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Guesses on new 2014 5.3L & 6.2L power #s

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Old 04-01-2013, 11:40 AM
  #31  
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Not sure if it should be believed yet as pickuptrucks.com has a history of April fools jokes...but they are reporting the 5.3 liter as being 355 hp @ 5600 RPM and 383 lb-ft @ 4100 RPM on 87 octane.
Old 04-01-2013, 01:29 PM
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Those numbers sound legit to me... I'm also pretty happy with them. If its an April fools joke its a pretty bad one... nothing crazy about it.

I like that torque figure!
Old 04-02-2013, 05:28 PM
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the 4.3 v6 and the 5.3 v8 are going to have a bigger jump in horsepower than the 6.2. i heard the 6.2 is going for low and midrange power in the trucks.
Old 04-02-2013, 05:41 PM
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just in car and driver 5.3 is 355 horse 383 torque
Old 04-03-2013, 02:09 PM
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GM also did a press release on the 5.3 having 355hp last week in the Detroit News auto section. No mention of the 6.2L in a truck.
Old 04-03-2013, 02:46 PM
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Does anyone have any idea when the 6.2 hp and tq numbers are supposed to be released?
Old 04-03-2013, 03:13 PM
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I'm trying to figure out what else, besides hp/tq has changed. the 2014 5.3 has less power than the 2013 6.2, yet has a higher tow rating. Yet, while they haven't released the new 6.2's power numbers they claim it will have an even higher tow rating. I must be missing something.
Old 04-04-2013, 03:08 PM
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Power numbers are only a small factor when it comes to towing rating.
Power/torque can be made up by gearing.
Other factors are braking, cooling, suspension, frame etc.

peace
Hog
Old 04-04-2013, 03:14 PM
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The 2014 GEN 5 L83 5.3 has the same torque rating as the 2007-2009 L76 6.2 in the GMT900 trucks at 383 lb/ft, but the L83 has 51 LESS cubic inches, not too shabby..

1.18 lb/ft torque per cube, that beats the LS7 at 1.1 lb/ft per cube. So if the L86 follows suit, being 376 cubes, the L86 should have around 444 lb/ft of torque. The L86 is supposed to out torque the LS7 under 4000rpm. The LS& outputs approx. 440 lb/ft at 4000rpm, so this starts to make sense.

The L83 5.3 makes 355 Certifed hp, thats 1.09 per cube, so the 376 cube L86 should make around 410 certified hp.
GEN 5 L86 extrapolates out to 410hp/440 lb/ft from 376cubes(6.2 liters) engine, hmm.
The GEN 4 Cadillac L94 6.2 was rated at 403hp@5700rpm/417@4300rpm

I'm interested to see what the L86 6.2 is going to output, and I wonder how the L86 will position itself compared to the Vette's LT1??????????

peace
Hog

Last edited by hog; 04-04-2013 at 04:28 PM.
Old 04-04-2013, 03:57 PM
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Originally Posted by hog
The 2014 GEN 5 L83 5.3 has the same torque rating as the 2007-2009 L76 in the GMT900 trucks at 383 lb/ft.

1.18 lb/ft torque per cube, that beats the LS7 at 1.1 lb/ft per cube. So if the L86 follows suit, being 376 cubes, the L86 should have around 444 lb/ft of torque. The L86 is supposed to out torque the LS7 under 4000rpm. The LS& outputs approx. 440 lb/ft at 4000rpm, so this starts to make sense.

The L83 5.3 makes 355 Certifed hp, thats 1.09 per cube, so the 376 cube L86 should make around 410 certified hp.
GEN 5 L86 extrapolates out to 410hp/440 lb/ft from 376cubes(6.2 liters) engine, hmm.
The GEN 4 Cadillac L94 6.2 was rated at 403hp@5700rpm/417@4300rpm

I'm interested to see what the L86 6.2 is going to output, and I wonder how the L86 will position itself compared to the Vette's LT1??????????

peace
Hog
Nice extrapolation (or is it interpolation?)


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