2014 Chevy/GMC specs

[Hay Dude]

Number built has nothing to do with quality!

Don't get me wrong, I like the 7.3, but it is flat out a dog down low in the revs compared to the 5.9. Plus the ridiculous HEUI system just adds unneeded complication to the engine.

Hauled this load last weekend with this 7.3. Wished it had my 5.9 in it every time I tried to climb a hill or get moving.

What you can do is when your 7.3l dies is replace it with a 5.9l there's a couple guys out there that do the conversions for guys like you and me who realize the ford Superduty is a good chassis with a below average power plant.
fordcummins.com - Increase Horsepower with Ford Cummins Diesel conversion kits

 

[NICKB304]

i am also not that impressed with the 7.3. There are alot of high mile trucks out there but our 99 f550 at work has not exaclty been trouble free and it feels gutless even with the super low rear end in the 550. The duramax GMC topkick we had would run circles around it even being a bigger truck. Its too bad it ate injectors on a yearly basis and the interior was crumbling apart. i think the f550 has had a couple injectors and a nagging problem where it looses power at about 1500rmp and sounds like its blowing air off but our backwoods mechanic says it normal?

 

[aczlan]

i am also not that impressed with the 7.3. There are alot of high mile trucks out there but our 99 f550 at work has not exaclty been trouble free and it feels gutless even with the super low rear end in the 550. The duramax GMC topkick we had would run circles around it even being a bigger truck. Its too bad it ate injectors on a yearly basis and the interior was crumbling apart. i think the f550 has had a couple injectors and a nagging problem where it looses power at about 1500rmp and sounds like its blowing air off but our backwoods mechanic says it normal?

Sounds like the turbo wastegate (essentially a pressure relief valve) or something else in the pressurized side of the intake system is opening up and dumping boost. This would cause gutlessness and other driveability issues. How much boost is it making before this happens?
See 99' 7.3PSD Turbo/Wastegate Blowing Off Early when under-load or in high boost???? - Diesel Forum - TheDieselStop.com for someone's story with a similar issue.

Aaron Z

 

[jejeosborne]

Here are the specs for the 4.3 liter.

http://www.autoblog.com/2013/05/06/2014-gmc-sierra-4-3l-v6-to-offer-segment-best-305-lb-ft/

Not sure what the MPGS are yet. Not as impressive as I thought it would be with more than a half a liter more than the competition they are comparing it to.

 

[Peacock]

Here are the specs for the 4.3 liter.

2014 GMC Sierra 4.3L V6 to offer segment-best 305 LB-FT

Not sure what the MPGS are yet. Not as impressive as I thought it would be with more than a half a liter more than the competition they are comparing it to.

The torque curve is gonna blow away the others.

This is a truck engine from the ground up. Not a car engine made to work in a truck.

 

[RollingsFarms]

Here are the specs for the 4.3 liter.

http://www.autoblog.com/2013/05/06/2014-gmc-sierra-4-3l-v6-to-offer-segment-best-305-lb-ft/

Not sure what the MPGS are yet. Not as impressive as I thought it would be with more than a half a liter more than the competition they are comparing it to.

I thought this was supposed to be the Ecoboost fighter.

 

[Peacock]

I thought this was supposed to be the Ecoboost fighter.

No. The 4.3 is just the base engine.

 

[crazyal]

In 1960, GMC debuted the first V-6 pickup truck ever and offered it exclusively through most of the '60s.

That engine, offered in various displacements starting at 5.0L, was designed with aluminum pistons, improved cooling and a stout crankshaft and bearings designed for unprecedented durability.

If it was so "robust" them why did GM introduce a 4 bolt main cap?

Like the 2014 engine, the 4.3L V-6 introduced as standard equipment for GMC half-ton pickups in 1985 used geometry and engineering from the brand's proven Small Block V-8.

So they redesigned the heads because of the direct injection but basically it's the same block. I said it before and I'll say it again. I have to believe that GM's bankruptcy has left them with limited funds to develop all new engines. I think they did well but I wonder how much more they could have done.

 

[RollingsFarms]

Update for you guys (and gals, if you're following this thread)

First Drive: 2014 Chevrolet Silverado 1500 - PickupTrucks.com News

 

[Peacock]

I have no idea why they compare this to the old engines. It isn't related to the old 4.3 in any way, let alone the old medium duty V6 GMC engines.