Originally Posted by Iraqvet05
Has anyone seen the specs on the new Ecotec3 engines coming out for the Sierras and Silverados? The numbers look pretty impressive. The new 5.3 (an $1100 option over the 4.3L) is putting out 355 hp and 383 torque; by comparison my 2007 5.3 is listed at 315 hp and 338 lbs. They are also introducing a 6.2 gas for the 1500 later in the fall with 420 hp and 450 lbs of torque (current 6.0 is at 360/380)....haven't seen any info that the 6.2 will be an option in the 2500s yet. GM is making me drool.
The V6 is a remarkable engine. With the 285 hp and 305 lbs, it drives very similiar to the older 5.3. Additionally, it gets 3 mpg more than the 5.3 for empty driving.
Also, it does not feel underpowered when towing its max rating on level ground.