I've heard that the 3800 supercharged motors are the same as the buick grand national motors except that they are supercharged and the grand national motors are turbocharged.
Are there any other differences between the two motors?

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Tons. That's like saying the Gen I small block chevy and the LS1 are the same except the LS1 is fuel injected.

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Bye Bye:

RIP sandrock

Yeah, except for the displacement they really don't have much in common lol...
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-Dan
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2012 Nissan Maxima SV Premium • Super Black • Charcoal • VQ35DE • Bose • Factory HID • 5000k LED Int/Ext
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__I n n o v a t i o n__T h a t __E x c i t e s

What exactly are the differences?

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Block, heads, induction, drive wheel configuration, cam-shaft, etc. I doubt there's a single piece that's the same between the two.

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Bye Bye:

RIP sandrock

THIS!

/end thread

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LUCAS Member # 534.
96 olds cutlass supreme SL 4 door 3100 4t60 *3.33 gears* *Fe1* 115K bone stock DD

Not necessarily true in the Series 1. The Series 1 is very closely related, the Series 2 is a complete redesign.

In fact, if you look under the hood of both the 95 SSEi you drive and a GN, you'll immediately see the same valve stagger in the port spacing of the exhaust manifolds. The valve train is very similar as well, to the point that I'm actually running the same valve springs a GN would with the same setup. Direct lineage to the GN from a Series 1. Consider the GN grandpa. How similar are you to him? The Series 2 is......


GN is Grandpa.
Series 1 is You.
The Series 2 is your half brother from your Mother's second marriage.

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Click here for mod list for both cars
93 SSEi, 95 SLE (supercharged) 97 Buick LeSabre Limited
PontiacDad at WCBF '04: Cruise control? That's like surrendering!
Comprehensive guide to troubleshooting, rebuilding, and modifying Eaton Superchargers

Reading Material
http://en.wikipedia.org/wiki/Buick_V6_engine#LD5

http://www.gnttype.org/general/v6hist.html

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Lol at your way of describing this, but in all honesty, it makes perfect sense.

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I'm backkkkkkkkkkkkkkkkk!

I understand now wilwren I had a feeling the series 1 and grand national motor were related (unlike that lame-sauce series 2) , does my series 1 motor have two or four bolt crankshaft caps?
How many bolts do the crankshaft caps on the grand national motor have?

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4 mains. Edit: Now that I'm awake, they are 2-bolt mains.

And unlike what beast said above, there are actually quite a few parts shared between the motors.

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Click here for mod list for both cars
93 SSEi, 95 SLE (supercharged) 97 Buick LeSabre Limited
PontiacDad at WCBF '04: Cruise control? That's like surrendering!
Comprehensive guide to troubleshooting, rebuilding, and modifying Eaton Superchargers

There were some glaring mistakes and omissions on the Wiki page (again). I've made some corrections to the Series 1 L67 section. There was no mention of the larger inlet and TB, and AGAIN, someone thinks the rotors are coated with Teflon. They are epoxy-coated, but the primary gain is in the larger inlet and TB regardless.

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Click here for mod list for both cars
93 SSEi, 95 SLE (supercharged) 97 Buick LeSabre Limited
PontiacDad at WCBF '04: Cruise control? That's like surrendering!
Comprehensive guide to troubleshooting, rebuilding, and modifying Eaton Superchargers

Ok, while they are similar, my statements were correct in saying that his original post was incorrect. It's not the same engine with a different form of forced induction on it, there are larger differences than that. The Series I L67 is an evolution of the GN motor, the SII is a Revolution.

And NOT_aerosmith, be careful what you call "Lame-sauce", because it might just smoke your car.

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Bye Bye:

RIP sandrock

Ed, the are fairly closely related. The Series 2 is not. From the GN to the S1 L67 (or L27) there is a direct line of lineage and changes to the original. The Series 2 was a re-design from the ground up.

(and his not-lame-sauce 95 L67 is actually quicker stock for stock than your lame sauce! LMAO)

Your first post (first reply) in this topic is as wrong as the original thought.

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Click here for mod list for both cars
93 SSEi, 95 SLE (supercharged) 97 Buick LeSabre Limited
PontiacDad at WCBF '04: Cruise control? That's like surrendering!
Comprehensive guide to troubleshooting, rebuilding, and modifying Eaton Superchargers

Ok well im guessing he wants to put a GN motor in his Bonne so, are the bell housing patterns the same between the LD5/LC2 and the 3800?

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Very similar. Enough that it would work with nothing more than minor tweaking (I'm guessing). GM kept them pretty standard from early on.

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Click here for mod list for both cars
93 SSEi, 95 SLE (supercharged) 97 Buick LeSabre Limited
PontiacDad at WCBF '04: Cruise control? That's like surrendering!
Comprehensive guide to troubleshooting, rebuilding, and modifying Eaton Superchargers

Although it would be amazing, I don't plan on doing that, I just wanted to clear up some things about these motors.

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Oh ok. Anything you need to know about these cars or the like, you know where to come!!

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In this particular topic viewtopic.php?f=12&t=27035, you guys were discussing that an L67 could not handle 1000 HP but a Grand National motor could, since the series 1 and Grand National motor are similar, what particular characteristics about the Grand National motor make it able to handle that much power while an L67 can't.

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1000 hp GN motors are STAGE 3 setup. custom blocks, etc. I know a guy that has a 9 sec GN and he has STAGE 2 setup. Motor cost like 15K.....

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