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 series 1 s/c and na

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RidzRiv
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RidzRiv


Name : Greg
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series 1 s/c and na Empty
PostSubject: series 1 s/c and na   series 1 s/c and na EmptyWed Feb 09, 2011 2:12 pm

What are the differences between the series 1 l27 and the series 1 l67 besides the fact that the l27 has a supercharger?
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RidzRiv
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RidzRiv


Name : Greg
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Location : Wisconsin
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series 1 s/c and na Empty
PostSubject: Re: series 1 s/c and na   series 1 s/c and na EmptyWed Feb 09, 2011 2:13 pm

l67* has super charger
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Abaddon
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series 1 s/c and na Empty
PostSubject: Re: series 1 s/c and na   series 1 s/c and na EmptyWed Feb 09, 2011 2:32 pm

Really the only thing that differs between the 2 is the compression ratios (higher on the N/A engine), and the upper/lower Intake manifolds. Everything else is pretty much the same except for a couple of wiring harnesses and the PCM.
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RidzRiv
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RidzRiv


Name : Greg
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Location : Wisconsin
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series 1 s/c and na Empty
PostSubject: Re: series 1 s/c and na   series 1 s/c and na EmptyWed Feb 09, 2011 2:32 pm

so how difficult would it be to supercharge?
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Karma
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series 1 s/c and na Empty
PostSubject: Re: series 1 s/c and na   series 1 s/c and na EmptyWed Feb 09, 2011 3:48 pm

Rods and bearings in the l27 don't like boost. People have done if, but never successful for long.

http://www.pontiacbonnevilleclub.com/forum/viewtopic.php?f=44&t=194

If you are set on the l27 then turbo it. But for the money and effort, just swap in a series 2 SC. Its cheaper than even throwing in a series 1 SC. Series 2 SC should be able to go in whatever you've got if you take the wiring harness and PCM.

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albertj
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series 1 s/c and na Empty
PostSubject: Re: series 1 s/c and na   series 1 s/c and na EmptyWed Feb 09, 2011 7:25 pm

L27 + supercharge = eventual fail.

L67 is what it is because of an over-engineered bottom end. I was told but can not verify that the L67 bottom end can take well over 900 (brake) horsepower.

If you look around a bit odds are you'll find an L67 in a junked oldsmobile 88LSS or 98, or a forgotten high end Buick Century, or a plushed-out Bonnevile just waiting for you for short money. Try phoning these guys:

http://www.horseheadspickapart.com

and ask if they have any GM cars with the supercharged 3800 sitting in the yard. They usually have 2 or 3 at a time that are rebuildable. Check price. Then try a junkyard near you and use the price you got to work 'em down -- IF you are prepared to buy. Cash talks.
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series 1 s/c and na Empty
PostSubject: Re: series 1 s/c and na   series 1 s/c and na Empty

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