I review the Chevy/GMC 1500 2.7L Inline 4 cylinder TURBO L3B engine as a Heavy Duty Mechanic. This 4 cylinder turbo charged engine produced 310 hp and 430lb-ft of torque. I review fuel economy (mpg), reliability and some common issues with this engine.

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I hope everyone had a good weekend. I have to say when I was doing research on this 2.7L inline 4 turbo charged engine from GM I was a little shocked with the amount of technology shoved inside it! Made for a longer video but hopefully you guys like it

so for starters this engine is making a tremendous amount of torque at 430 which to me is wild out of a 4 cylinder turbo charged engine.

the first thing I really liked about this gmc sierra 1500 2.7L turbo is how large the stroke of the engine is. the stroke is just over 4 inches which is larger then the 6.6L Duramax diesel. and having a long stroke really helps to create torque and create torque low in the rpm bands. perfect for towing and pulling heavy loads.

the second thing I like is that GM mounted this engine longitudinally meaning that the turbo piping is very simple. exhaust of passenger side and intake of driver side.

the third thing I like about this is the drivability, this engine does drive very well and the power delivery and throttle response are very good. GM did a good job really setting this engine up elimination almost all turbo lag.

the first common issue is lifter failures with this 2.7L turbo charged engine most like attributed to the active fuel management system from gm.

the second most common issue has to do with the direct injection fuel system. the result is carbon build up on the intake and the intake valves causing less air flow to get into the engine. this can cause loss of power, misfires and rough idling.

the third issues I chat about is the fuel economy. long story short this engine should be getting much better fuel economy then people are seeing. to me if you can't get amazing fuel economy out of the 4 cylinder engine what is the point of even having this engine. GM's own 5.3L v8 gets better highway fuel mileage.

and the fourth concern I have with this engine is all the new technology shoved into this engine could result in less reliability and longevity then a simply naturally asperated v8

I hope you guys liked the video!