swapping a 96-99 into a 95 (3100) - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 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 and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 01-29-2011, 08:35 PM   #1
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Default swapping a 96-99 into a 95 (3100)

My sister has a 1995 Olds cutlass with the 3100 in it. She overheated the car and blew the head gasket. I found a 2nd gen 3100 from a 96 grand am for cheap. I was wondering if it would bolt into the olds or if I would have to do any mods. Any help would be appreciated.

My basic question is would a 2nd gen 3100 (96-99) fit into a 1st gen (92-95). Thanks.
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Old 01-29-2011, 10:23 PM   #2
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I'm not sure what you mean by second gen.

This is an L82 which was available in 1994-1998 Grand Am'* and many other GM'* until 1999




This is an LG8 available in 2000+ Grand Prix, Century, Malibu, and Lumina

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Old 01-30-2011, 10:11 AM   #3
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I think what he'* asking is will it drop in which i think is a yes. Although you will maybe have to switch over some of the sensors as your taking a engine from a obd 1.5 to a obd 2. And What Jon is saying is there shouldn't be any difference between the years in engine other than electronics (maybe).
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Old 01-30-2011, 11:55 AM   #4
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Well if you're swapping the L82 for the LG8, there is some modification necessary. You need to swap the alternator bracket and alternator, AC compressor and passenger side dogbone mount and bracket. The fuel rail and fuel injectors and the entire engine harness. Also, you need to either buy a EGR adapter or EGR delete kit from WOT-tech.com.
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