originally Posted by 1993 SLE
Quote:
Originally Posted by jr's3800
By the time you have gone through it all it would have been easier and cheaper to do an engine swap...
very true Don, I still believe that there is issues with the tuning of the car with the turbo
I am a little off topic here... But that engine is a stock LN3 attached to a stock THM440-T4 transmission.. The Caddy 4.1 and 4.5'* that used that trans had a beefier torque converter.. Early on in the life of the THM440-T4 Caddilliac found that they were destroying torque converters behind the Caddy v8'*... They Later corrected that for the Caddy V8'*... The 3800'* kept the regular converter... Keep in mind that there were changes to the transmissions over the years, but they were cahnges more along the lines of durability as opposed to HP and Torque..

Ever notice the first SC'd 3800'* were attached to the 4T60-E HD? Same goes for the 91 4.9 Caddy engine it too was attached to that trans..

In the end I think it would be easier to swap in a 93-99 powertrain( supercharged )... At least that way you can have everything you need to do the swap... and you will be able to use the larger Axles and newer mounts, and even then do we know if the 89 Bonnie has the provision for the Torque Axis Mount? We know the 90 does... And I think the 91 will too as it used the new parts just like the 91 Park Avenues and 92 Bonnevilles...

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Old 03-09-2006, 10:54 AM   #9
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Default Supercharger

Well I was thinking of just putting a new engine and trany in, from a car with a supercharger.
The reason why is because my engine and trany has 190,000 miles on it. I know the engine and trany are still good for 60,000 miles but i can feel the trany slipping a little and the engine isn't acting up to par, so soon i am going to need a new engine anyway. And the extra miles i have left will give me time to save for the engine and trany.

I love this car... it was my mom'* untill i bought it form her. She said if i ever want to sell it I would have to sell it to her. My reply was " You are gonna have to rip it from my cold dead hands!" So I am willing to spend almost anything to fix my baby. I love the style the color I think it is the best looking bonneville ever do you agree??
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Old 03-09-2006, 10:57 AM   #10
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Default Re: Supercharger

Quote:
Originally Posted by Ace McDude
Well I was thinking of just putting a new engine and trany in, from a car with a supercharger.
The reason why is because my engine and trany has 190,000 miles on it. I know the engine and trany are still good for 60,000 miles but i can feel the trany slipping a little and the engine isn't acting up to par, so soon i am going to need a new engine anyway. And the extra miles i have left will give me time to save for the engine and trany.

I love this car... it was my mom'* untill i bought it form her. She said if i ever want to sell it I would have to sell it to her. My reply was " You are gonna have to rip it from my cold dead hands!" So I am willing to spend almost anything to fix my baby. I love the style the color I think it is the best looking bonneville ever do you agree??
Yes... Hence the reason I have 2 91'*

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