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From 3.8 non SC to 3.8 SC

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Old Mar 12, 2011 | 10:05 PM
  #1  
SirBoxer03's Avatar
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Default From 3.8 non SC to 3.8 SC

http://sanantonio.craigslist.org/pts/2260361043.html
for both are priced at $650

is the L67 3800 I'm going to look at sometime this week, i contacted the owner and he said it was pulled out of a 98 Buick Regal with approximately 103k miles. He said the previous owner thought the tranny was burnt out but after he sold the car to the current owner, the current owner found out a hose that carried the tranny fluid busted and that was the only problem since it was leaking fluid.


Let's just say the engine/tranny are both in excellent condition and it's the setup I've been looking for, there is one major problem.


I wont be able to do the conversion. The How To L67... is very nice, but waaaayyy out of my league. I was thinking of printing the entire post out and organizing it and seeing if any mechanics would give it a shot but it kind of worries me since all the electrical wiring is in the hands of a mechanic who might be going off of a step by step paper.

What should I do? Any suggestions?
I called up a few big name engine shops and they sounded pretty angry that I even mentioned a conversion.
 
Old Mar 13, 2011 | 08:18 AM
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What should I do? Any suggestions?
I called up a few big name engine shops and they sounded pretty angry that I even mentioned a conversion
The reason most shops get angry is they like quick engine changes in/out/in =done, not rewire custom jobs...
 
Old Mar 13, 2011 | 09:29 AM
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If you want an L67 and can't do the work, then turbo the car.

Or sell yours and get one already L67 powered.
 
Old Mar 13, 2011 | 10:20 AM
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First off:

I HAVE A 3800 MOTOR /TRANS SUPER CHARGE THAT CAME OUT OF A
98 CHEV
i contacted the owner and he said it was pulled out of a 98 Buick Regal
Unless you posted the wrong ad- it sounds like he doesn't know what it came out of.

Secondly, the image posted in the ad is NOT a series 2 3800 (that would be found in a 98 anything). Pic from ad:



Here is the wikipedia ad on the 3800:

http://en.wikipedia.org/wiki/Buick_V6_engine#Series_I

The Series I Supercharged engine ...HP was rated at 205 for 1991-1993 engines (models vary), and 225 for 1994-1995 engines.
Pic:


Quote from pic:
A supercharged 3800 (transverse mount) installed in a Buick Riviera for 1995, the last year of Series I L67 production. Power is 225 hp (168 kW)/260 lb·ft (353 N·m) for this version.
Then the series 2:
Introduced in 1995, the Series II is quite a different engine. Although the stroke for the 3.8 L engine remained at 3.4 in (86 mm), and the bore remained at 3.8 in (97 mm), the engine architecture was vastly changed. The deck height is shorter than the Series I, reducing weight and total engine package size. This required that the piston connecting rods be shortened 1 in (25 mm), and the crankshaft was also redesigned. A new intake manifold improved breathing while a redesigned cylinder head featured larger valves and a higher compression ratio. The result was 205 hp (153 kW) and 230 lb·ft (312 N·m), better fuel economy, and 26 lb (12 kg) lighter overall weight (to 392 lb (178 kg)). The 3800 weighs only 22 lb (10.0 kg) more than the High Feature V6, despite being an all cast iron design.

The new intake manifold greatly improved airflow. To meet emissions standards, an EGR tube was placed in the intake manifold to reduce combustion temperatures. This increases fuel mileage by a substantial margin.

The 3800 Series II was on the Ward's 10 Best Engines list for 1995 through 1997.
Pic:
(keep in mind the air intake is not factory in the pic)
Quote from pic:
A 3800 Series II L67 Supercharged engine in a 1998 Buick Regal GS.
So I'm thinking this guy doesn't know how old the engine is, or used the wrong pic (in which case, I'd be very skeptical).

I wont be able to do the conversion. The How To L67... is very nice, but waaaayyy out of my league. I was thinking of printing the entire post out and organizing it and seeing if any mechanics would give it a shot but it kind of worries me since all the electrical wiring is in the hands of a mechanic who might be going off of a step by step paper.

What should I do? Any suggestions?
I called up a few big name engine shops and they sounded pretty angry that I even mentioned a conversion.
You could just do a top swap since you have a 3800- but that's just as involved mechanically as a complete swap.

As for having a shop do the work- you're going to get screwed big time. Even the shops that know the conversion charge too much in my opinion. With a shop that's never done it before- they're going to overbudget in case stuff goes wrong (and at $50+ an hour labor, that adds up quick).

Also, no shop is going to take some guide printed off the internet and take that as their manual to do the swap, its just not going to happen- too much liability on their end.

I'd bet you won't be able to find a normal repair shop who will touch it- and if you find a shop that does custom jobs, they're going to overprice it.
 
Old Mar 13, 2011 | 02:12 PM
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x2

to translate what bumpin was saing,

Get a book and do alot of researh about motors and do the work yourself. Yeah is a pain, but alot more rewarding IMO
 
Old Mar 14, 2011 | 03:44 PM
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Thanks, I appreciate all the feedback. What I was thinking of doing anyways is just replacing the Engine + Tranny for a younger one. Preferably less than 80K miles. Then just throwing an Eaton Supercharger on there and work my way up from there.
 
Old Mar 14, 2011 | 03:48 PM
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So you want a newer lower mileage L36, and then attempt to top-swap it with an L67?
 
Old Mar 14, 2011 | 10:57 PM
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I don't think I'll go top swap, just throw me a SC on there. I mean that's basically a top swap aint it?

The eaton SC's are pretty good from the reviews I read and I mean they're the L67 SC anyways.
 
Old Mar 15, 2011 | 07:22 AM
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I don't think you understand everything it takes to put a supercharger on the L36. That's why it's called a top-swap, you can't just buy a supercharger and put it on. You have to replace everything from the heads up just to run the supercharger on your engine.
 
Old Mar 15, 2011 | 07:22 AM
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I don't think I'll go top swap, just throw me a SC on there. I mean that's basically a top swap aint it?
In order to "throw a SC on there" you will need to install everything from the heads on up from an L67, as well as a few other odds and ends. This is what is referred to as a top swap. Only the short block is the same between the L36 and the L67 (aside from the difference in compression ratios between the two).
 



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