Supercharger for Series II Engine - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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 03-14-2003, 02:59 AM   #11
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Quote:
Originally Posted by Allmachtige
Do 1 or 3. 2 is virtually impossible (adding Eaton SC to NA 3800).

If I were you, I would do 1!
No it isn't...you can do it, it will however require substantial amount of work...but it can be done, if I am not mistaken it might have been done...IMHO not really worth it!?!?
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Old 03-14-2003, 04:08 AM   #12
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I'll be blunt here. Only a fool would attempt to convert a NA to a SC. By the time you replaced everything you need to, and not even including your time, you could have done a whole drivetrain swap and saved money. If you're talking about converting a Series1 NA, it'* really dumb. You can get a Series 2 L67 drivetrain, wiring harness, and PCM for less than the conversion would cost, and you end up with the M90 instead of the M62.

In that regard, yes, it CAN be done, but you'd be the brunt of many jokes thereafter. You CAN beat a stock GTP with a modded-to-hell Sunfire, but why would you want to when you could buy the GTP for the price of the Sunfire and all your mods? Same principle. It'* also possible to pick your butt with a toe, but you have to dislocate your hip and your knee first.

There'* a post up in Techinfo that answers the questions we've discussed here.
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Old 03-14-2003, 08:37 AM   #13
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Not trying to flame anyone or anything; but........... why not just wait another 6 months to a year and just buy a 1996/98 Bonnie SSEi? In the long run you'd put about that much time and work into a conversion of an SE. Plus just buying one would be cheaper. Just MOO.
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Old 03-14-2003, 12:18 PM   #14
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Hmmmmmmmmmmm the way i see it..never say never ........cuz there are some of us "OLD" fools who will say WTF it can be done.......Paxton......Vortec...can be adapted to fit ..you just have to step back look at want you want to do....figure out what your budget is going to be ...and go from there...Which i`m doing now with my new project
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Old 03-14-2003, 12:39 PM   #15
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Ok guys, I guess converting to a supercharged engine is out of the question. I would like to get a newer bonny ssei. The ideal year would be a low mileage '99 ssei. The trouble is that I've already invested too much in my car and it'* in good shape. I'm designing a site and soon I'll post it for review. Also, even if I get a '99 SSEi it would still have to be modified to get 350HP or more. Ideally, I'd like to get a Seville STS, but as you probably know to get a decent low mileage one is $15K or more. Anyway, the Seville STS is only 300HP with a heavier car. The Seville STS would also have to be modified to get 350HP or more.

Actually, in some ways I like the outside design of the Bonny SSEi better than the Seville STS. I know the interior doesn't compare, but from the front and back the Bonny looks sportier and meaner.

If I keep my '95 SSE, I can replace the entire drive train. Can I get a late model supercharged engine with a 4T65E tranny from a Buick, Oldsmobile or GTP? There seem to some available on E-Bay. If I replace the entire drivetrain and computer, do I need to replace the fuel system (pump, filter and lines), radiator or exhaust? If I can get the drivetrain for about $1500, what would be the installation cost?
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Old 03-14-2003, 01:06 PM   #16
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Quote:
Originally Posted by crod101
Ok guys, I guess converting to a supercharged engine is out of the question. I would like to get a newer bonny ssei. The ideal year would be a low mileage '99 ssei. The trouble is that I've already invested too much in my car and it'* in good shape. I'm designing a site and soon I'll post it for review. Also, even if I get a '99 SSEi it would still have to be modified to get 350HP or more. Ideally, I'd like to get a Seville STS, but as you probably know to get a decent low mileage one is $15K or more. Anyway, the Seville STS is only 300HP with a heavier car. The Seville STS would also have to be modified to get 350HP or more.

Actually, in some ways I like the outside design of the Bonny SSEi better than the Seville STS. I know the interior doesn't compare, but from the front and back the Bonny looks sportier and meaner.

