[Unreal]

[ QUOTE ]
1969 Vette L78?...No such animal

1965 was the only year that an L78 was offered in the corvette.

[/ QUOTE ]

OK, bad example.

You said that the L78 Chevelle was a different engine internally than the L78 Corvette. I know you said the L78 Corvette was only available in 65, but the car in question was a 66 Chevelle. So to stick to the question, would the 65 Corvette L78 be the same motor internally as the 65 L78 Chevelle? (Z16)

What I'm really trying to learn is if it was "normal" for same coded motors (eg L78. L72, etc) to be different from model to model. I would have thought (pure conjecture) that an L78 was an L78 regardless of the car it was dropped into. (manifolds aside for clearance reasons). I wonder why they would not call it a different "L" number if it were different internally.

So maybe a better example of my curiosity is whether the 69 L72 differed internally when the application was a Corvette, Impala, COPO Chevelle, or COPO Camaro. I sure thought they were the same, and assumed other motors would have been the same, too. Same curiosity would hold for other motors that shared "L" numbers, and were available across different applications.