I KNOW I saw a LaSalle once in a book with a V12 emblem... must have been a concept or one-off

Please allow me to restate...

LaSalle never had a PRODUCTION V12 model.

Can I go with that one?

Revised revised list. Since about 1930 (names are my names based on the information I've found):

Buick has had five engine families: Straight Eight, Nailhead V8, "Aluminum V8" (which includes the iron block V6), Small V8, and Large V8

Cadillac has had nine engine families: Type 51, Series 341, Monobloc, OHV, OHV-2, HT, Premium V, Series 452, and Series 90

Chevrolet has had 12 engine families (although I'm trying to track down the Chevette's origins): 171, Vega 2.3, OHV Four, 60-degree, Straight Six-1, Straight Six-2, Stovebolt, Flat Six, Small Block, Big Block-1, Big Block-2, and (by majority rule) LS V8. It seems that the "153" four cylinder was derived from the Stovebolt six.

GMC has had two engine families: Straight Six and V6

LaSalle has had one engine family: Eight

Oldsmobile has had four engine families: Quad 4, straight six (shared with GMC), straight eight, and V8

Pontiac has had six engine families: Iron Duke, Split Head, Flat Head Six, Straight Six, Eight, and V8

Saturn has had one engine family: 1.9L

Corporate engine families include: Atlas, and High Feature. Ecotec is derived from Opel's Family II, which will be added when Opel is added to this list.

Detroit Diesel added one: 6.2/6.5

DMAX added one: Duramax

Lotus added one: LT5

That's 45 engine families since about 1932ish. This does not include Saab, Opel, and Vauxhall engine families nor any of the Asian engines that were built with GM, for GM, or while GM owned part/all of an Asian manufacturer. This list does not include any engines designed only for medium- or heavy-duty trucks or off-highway engines.

Edited August 10, 200718 yr by Hudson