The cancellation last week of General Motors new high-feature V-8 that was due for 2010 was indeed prompted in part by the passage of new fuel economy regulations in mid-December but CAFE was not the only reason. In a conversation with AutoblogGreen, Cadillac General Manager Jim Taylor revealed that the company had been going back and forth for some time on whether to proceed with the program. It seems that buyers have gradually moving away from the current Northstar V-8 toward the 3.6L V-6 for some time now and 2008 model sales combined with the new CAFE standards have finally put the nail in the V-8 coffin.

Currently only fifteen percent of all Cadillac sales are V-8s and that includes the Escalade and XLR. With the introduction of the direct-injected version of the V-6 this year, the engine's output is rated at 304hp compared to 320 for the 4.6L V-8 and the V-6 is more efficient and lighter. Going forward Cadillac will instead focus on the DI V-6 possibly added turbocharging at some point. For the applications where a V-8 is deemed necessary - like the Escalade or the XLR - they will use variants of the small-block V-8 instead. Even this engine may well get direct injection at some point and it's being tested now.

[Source: Cadillac]

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