i have the opportunity to pick up a series 2 3800 for dirt cheap. just wanted to know if its possible to put the supercharger on it with minimal modifications, anyone done it?
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10:25 AM
PFF
System Bot
PBJ Member
Posts: 4167 From: London, On., Canada Registered: Jan 2001
it is possible. will it work well, NO, you need different pistons and connecting rods for lower compression and ability to handle boost. Would be MUCH cheaper to start with a 3800sc mtr from the begining. a non s/c series 2 3800 is quite a performer on its own.
The tops of the motors are completely different.The injectors are in the heads on the L67 engine because there is no room on the manifold.There are internal differences.also.
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11:42 AM
Sleeper Member
Posts: 726 From: Torrance, Ca Registered: Mar 2000
Not a good idea. There are many mechanical differences between the 3.8NA and the 3.8SC. The 3.8 NA probably would not stand up to much boost before some type of mecahnical failure.
I've wondered how much power you could squeeze out of a stock 3.8 SC if you removed the roots type Eaton supercharger, and used a centrifical supercharger with an intercooler. You would have to fab up an intake, but a centrifical SC could provide much more boost than a roots type.
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08:15 PM
David DeVoe Member
Posts: 1358 From: Grand Blanc, MI US Registered: Jul 2001
Too many differences between the engines make that a very hard way to get a blower motor. Also a note for Hugh, the injectors on the L67 are NOT in the heads they are in the lower intake. I know I look at this stuff all week long.
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08:22 PM
GTDude Member
Posts: 9056 From: Keysville, Virginia, USA Registered: Nov 2001
While I believe that it would be possible to supercharge the N/A 3800 engine I would caution against doing this unless the engine was specifically built for a boosted application. You will need lower compression pistons, a different cam, possibly different size injectors and above all an engine management system especially suited to running an engine under boost conditions. If the whole system is not designed to work synergisticly, it's BOOM!!! time.
Originally posted by David DeVoe: Also a note for Hugh, the injectors on the L67 are NOT in the heads they are in the lower intake. I know I look at this stuff all week long.
rockcrawl is right. Look at this pic of my engine, see the holes in the heads, within the wavy section of the valve cover? Thats where the injectors go.
There is a Grand Prix GT, with a Paxton Novi 2000 centrifugal sc, making almost 20 psi of boost and running 12.30's in the 1/4. This is with a totally stock bottom end. Oh and the rods are the same, only the small end bushings are different because the L67 has larger wrist pins. In the long run you are better off to just buy an L67, no matter how cheap the L36.
