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Old 02-11-2003, 12:20 AM   #1
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Default First mods and SC questions

hello Members and Friends ,

I have a 97 bonneville w/91,000 on it. The motor and tranny was replaced @ 72,000. What should be the first mods I do to it? Also need to know if I can put a SC on a 3.8 Series II non SC motor?? I have been reading alot of posts and I know there is alot of knowledge in here to help me with my project!! This car is my daily driver and showcar. Thank'* in advance.
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Old 02-11-2003, 01:29 AM   #2
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Default Re: First mods and SC questions

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Originally Posted by Jeffrey M. Castleberry
hello Members and Friends ,

I have a 97 bonneville w/91,000 on it. The motor and tranny was replaced @ 72,000. What should be the first mods I do to it? Also need to know if I can put a SC on a 3.8 Series II non SC motor?? I have been reading alot of posts and I know there is alot of knowledge in here to help me with my project!! This car is my daily driver and showcar. Thank'* in advance.
Read the announcement at the top of this forum for a link to the 'first mods' tech article.

Then while you're in Techinfo, read the article that says "can I supercharge my se or sse?"

Start thinking Turbo or NOS.
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Old 02-11-2003, 01:53 AM   #3
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Centrifugal SC
Turbo

Any questions e-mail me.

Ty
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Old 02-11-2003, 09:37 AM   #4
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The NA 3800 CAN BE SC"d after all! It depends on the Year & Series (I or II)!
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Old 02-11-2003, 11:25 AM   #5
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The sc for the series II already exists, but the series I is in need of mounting hardware changes. Not a big deal really. There had been Turbo kits for the series II for a while now but they were mild and the engine used its plastic upper intake. LOL not a good combo. Having a new Upper intake made is required for a Turbo and new headers are required. This is all good but the modifications for a Turbo or SC are the main reason the choices are made for either. Personally the upper intake (plastic) has to be replaced regardless.

Ty
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Old 02-11-2003, 02:40 PM   #6
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I'll clarify my reply. Most people ask this question hoping they can pull an M62 or an M90 and bolt it up to their non-supercharged lower intake. It can't be done.

The turbo and centrifugal SC are both options, but bidding starts VERY high. Both would be aftermarket options.
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Old 02-11-2003, 05:01 PM   #7
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Default SC questions

With me being new to bonnevilles What is the term (NA) for the 3800'*??

What kind of SC is on the SSEI? If I use that one off there will it work?

Thanks for the help!!
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Old 02-11-2003, 05:03 PM   #8
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My bonny is a 97 Series II motor. If this helps. replaced at 72,000.
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Old 02-11-2003, 06:05 PM   #9
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The SC on the SSEI is a roots (on top of engine with screw like turbine) and the centrifugal sc is a turbo (sea-shell shaped) sc that is run off a pulley driven shaft. The centrifugal sc is a more efficient/better sc but like the turbo it provides its power with a delay. The root SC has much less delay (feels instant) but reaches a limit sooner. Also the roots sc is very difficult to retrofit on a non-sc 3.8l. The easiest way to go is a centrifugal sc or turbo. If you want a sc now it is available for the series 2 non sc 3.8l. If you want a turbo it can be also had fairly quickly (custom job at this point) but not quite as fast. Either is a serious investment and will stress your engine more than normal.

Ty
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Old 02-12-2003, 06:37 PM   #10
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Jeffrey, NA means Naturally Aspirated, or without a forced induction (Turbo or SuperCharger). Your 97 is an NA series II.

Good luck on your modding
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