Your reaction: WTF, did LT just post a pic of a Cad concept in the C8 section?
Response: Yes I did, and no I'm not nuts ... er ... not certifiable anyway. Last week the above Cad Escala debuted at Pebble Beach. So what? Seems like every other year Cad offers up a stunning design there that is never more than...well in high school we called them PTs. Regardless, here is a quote from Cad's High Mucky Muck, Johan de Nysschen about the Escala:
(BTW "theoretical power" is usually show car speak for, "Don't open the hood or you'll see one of our current production engines.")...uses a new 4.2-liter twin-turbo V8 for theoretical power, which is a prototype for new models.
All of us here know the virtues of the LS/LT type OHV engines. They are light and compact. However, they will always be perceived by Euro snobs (and by extention USA snobs) as low tech and semi obsolete. We KNOW and point out that this "low tech, semi obsolete" engine annually leads Europe's most famous race and VERY frequently wins.
That said, the Cadillac demographic might or might not know the word LeMans. They do, know the words Mercedes, Audi, Jaguar, etc. The sales people for those cars know how to press a customer perceived advantage. Cadillac engines NEED to be OHC - warts and all. An OHC engine avoids trying to re-eduate a high end customer about something he doesn't really want to know about - just that it's perceived to be state of the art.
The Northstar V8 (RIP) was a pretty good effort, but didn't adapt well to power tweaking or MPG improvements. Ford's first gen OHC was the same, but their Coyote is a pretty good engine that "borrowed" a LOT of the block ideas from the GM LS engines. The Ford looks the same as the 10 year older LS1 upside down - crank view - to any layman.
I think the 4.2 L TT that Nysschen described will be a VVT, DI, OHC engine that will enable better MPG and performance than our lighter OHV engines by the time they finish tweaking it.
I'm not saying the LT OHV engines will be dropped...not at first and maybe never. But if the OHC 4.2 (or whatever ultimate displacement for this new engine series) can match the MPG in Chevy trucks that Ford gets in their TT V6 Trucks .... that would be a marketing coup for GM. However, long term, I can't see GM producing 2 V8s unless they share the same block, which is probably too big of a compromise to maximize either design.
....or all of my thoughts above are wrong and Nysschen pushed for a small displacement OHV LT V8 - but that sounds MORE wrong to me.