6.2L (L92) Differances?
11-08-2007, 07:23 PM
#3
I found this info and got even more confused?!?!?!?!
The 2007 Cadillac Escalade has a 6.2 L Vortec 6200 (RPO L92) engine. It is an all-aluminum design which, while still a pushrod engine, boasts variable valve timing, a first in a mass-produced non-overhead cam V8 engine. The system adjusts both intake and exhaust timing between two settings. This engine produces 403 hp (301 kW) and 417 ft·lbf (565 N·m) in the Cadillac, but was inexplicably only rated at 380 hp and 415 ft·lbf in the earlier versions of the GMC Denali.
11-08-2007, 07:27 PM
#5
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WTF? So is it more a tuning difference in combination with some new technology that I have never heard of. Now I am confused. Maybe someone else will chime in.
11-08-2007, 09:00 PM
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Variable valve timing has been used by other auto manufactures for some time now such as the Honda VTEC and Toyota VVT-i. Variable valve timing does add good power, a good power band, and good fuel economy without changing the camshaft profile. It look's like to me that GM incorporated this technology with there pushrod V8 engine. I think this is a very good idea to get the most power and fuel ecomomy out of the LSX engine.
11-08-2007, 10:11 PM
#7
It might be the RPM they are rated at. IE the 403 hp 6.2 might be rated at 5800 rpm vs the 380 hp 6.2 being rated at 5200. If they have the same engine code then Id say its the tuning. GM might under rate the Yukon for whatever reason, when in reality it lays down the same numbers as the sierra and escalade. Those are my only guesses.
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11-08-2007, 11:49 PM
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I remember reading someplace that they were going to tune the Denali differently because they wanted the Cadillac to be the more desirable (more powerful) vehicle choice. There are not any mechanical differences that I am aware of.
Mike
Mike
