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GM’s New 6.2L V8 Small Block L86 Engine Estimated At 420 HP

Coinciding with its announcement of the all-new 2014 GMC Sierra Denali 1500, General Motors has announced preliminary power ratings for its new 6.2 liter EcoTec3 V8 L86 engine.

Like every engine in the Gen V Small Block engine family, the new 6.2L L86 offers more power and higher efficiency than its predecessors thanks to a trio of technologies, including direct injection, active fuel management and variable valve timing. As such, the L86 is estimated to produce 420 horsepower and 450 lb-ft of torque — the most power and torque of any light duty truck engine. In the 2014 Sierra and 2014 Silverado, the powerplant is expected to deliver a class-leading maximum trailering capacity of 12,000 pounds.

The 6.2L L86 will be available in the 2014 Sierra Denali and SLT, certain trim levels of the 2014 Chevy Silverado, and some of GM’s all-new SUVs based on the K2XX vehicle architecture.

Final SAE-rated power and torque numbers will be available later this year, but if the Corvette’s 6.2L LT1 (that’s very similar to the L86) is any indication, there’s a good chance GM is playing it safe with the 420/450 figures.

More information on the EcoTec3 engine family:

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Comments

  1. 12,000 pounds towing?! Wow, I like the power figures too!

    Reply
  2. It kind of seem like they were a little conservative with the numbers but I know numbers don’t mean everything I’m glad to see the torque up by 33lbs/ft. I figure the highway mpg be around 19 maybe 20 mpg with the AFM. I do know they engineer their engines for durability that one thing I don’t think any other competitor can hand them..

    Reply
  3. Can I see the torque curve on this version of the 6.2 L.?

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  4. New numbers on the gmc website are 425hp and 450 tq.

    Reply
    1. Sergio — thanks for bringing this up. We just confirmed with GM that the horsepower number on the GMC website is incorrect. Nevertheless, the 420 number is still just an estimate, and not an official SAE-rated figure. Stay tuned for those.

      Reply
  5. Wow. Ready to release 2014 trucks, and chevy fans still guessing hp numbers for their beloved 6.2?
    GMC continues to be noting but shame.

    Reply
  6. missael –

    why are you even on this site? doesn’t ford or dodge have their own forums you can hang out at or do you have too much time and too little knowledge or just a burning need to bad mouth GM and Chevy?

    I’m sure, now that GM has announced their new engine lineup, ford will soon come out with an announcement that their “new” vehicles are going to have more hp/torque.

    The reality is GM and Chevy fans could give a crap less what ford does, so why would you care what GM and Chevy do?

    Reply
  7. Please GM we are only 3 months away from 2014 and you still have no numbers on the new L86 6.2 liter I want to get my new truck ordered. I was told by GM that I could order it on Sept 15th still will not let you order what is the hang up get with the program Please. GM driver and owner for over 40 years this can not be good for business.

    Reply

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