Small block Chevy, since Vauxhaul is corporate GM. Opel used to install 283's and 327's in various passenger cars in Germany (the standard 190 hp and 230 hp 'gross' hp rated versions, nothing hotter). Unfortunately, the cars were the larger, heavier cars (Diplomat for example) and the cars were not particularly fast, although they were *great* cruisers. Interestingly too, Opel used the 283 and 327 from 1968 until 1975 or so, even though Chevy stopped using those sizes in ?68? or thereabouts, and went with the 350, 307, and 400 engines. Maybe Opel got the leftover 'surplus' engines?
Still, it would be cool to get a set of those 'Opel' V8 valve covers for a SB Chevy over here!
Bob
'No, I'm not putting a Chevy V8 into any of my Opels'