http://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/ Autoblog Comments for GM cancels new DOHC V8 engine program http://www.autoblog.com/media/feedlogo.gif http://www.autoblog.com en-us Copyright 2008 Weblogs, Inc. The contents of this feed are available for non-commercial use only. Blogsmith http://www.blogsmith.com/http://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/http://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/
The LS3 DI would be a truly awesome mill, plus more fuel effiency. Sweet.]]>Jan 3rd 2008 2:41PMhttp://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/http://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/Jan 3rd 2008 8:32PMhttp://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/http://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/
Sad day for enthusiasts. Good day for smelly hippies.
]]>Jan 3rd 2008 2:43PMhttp://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/http://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/Jan 3rd 2008 2:46PMhttp://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/http://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/
GM will continue to refine the inherently superior push rod v8 for years to come

]]>Jan 3rd 2008 5:25PMhttp://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/http://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/
Between the SBC, 3.6, GM's upcoming diesels, and dual mode hybrids, there isn't really a huge need for this new engine. (A dual mode DI 3.6 would provide impressive economy and performance in a large Caddy while also providing the DOHC valvetrain required by the marketing dept)

Its an understandable business decision.

In addition, GM just introduced the new ZR1 with a pushrod engine. The original ZR1 was the 80s poster child for DOHC.]]>Jan 3rd 2008 8:30PMhttp://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/http://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/
It's a different evolutionary path, not a throwback. Roaches are crude, but they've kept up and are doing pretty well in many ecosystems.

About Toyota: maybe they should've borrowed from their NASCAR V8 for the new Tundra. Might have saved them some money. Might have fixed those camshafts too! I bet they could do a good OHV V8 if they tried.]]>Jan 3rd 2008 10:49PMhttp://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/http://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/
http://www.gm.com/explore/fuel_economy/news/2007/adv_engines/diesel_061807.jsp

Notice the size and power estimates. It fits in the same space as GM's current small blocks. The N* was larger than the small blocks. Also the torque rating on this new engine would make one hell of a great premium feel in a large Cadillac while making excellent fuel economy...

I am sure you will be hearing announcements from other manufacturers regarding their engine programs due to the new 35mpg standard. GM is the first to step up. ]]>Jan 5th 2008 2:31PMhttp://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/http://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/Jan 3rd 2008 2:48PMhttp://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/http://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/
The N* is a pig compared to the LS motors. The LS motors are torquier, physically smaller, more powerful and get better efficiency, all while sounding like an angry grizzly bear (that's a good thing).]]>Jan 3rd 2008 2:57PMhttp://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/http://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/
But pushrods will always have severe NVH issues, and NVH should never be associated with Cadillac. Not even remotely.

The Northstar is bloody outdated, and the LS isn't fit for Cadillac. The Ultra V8 should have put Cadillac back on the map with a flagship ready to take on the BMW 7-Series and Mercedes S-Class.

The HF w/DI is an impressive engine, but Cadillac's upcoming flagship needs an engine with more than 300hp. I can easily see an HF-based 4.8L V8 with over 400hp (assuming the same hp/cyl as the 3.6L DI V6). Bore it out a bit more (how does 5.3L sound?), and it'd easily surpass the supercharged Northstar.]]>Jan 3rd 2008 4:20PMhttp://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/http://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/
http://www.gm.com/explore/fuel_economy/news/2007/adv_engines/diesel_061807.jsp

Notice the size and power estimates. It fits in the same space as GM's current small blocks. The N* was larger than the small blocks. Also the torque rating on this new engine would make one hell of a great premium feel in a large Cadillac while making excellent fuel economy...]]>Jan 5th 2008 2:38PMhttp://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/http://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/Jan 3rd 2008 2:48PMhttp://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/http://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/Jan 3rd 2008 2:58PMhttp://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/http://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/Jan 3rd 2008 3:00PMhttp://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/http://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/
Perhaps there's light at the end of the tunnel: maybe the 6.2L small-block will be used company wide, and in different versions and formats, supercharged and naturally aspirated. So maybe the 6.2L V8 will take the place of the Northstar, which has been with us since MY1993. and find it's way into the XLR, V-series editions, and the expected Zeta-based STS/DTS successor. With that 6.2L, perhaps a high-tech, twin-cam V8 would be considered redundant.]]>Jan 3rd 2008 3:06PMhttp://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/http://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/Jan 3rd 2008 3:52PMhttp://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/http://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/
That feeling of immediate power delivery is inherent to a well-tuned powertrain and a good power-to-weight ratio, not a simple count of cylinders. Drive, say, a Cadillac CTS with the DI 3.6 back-to-back with, say, the anemic V8 in the Ford Crown Vic and tell me you don't prefer the six.

A V8 is a good idea when it makes sense. To install a V8 just to make spec-sheet readers happy is silliness. If my vehicle is light enough and the engineers' throttle tuning sufficiently adroit, why should I care how many cylinders are moving up and down? ]]>Jan 3rd 2008 5:54PMhttp://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/http://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/
The cancellation of the DOHC V8 program at GM is more proof that GM and Cadillac do not have what it takes to compete with Lexus or the big Germans. NO one in their right mind is going to buy a rumbling, unrefined pushrod engine in a luxury car. In fact, even the new CTS has that unrefined grumble in all V6 iterations. It's inappropriate.

Sorry GM. Spin it however you want. This was simply a bad decision and further distances Cadillac from the true leaders in the luxury market -- Lexus, Mercedes, BMW, Jaguar, Audi. Cadillac is forever 2nd rate.]]>Jan 3rd 2008 2:56PMhttp://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/http://www.autoblog.com/2008/01/03/gm-cancels-new-dohc-v8-engine-program/Jan 3rd 2008 2:59PM