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Old 02-24-2008, 01:01 PM   #1
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Default Sorry, probably repetitive....

I have series II 3800 in my SE and I can get ahold of an Eaton M90 from a friend. What other mods need to be made to my existing engine to add the SC.

I heard the compression was too high in the n/a 3800 Series II?

any help would be appreciated.
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Old 02-24-2008, 01:12 PM   #2
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The compression is higher than the L67, but as long as you're tuned well and don't have any issues with KR (knock retard), then you should be fine. It'* a very popular mod with the W-Body (Grand Prix, Impala) community... You'll need a LOT more than the M90 though...

you'll need...
* L67 Heads (Pair)
* L67 Fuel Rails
* L67 Fuel Injectors
* L67 Pullies (2 idlers and one crank)
* L67 Supercharger and throttle body
* L67 MAP sensor and MAP sensor bracket
* L67 Lower Intake Manifold
* L67 Valve Covers (pair)
* L67 Coil Bracket
* All necessary vacuum line, bolts, and accessories for the job

Along with all the gaskets of course, and a tuned PCM (you can't simply swap one from an L67 since you have a different gear ratio)...
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Old 02-24-2008, 01:20 PM   #3
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Thank you, I can order everything form work (I manage an Advance Auto Parts) and we'll see how this all works. Should make a large difference after my K&N CAI arrives this week.
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Old 02-24-2008, 01:25 PM   #4
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Quote:
Originally Posted by AAP T
Thank you, I can order everything form work
All except for the PCM. You'll still need to get a custom tuned PCM, or tune one yourself if you have access to a tuner... Intense Racing (http://www.intense-racing.com) could probably do that for you...
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Old 02-24-2008, 04:07 PM   #5
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You'll probably need a rebuilt trans shortly afterwards as well.
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Old 02-24-2008, 08:58 PM   #6
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After some research, I am not going to do the SC. I think I may turbo it with an intercooler. Seems cheaper and easier. The CAI should make a huge difference already.

I do appreciate all the info.
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