Engine options

Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's, Olds 98 91-96, Buick Lesabres and Park Avenue 91-96. Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.
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Hoss
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Engine options

Post by Hoss »

New to the page here. I'm sure this topic has come up before, but here goes. I have a 1992 SE that the engine is done. Can I use anything else but a L27 L code long block or are there any other options. I can find series II engines all day but the Series I are a bit harder to come by.

Thanks
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95naSTA
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Re: Engine options

Post by 95naSTA »

If I remember right, 92 was a one year only upper aluminum intake manifold and no EGR setup. You should be able to use the block and heads from any 92-95 L27 though. (95 L27 being in Regals, vans, or whatever didn't get the L36 that year)

Maybe you can just plug the EGR stuff and go on the 93-95s? Anything air/fuel related that's different I would swap over though. Injectors/MAF/Etc.
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Roadrunner
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Re: Engine options

Post by Roadrunner »

My 92 had EGR.
I always thought it was a mid-year change.
Didn't some 92's also have Magnavox ignition?
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RJolly87
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Re: Engine options

Post by RJolly87 »

Yes, some 92's did come with Magnavox ignition systems.

As mentioned, you will need to keep it L27. If you pull the engine from a later 93-95 with EGR, you'll likely need to swap the manifolds over, which you may as well do LIM gaskets anyway at that point.

You can also get a donor car, and do a drivetrain swap, but that is a much bigger project than changing engines out.
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RJolly87
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Re: Engine options

Post by RJolly87 »

Not to question your credentials or anything, but why do you say the engine is done? What is the story on that, and also the service history of the car?
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Re: Engine options

Post by Jrs3800 »

I know this is an older post but I'm going to throw this out here...

91-92 L27 was 8.5 : 1 compression and 93-95 L27 was 9.0 : 1 compression..

You could use the 91-92 heads on the 93-95 block... 95 units used the series 2 crank and had a one year only balancer as well.
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