Z28x

2014 Chevy Silverado priced from *$24,585, V8 gets better economy than Ford EcoBoost V6

Impressive numbers, great mix of power and economy.

colin911

Nice engine, hideous truck!

AdioSS

Makes me think the 4.3L should get really close to 300hp & tq. And the 6.2 is going to be a beast.

King Moose SS

The question now is, will GM allow people to order the 5.3l on a regular cab short bed. Or will they be like Ford and not allow people to opt for that combo. (Eco boost on regular cab short bed)

HuJass

Is that really a big deal?
Isn't the 3.6 HF V-6 already doing that (not sure of tq)?

ImportedRoomate

It is a big deal. The 3.6 only makes about 270tq which is similar to the other car based V6s used by Ford and Ram. The new 4.3 should make really good torque which will put it at a completely different level compared to the competition. It will most likely have similar output to the current 5.3.

91Z-28

The real question is what will the 6.2 make?

Loved my L9H Silverado. The old 5.3 was a dog in a 5400lb truck. My '11 6.2 CC was a better truck than my '09 EC in every conceivable way.

If this new 6.2 makes 450hp I'm sold.

AdioSS

the 5.3L has never been a "dog" after any aftermarket tune My 05 can spin the tires with only 3.23 gears.

I strongly doubt that the truck 6.2 will make the same power as the Corvette 6.2

30thZ286speed

The new 5.3 is impressive, the bad news is its going to be compared to Dodge's Hemi and Ford's 5.0 both are more powerful. Chevy use to always be on top in power when a new truck debuted, across all powertrains.

It will be interesting to see what the 4.3 gets rated. Being based on the newest SBC it should be torque heavy in output.

bossco

Is the new 5.3 DI or port injected? I'm guessing DI

ImportedRoomate

The new engines are DI which is one feature from the EcoTec3 package (I still wish they would have kept Vortec and put some spin on it)

1. Direct Injection
2. Cylinder Deactivation
3. Variable Valve Timing

Z28x

I thought I read that every engine would be available with every cab/bed combo. I know the crew cab trucks are getting the new V6 this time around.

In HP yes, but not is torque. The 4.3L will have more torque at low RPMs too.

I don't think it will be 450HP, but I do think it will be more than Ford's 6.2L. My guess would be 420HP but with better fuel economy than Ford.

The new 5.3L has 5 less HP, but 5 more torque than the Ford 5.0L so I'd say that is a wash, except that the GM engine gets 3 more mpg than the 5.0L wish is big. If GM only wanted 19mpg then I'm sure they could have gotten over 400HP from the 5.3L. The 6.2L is there for people that need more power, and that engine will top both Ford's and Dodge's. I'd still say GM is tops thanks to those impressive mileage numbers.

91Z-28

If the 5.3 is jumping from 315 to 355 with the addition of DI you'd think the 6.2 would have a bigger jump then 403 to 420.

Z28x

I was going by HP per liter. I also think the old 5.3L should have been able to put out more power, GM had it tuned conservatively compared to all their other V8's

We will have to see what the Corvettes official HP numbers are. That should give us some clues. The last 6.2L was ~30hp more than the trucks 6.2L.

470HP Corvette, 440HP Silverado

ImportedRoomate

Sounds good to me.

I also think the 5.3 was conservative for efficiency reasons, while the 6.2 was tuned more towards higher output. Also keep in mind that the 6.2 has AFM meaning it is probably closer in design to the 400hp L99. Now that GM has figured out how to get good power with AFM we should also see a pretty good power increase from the new 6.2.