General Motors Engines
Well I have a 94 Z71 with the 5.7 liter V8.. Love this engine to death!! Tows great, sounds great, accelerates great, dependable as a newfoundland dog.. An overall great motor.. Only beef is the gas milage but I guess you can't expect 25 mpg outta a gas V8 anyhow now can ya?? hehehe Well that's my opinion on this engine.. I love my truck, bumper to bumper and everything in between..
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The 4.8L has really impressed me with the power and fuel economy. I expected a 293ci engine to be weak, kind of like a 283. I thought you would have to rev the daylights out of it to get good power - boy was I wrong. This little engine has plenty of torque from just off idle to over 4K. Never had to rev it higher than that. An I have gotten close to 25mpg on the highway. 22-24 when using real gas (not CA oxygenated crap).
The 6.0L engine is more of a workhorse, more torque down low and even less reason to rev the motor to get the job done. And I still get 15+ with my small camper on the truck. 18+ empty on real gas.
A 327 used to be my favorite engine, but the new ones do everything better than my old 327 did.
Real progress has been made with the new engines. 50,000+ miles, 0 problems.