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Automotive News & Views Can GM make Cadillac the standard of the world Again?
6098 messages, Last post on Aug 14, 2009 at 4:43 PM
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Overhead cam engines come in the single and double types, where the double overhead cam pushes directly on the valve stem. The single overhead cam needs a rocker arm to push on the valve stem, as does the pushrod engine. The pushrod pushes the rocker arm and the cam (which is in the block) pushes the pushrod. All of these engines have over head valves. If you want to consider a "barbaric" engine design, consider the L-head, where the in the block cam did push on the valve stem, but the design limited the compression ratio (and therefore the power output). The basic limitation of the pushrod design seems to be that only 2 valves per cylinder are the common design, where the overhead cam design (particularly double OHC) uses 4 valves per cylinder. There are variations in the number of valves, but either two (pushrod) or four (dohc) is most common.
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Replying to: sls002 (Dec 27, 2007 8:49 am) |
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Just wanted to pop in here and clarify things: Cadillac is and always will be the "Standard" that all others will strive to become. I don't know why it's even questioned  Take for example the Escalade. There is nobody, not Mercedes, not BMW, not Audi/Lexus/Acura/Volvo who could design a more beautiful or powerful SUV like GM can. The Escalade is the Standard when you think of Luxury SUV's just like the Cadillac DTS and CTS are the best in their respective classes. The others just don't have the engineering prowess or the design engineering talent to build such a winning vehicle like GM can. All the naysayers have no clue what they are talking about and are just bashing Cadillac just to hear themselves talk. There just jealous of Cadillacs success and future successes.
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Replying to: onlygmmatters (Dec 27, 2007 12:27 pm) Didn't the Escalade basically start out as a Chevy Tahoe? Chevy not in same league as Merc, BMW, Audi, Acura.
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Replying to: onlygmmatters (Dec 27, 2007 12:27 pm) A quick refresher:  http://auto.howstuffworks.com/1970-1979-cadillac7.htm  http://www.cardomain.com/memberpage/663755     Cadillac hasn't built a world-class car in my lifetime, though the 2008 CTS is within striking distance.
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Replying to: xrunner2 (Dec 27, 2007 12:35 pm) |
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Replying to: bumpy (Dec 27, 2007 12:45 pm) They had more style, were probably better built, had more horsepower and way more luxury than anything on the market. The CTS is beyond striking distance, it has clearly made the others look like econoboxes. The first CTS was within striking distance. Then it went on sale and hasn't looked back. 
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 There is an automotive industry outside of the Ren Center, ya know. |
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Replying to: onlygmmatters (Dec 27, 2007 12:27 pm) Does that include the naysayers who had such bad experiences with GM products that they had plenty of time to hear themselves talk whilst waiting for the Caddy to be repaired. Again. And again...  It does appear that GM/Caddy is righting the ship, though. But, please, let's not rewrite history. The Cavalier, I mean Cimarron, was only memorable for one reason... Now, was your first post serious? Or just to keep this discussion heated...? |
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Replying to: laurasdada (Dec 27, 2007 1:33 pm) Must've been you because nobody in my family has ever had a bad experience with a GM product, much less a Cadillac  And I highly doubt we were the only family to ever have great luck with our GMs. Are you serious or just making stuff up? Maybe you meant Toyota? Cause that I CAN believe. |
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