If I keep my '95 SSE, I can replace the entire drive train. Can I get a late model supercharged engine with a 4T65E tranny from a Buick, Oldsmobile or GTP? There seem to some available on E-Bay. If I replace the entire drivetrain and computer, do I need to replace the fuel system (pump, filter and lines), radiator or exhaust? If I can get the drivetrain for about $1500, what would be the installation cost?
To be specific, a SC is NOT out of the question. Converting to an Eaton is. Big diff. Now keep in mind that I kill STS'* with my Series 1 daily. They have more hp, but I have the low-end torque and less weight.

For the conversion, you need the ENTIRE drivetrain (this includes the fuel rail and injectors, and everything from there down). You want the engine, trans, wiring harness, PCM, and all fuel related stuff EXCEPT the fuel pump. That'll be fine. Radiator is fine, too. As far as the exhaust is concerned, you MIGHT have problem with the transistion from the exhaust manifolds to your stock downpipe, but that'* minor (if it'* even true) in comparison to the rest of the undertaking. This is a huge thing. Won't be easy. That wiring harness connects your various drivetrain components to the PCM, which in turn connects to the gauges, etc. It'* been done, but it won't be easy. There'* guys dropping the L67 into Fieros now. You can get more specialized support at www.l67swap.com this is a new forum that just started up for this very reason.
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Old 03-14-2003, 02:36 PM   #17
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crod101, personally I think you got a fine engine there. Nice and strong Series II NA. Better than my L27.

But I suppose I'm going for originality to create the fastest L27 possible, but I'm also WAY too far into this engine to turn around and buy another Bonnie or an L67 for that matter. This is just my opinion, but if I were you I would mod the hell outta your 95 SSE.

And when the time comes, rebuild.
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Old 03-14-2003, 03:59 PM   #18
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If you go with an L67 swap, I would highly recommend doing a performance exhaust. If you are looking for 350 HP, that is one of the first mods you will be doing. My SE came with the SSEi exhaust because of the L67 engine. It did not come with the tips though.

I would also be weary of purchasing a complete assembly from a GTP, Olds, or Buick because the wiring harnesses may be different and there is a slight chance that the PCM will be different and not interact with the rest of the car. I could be wrong on the PCM issue, but it is something to consider.

I personnally like the 1992-1995 body style better than the 1996-1999, so I would do similar if I were in your shoes. As for the most reliable drive train, go with a 1998+ if you can. I believe there are some minor differences in the valve seats between these and the earlier Series II L67'*. I believe the earlier (1996-1997) engines were prone to cracking around the valve seats if you did any porting/polishing. For more info check with Thrasher and Intense. One of them sells worked over heads and won't accept the earlier heads for a core because they can't use them. This is not a problem if you are going to leave them stock.
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Old 03-14-2003, 11:02 PM   #19
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Ok, how about I just rebuild my N/A Series II engine by doing the following:
1. Add the forged internals of the */C motor (forged pistons/rods/crank).
2. Port the heads.
3. Add larger injectors.
4. Add Larger fuel pump and larger fuel lines.

Is this possible? How much HP is the engine going to put out? About how much would this cost? Can I still use my 4T60E tranny or do I need the 4T65E tranny?
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Old 03-14-2003, 11:43 PM   #20
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The 97 up L67 swap is not bad, but every car is different wiring wise so there would definately be some issues there, Adding ZZP'* CSC kit to a N/A 3800, but all of the r&d has been done on 97 and up cars, it is a very powerful bolt on and has lots of advantages like lower intake charge temps, as oposed to a roots type supercharger, it also has less parasitic drag, I had the chance to drive a Grand Prix with the CSC in it and it is a different powerband because it spools up a little and you dont have the innstant torque like an L67 has, I was in the same boat you are in with performance goals, but then I waited and I am so happy with my 98 SSEI, remember if selling the car someday will be an issue many buyers will run away from a swapped car even though it was nicely done, search on clubgp too, there are many helpful topics on swaps there also,
Good luck..
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