Editing Buick V6 engine (section)

==== {{anchor|L67}} L67 SI Supercharged ====
The Series I Supercharged engine went through two supercharger revisions (Gen2 and Gen3) and the horsepower improved between initial launch and the time that the Series II L36 was introduced. The M62 supercharger was manufactured by [[Eaton Corporation|Eaton]], for the GM 3800 SI engine. HP was rated at 205 for 1991–1993 engines (Gen2 supercharger) with a {{convert|2.55|in|mm|adj=on}} pulley, and 225 for 1994–1995 engines (Gen3 supercharger). All of the additional horsepower for 1994–95 Gen3 supercharged engines was gained by using epoxy (not Teflon as commonly believed) coated supercharger rotors to improve efficiency, a larger supercharger inlet and throttle body. Thus, the Gen3 utilized a {{convert|2.85|in|mm|adj=on}} pulley versus the {{convert|2.55|in|mm|adj=on}} pulley on the Gen2. The easiest way to spot the difference between the Gen2 and Gen3 is the smaller pulley and the ribs on the side of the Gen2 extend all the way down the sides, while the Gen3 ribs are on only the top. They perform slightly differently, and interchanging one without tuning may cause engine problems. Redline on Gen3 engines is at 6000&nbsp;rpm, but the ECM will shift at 5400&nbsp;rpm without performance shift enabled.

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|title      = '''Applications''':
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*1991–1995 [[Buick Park Avenue#First generation (1991–1996)|Buick Park Avenue]] Ultra
*1992–1995 [[Oldsmobile 98#Twelfth generation (1991–1996)|Oldsmobile Ninety-Eight]] Regency Elite (optional), Touring Sedan
*1992-1995 [[Pontiac Bonneville#Ninth generation (1992–1999)|Pontiac Bonneville]] SE with H4U RPO, not badged - SLE (optional SC package), SSE (optional), and SSEi
*1995 [[Buick Riviera#Eighth generation (1995–1999)|Buick Riviera]] (optional)
*1995 [[Oldsmobile 88#Tenth generation (1992–1999)|Oldsmobile Eighty-Eight]] LS (optional), LSS (optional)
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