Time for an L67 swap???

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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tallbump
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Year and Trim: 1998 SE
Location: Erie, PA

Time for an L67 swap???

Post by tallbump »

Ok, not now. Tax time.

Those of you that know me well know I have been wanting a supercharged Bonnie for years now.

My 95 was a NA 3.8 as is my 98.

Many of you know the story of my 98, the Golden Wok.

Well, overall it's holding up well, but it's losing it's power...idling rough, and hesitates in first gear.

It's about to hit 168K on the odo.

Was thinking about just keep it limping to tax time and buying a truck.

But, I have also wanted to swap the motor for a L67. Since the overall car is good, and it has sentimental value, and I could probably do the swap with trans for cheaper than buying a decent truck, I think it's about time.

Thing is, I am way out of the loop anymore.

Is it feasible to still find a donor L67 and tranny with lowish miles?

What are we talking, cost wise for the motor and tranny?

If I remember right, I'd need to get a new PCM too, right?

Hmmmm....time to brush off the rust and start looking into this again. :twisted:
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coop8070
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Year and Trim: 94 Buick lesabre limited

Re: Time for an L67 swap???

Post by coop8070 »

I'm going to do a similar swap in my 94 lesabre to make a mild sleeper. I have read it being done on here a few times, but after looking at my factory service manual it looks like a whole bunch of electrics and wires are specific to either engine. Now this could just be the case for the l36 vs l67 but I would assume it applies to the series 2 as well. My goal is to do the swap and keep a functioning dash with all its gauges and HVAC. It will be a lot of work, but the lesabre was the only h/c body to not come with the l67 option. I digress, get a complete donor car, as what I am planning on doing. Lucky for you, you are not limited to trying to find a 96 park ave ultra, as that is the only year and body style that most matches my car and has series 2 super charged.
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CatmanFS
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Year and Trim: Gold 98 SSEi

Re: Time for an L67 swap???

Post by CatmanFS »

You might be able to get away without having to get a different cpu. I know it sounds rediculous, but the SC is a mechanical unit. As long as the bypass is configured correctly, and the pressure readings are correctly set in your current pcm you might be able to do it, but it's a big maybe.
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